PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
STEREO AUDIO CODEC WITH USB INTERFACE,
SINGLE-ENDED ANALOG INPUT/OUTPUT AND S/PDIF
FEATURES
D
PCM2901: Without S/PDIF
D
PCM2903: With S/PDIF
D
On-Chip USB Interface:
With Full-Speed Transceivers
Fully Compliant With USB 1.1
Specification
Certified by USB-IF
Partially Programmable Descriptors
(1)
USB Adaptive Mode for Playback
USB Asynchronous Mode for Record
Self Powered
D
16-Bit Delta Sigma ADC and DAC
D
Sampling Rate:
DAC: 32, 44.1, 48 kHz
ADC: 8, 11.025, 16, 22.05, 32, 44.1, 48 kHz
D
On-Chip Clock Generator:
With Single 12-MHz Clock Source
D
Single Power Supply: 3.3 V TYP
D
Stereo ADC Analog Performance at
V
CCC
= V
CCP1
= V
CCP2
= V
CCX
= V
DD
= 3.3 V:
THD+N = 0.01%
SNR = 89 dB
Dynamic Range = 89 dB
Decimation Digital Filter
Passband Ripple =
0.05 dB
Stopband Attenuation = 65 dB
Single-Ended Voltage Input
Antialiasing Filter Included
Digital LCF Included
D
Stereo DAC Analog Performance at
V
CCC
= V
CCP1
= V
CCP2
= V
CCX
= V
DD
= 3.3 V:
THD+N = 0.005%
SNR = 96 dB
Dynamic Range = 93 dB
Oversampling Digital Filter
Passband Ripple =
0.1 dB
Stopband Attenuation = 43 dB
Single-Ended Voltage Output
Analog LPF Included
D
Multifunctions:
HID Volume
Control and Mute Control
Suspend Flag
D
Package: 28-Pin SSOP, Lead-Free Product
APPLICATIONS
D
USB Audio Speaker
D
USB Headset
D
USB Monitor
D
USB Audio Interface Box
DESCRIPTION
The PCM2901/2903 is Texas Instruments single-chip
USB stereo audio codec with USB 1.1 compliant
full-speed protocol controller and S/PDIF (only
PCM2903). The USB protocol controller works with no
software code, but the USB descriptors can be modified
in some areas (ex. vendor ID/product ID). The
PCM2901/2903 employs a USB data tracking system
named sampling period adaptive controlled tracking
(SpAct), which is TI's audio clock recovery architecture.
The on-chip analog PLLs with the SpAct enables
independent playback and record sampling rates with
low clock jitters.
Clocked by SpAct
Input signal is reclocked with the patented sampling
period adaptive controlled tracking system for
maximum quality.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments
semiconductor products and disclaimers thereto appears at the end of this data sheet.
www.ti.com
Copyright
2002, Texas Instruments Incorporated
(1)The descriptor can be modified by changing a mask.
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
www.ti.com
2
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate
precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
PACKAGING ORDERING INFORMATION
PCM2901
PRODUCT
PACKAGELEAD
PACKAGE
DESIGNATOR
SPECIFIED
TEMPERATURE
RANGE
PACKAGE
MARKING
ORDERING
NUMBER(1)
TRANSPORT
MEDIA
PCM2901E
SSOP 28
28DB
25
C to 85
C
PCM2901E
PCM2901E
Rails
PCM2901E
SSOP-28
28DB
25
C to 85
C
PCM2901E
PCM2901E/2K
Tape and reel
(1) Models with a slash (/) are available only in tape and reel in the quantities indicated (e.g., /2K indicates 2000 devices per reel). Ordering 2000
pieces of PCM2901E/2K gets a single 2000 piece tape and reel.
PCM2903
PRODUCT
PACKAGELEAD
PACKAGE
DESIGNATOR
SPECIFIED
TEMPERATURE
RANGE
PACKAGE
MARKING
ORDERING
NUMBER(2)
TRANSPORT
MEDIA
PCM2903E
SSOP 28
28DB
25
C to 85
C
PCM2903E
PCM2903E
Rails
PCM2903E
SSOP-28
28DB
25
C to 85
C
PCM2903E
PCM2903E/2K
Tape and reel
(2) Models with a slash (/) are available only in tape and reel in the quantities indicated (e.g., /2K indicates 2000 devices per reel). Ordering 2000
pieces of PCM2903E/2K gets a single 2000 piece tape and reel.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range unless otherwise noted(1)
PCM2901/PCM2903
UNIT
Supply voltage, VCCC, VCCP1, VCCP2, VCCX, VDD
4.0
V
Supply voltage differences, VCCC, VCCP1, VCCP2, VCCX, VDD
0.1
V
Ground voltage differences, AGNDC, AGNDP, AGNDX, DGND, DGNDU
0.1
V
Digital input voltage
SEL0, SEL1, DIN
0.3 to 6.5
V
Digital input voltage
D+, D, HID0, HID1, HID2, XTI, XTO, DOUT, SSPND
0.3 to (VDD + 0.3)
V
Analog input voltage
VINL, VINR, VCOM, VOUTR, VOUTL
0.3 to (VCCC + 0.3)
V
Input current (any pins except supplies)
10
mA
Ambient temperature under bias
40 to 125
C
Storage temperature, Tstg
55 to 150
C
Junction temperature TJ
150
C
Lead temperature (soldering)
260
C, 5 s
Package temperature (IR reflow, peak)
260
C
(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
www.ti.com
3
ELECTRICAL CHARACTERISTICS
all specifications at TA = 25
C, VCCC, VCCP1, VCCP2, VCCX, VDD = 3.3 V, fS = 44.1 kHz, fIN = 1 kHz, 16-bit data, unless otherwise noted
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Digital Input/Output
Host interface
Apply USB Revision 1.1,
full speed
Audio data format
USB isochronous data format
Input Logic
D+, D
2
VDD
VIH
High level input voltage
XTI, HID0, HID1, and HID2
0.7V
DD
VDD
VDC
VIH
High-level input voltage
SEL0, SEL1
2
5.25
VDC
DIN, PCM2903
0.7V
DD
5.25
D+, D
VDD
0.8
VIL
Low level input voltage
XTI, HID0, HID1, and HID2
0.3V
DD
VDC
VIL
Low-level input voltage
SEL0, SEL1
0.8
VDC
DIN, PCM2903
0.3V
DD
D+, D, XTI, SEL0, SEL1
VIN = 3.3 V
10
IIH
High-level input current
HID0, HID1, and HID2
VIN = 3.3 V
50
80
A
IIH
High level in ut current
DIN, PCM2903
VIN = 3.3 V
65
100
A
D+, D, XTI, SEL0, SEL1
VIN = 0 V
10
IIL
Low-level input current
HID0, HID1, and HID2
VIN = 0 V
10
A
IIL
Low level in ut current
DIN, PCM2903
VIN = 0 V
10
A
Output Logic
D+, D
2.8
VOH
High-level output voltage
DOUT, PCM2903
IOH = 4 mA
2.8
VDC
VOH
High level out ut voltage
SSPND
IOH = 2 mA
2.8
VDC
D+, D
0.3
VOL
Low-level output voltage
DOUT, PCM2903
IOL = 4 mA
0.5
VDC
VOL
Low level out ut voltage
SSPND
IOL = 2 mA
0.5
VDC
Clock Frequency
Input clock frequency, XTI
11.99
4
12
12.0
06
MHz
ADC Characteristics
Resolution
8, 16
bits
Audio data channel
1, 2
channel
PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
www.ti.com
4
ELECTRICAL CHARACTERISTICS
all specifications at TA = 25
C, VCCC, VCCP1, VCCP2, VCCX, VDD = 3.3 V, fS = 44.1 kHz, fIN = 1 kHz, 16-bit data, unless otherwise noted
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Clock Frequency
fS
Sampling frequency
8, 11.025, 16, 22.05, 32, 44.1, 48
kHz
DC Accuracy
Gain mismatch channel-to-channel
1
5
%FSR
Gain error
2
10
%FSR
Bipolar zero error
0
%FSR
Dynamic Performance(1)
THD+N
Total harmonic distortion plus noise
VIN = 0.5 dB
0.01%
0.02%
THD+N
Total harmonic distortion plus noise
VIN = 60 dB
5%
Dynamic range
A-Weighted
81
89
dB
SNR
Signal-to-noise ratio
A-Weighted
81
89
dB
Channel separation
80
85
dB
Analog Input
Input voltage
0.6
VCCC
Vpp
Center voltage
0.5
VCCC
V
Input impedance
30
k
Antialiasing filter frequency response
3 dB
150
kHz
Antialiasing filter frequency response
fIN = 20 kHz
0.08
dB
Digital Filter Performance
Passband
0.454 fS
Hz
Stopband
0.583 fS
Hz
Passband ripple
0.05
dB
Stopband attenuation
65
dB
td
Delay time
17.4/fS
s
LCF frequency response
3 dB
0.078fS
MHz
DAC Characteristics
Resolution
8, 16
bits
Audio data channel
1, 2
channel
Clock Frequency
fS
Sampling frequency
32, 44.1, 48
kHz
(1) fIN = 1 kHz, using Audio Precision System II, RMS mode with 20-kHz LPF, 400-Hz HPF in calculation.
PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
www.ti.com
5
ELECTRICAL CHARACTERISTICS
all specifications at TA = 25
C, VCCC, VCCP1, VCCP2, VCCX, VDD = 3.3 V, fS = 44.1 kHz, fIN = 1 kHz, 16-bit data, unless otherwise noted
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
DC Accuracy
Gain mismatch channel-to-channel
1
5
%FSR
Gain error
2
10
%FSR
Bipolar zero error
2
%FSR
Dynamic Performance(1)
THD+N
Total harmonic distortion plus noise
VOUT = 0 dB
0.005%
0.016%
THD+N
Total harmonic distortion plus noise
VOUT = 60 dB
3%
Dynamic range
EIAJ, A-weighted
87
93
dB
SNR
Signal-to-noise ratio
EIAJ, A-weighted
90
96
dB
Channel separation
86
92
dB
Analog Output
VO
Output voltage
0.6
VCCC
Vpp
Center voltage
0.5
VCCC
V
Load impedance
AC coupling
10
k
LPF frequency response
3 dB
250
kHz
LPF frequency response
f = 20 kHz
0.03
dB
Digital filter performance
Passband
0.445 fS
Hz
Stopband
0.555 fS
Hz
Passband ripple
0.1
dB
Stopband attenuation
43
dB
td
Delay time
14.3 fS
s
Power Supply Requirements
Voltage range (VDD, VCCC, VCCP1, VCCP2, VCCX)
3
3.3
3.6
VDC
Supply current
ADC, DAC operation
54
70
mA
Supply current
Suspend mode(2)
210
A
PD
Power dissipation
ADC, DAC operation
178
252
mW
PD
Power dissipation
Suspend mode(2)
0.69
mW
Temperature Range
Operation temperature
25
85
_
C
JA
Thermal resistance
28-pin SSOP
100
C/W
(1) fOUT = 1 kHz, using Audio Precision System II, RMS mode with 20-kHz LPF, 400-Hz HPF.
(2) Under USB suspend state
PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
www.ti.com
6
PIN ASSIGNMENTS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
D+
D
V
BUS
DGNDU
HID0
HID1
HID2
SEL0
SEL1
V
CCC
AGNDC
V
IN
L
V
IN
R
V
COM
SSPND
V
DD
DGND
DOUT
DIN
V
CCX
AGNDX
XTI
XTO
V
CCP2
AGNDP
V
CCP1
V
OUT
L
V
OUT
R
PCM2903
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
D+
D
V
BUS
DGNDU
HID0
HID1
HID2
SEL0
SEL1
V
CCC
AGNDC
V
IN
L
V
IN
R
V
COM
SSPND
V
DD
DGND
TEST1
TEST0
V
CCX
AGNDX
XTI
XTO
V
CCP2
AGNDP
V
CCP1
V
OUT
L
V
OUT
R
PCM2901
(TOP VIEW)
PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
www.ti.com
7
PCM2901 Terminal Functions
TERMINAL
I/O
DESCRIPTION
NAME
NO.
I/O
DESCRIPTION
AGNDC
11
Analog ground for codec
AGNDP
18
Analog ground for PLL
AGNDX
22
Analog ground for oscillator
D
2
I/O
USB differential input/output minus(1)
D+
1
I/O
USB differential input/output plus(1)
DGND
26
Digital ground
DGNDU
4
Digital ground for USB transceiver
HID0
5
I
HID key state input (mute), active high(3)
HID1
6
I
HID key state input (volume up), active high(3)
HID2
7
I
HID key state input (volume down), active high(3)
SEL0
8
I
Must be set to high(5)
SEL1
9
I
Connected to the USB port of VBUS(5)
SSPND
28
O
Suspend flag, active low (Low: suspend, High: operational)
TEST0
24
I
Test pin, must be connected to GND
TEST1
25
O
Test pin, must be left open
VBUS
3
I
Must be connected to VDD
VCCC
10
Analog power supply for codec(4)
VCCP1
17
Analog power supply for PLL(4)
VCCP2
19
Analog power supply for PLL(4)
VCCX
23
Analog power supply for oscillator(4)
VCOM
14
Common for ADC/DAC (VCCCI/2) (4)
VDD
27
Digital power supply(4)
VINL
12
I
ADC analog input for L-channel
VINR
13
I
ADC analog input for R-channel
VOUTL
16
O
DAC analog output for L-channel
VOUTR
15
O
DAC analog output for R-channel
XTI
21
I
Crystal oscillator input(2)
XTO
20
O
Crystal oscillator output
(1) LV-TTL level
(2) 3.3-V CMOS level input
(3) 3.3-V CMOS level input with internal pulldown. This pin informs the PC of serviceable control signals such as mute, volume up, or volume down,
which has no connection with the internal DAC or ADC directly. See the volume control and mute control section.
(4) Connect a decouple capacitor to GND
(5) TTL Schmitt trigger, 5 V tolerant
PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
www.ti.com
8
PCM2903 Terminal Functions
TERMINAL
I/O
DESCRIPTIONS
NAME
PIN
I/O
DESCRIPTIONS
AGNDC
11
Analog ground for codec
AGNDP
18
Analog ground for PLL
AGNDX
22
Analog ground for oscillator
D
2
I/O
USB differential input/output minus(1)
D+
1
I/O
USB differential input/output plus(1)
DGND
26
Digital ground
DGNDU
4
Digital ground for USB transceiver
DIN
24
I
S/PDIF input(5)
DOUT
25
O
S/PDIF output
HID0
5
I
HID key state input (mute), active high(3)
HID1
6
I
HID key state input (volume up), active high(3)
HID2
7
I
HID key state input (volume down), active high(3)
SEL0
8
I
Must be set to high(6)
SEL1
9
I
Connected to the USB port of VBUS(6)
SSPND
28
O
Suspend flag, active low (Low: suspend, High: operational)
VBUS
3
I
Must be connected to VDD
VCCC
10
Analog power supply for codec(4)
VCCP1
17
Analog power supply for PLL(4)
VCCP2
19
Analog power supply for PLL(4)
VCCX
23
Analog power supply for oscillator(4)
VCOM
14
Common for ADC/DAC (VCCCI/2) (4)
VDD
27
Digital power supply(4)
VINL
12
I
ADC analog input for L-channel
VINR
13
I
ADC analog input for R-channel
VOUTL
16
O
DAC analog output for L-channel
VOUTR
15
O
DAC Analog output for R-channel
XTI
21
I
Crystal oscillator input(2)
XTO
20
O
Crystal oscillator output
(1) LV-TTL level
(2) 3.3-V CMOS level input
(3) 3.3-V CMOS level input with internal pulldown. This pin informs the PC of serviceable control signals such as mute, volume up, or volume down,
which has no connection with the internal DAC or ADC directly. See the volume control and mute control section.
(4) Connect a decouple capacitor to GND
(5) 3.3-V CMOS level input with internal pulldown, 5 V tolerant
(6) TTL Schmitt trigger, 5 V tolerant
PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
www.ti.com
9
PCM2901 FUNCTIONAL BLOCK DIAGRAM
SSPND
VCCC VCCP1 VCCP2 VCCX
VDD
DGNDU
DGND
AGNDX
AGNDP
AGNDC
TEST1
ADC
VINL
VINR
VCOM
FIFO
Selector
Analog
PLL
Analog
PLL
FIFO
DAC
VOUTL
VOUTR
XTI
XTO
12 MHz
PLL (x8)
96 MHz
Tracker
(SpAct)
USB
Protocol
Controller
Power
Manager
ISO-In
Endpoint
Control
Endpoint
ISO-Out
Endpoint
HID
Endpoint
VBUS
USB SIE
D+
D
XCVR
SEL0
SEL1
HID0
HID1
HID2
TEST0
PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
www.ti.com
10
PCM2903 FUNCTIONAL BLOCK DIAGRAM
SSPND
VCCC VCCP1 VCCP2 VCCX
VDD
DGNDU
DGND
AGNDX
AGNDP
AGNDC
S/PDIF Decoder
DIN
Lock
ADC
VINL
VINR
VCOM
FIFO
Selector
Analog
PLL
Analog
PLL
FIFO
DAC
VOUTL
VOUTR
S/PDIF Encoder
DOUT
XTI
XTO
12 MHz
PLL (x8)
96 MHz
Tracker
(SpAct)
USB
Protocol
Controller
Power
Manager
ISO-In
Endpoint
Control
Endpoint
ISO-Out
Endpoint
HID
Endpoint
VBUS
USB SIE
D+
D
XCVR
SEL0
SEL1
HID0
HID1
HID2
PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
www.ti.com
11
PCM2901/2903 BLOCK DIAGRAM OF ANALOG FRONT-END (RIGHT CHANNEL)
VINR
13
14
VCOM
10
F
+
+
4.7
F
30 k
+
+
Delta-Sigma
Modulator
(+)
()
Reference
(VCCC/2)
PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
www.ti.com
12
TYPICAL CHARACTERISTICS
ADC
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.10
50
25
0
25
50
75
100
TA Free-Air Temperature
C
THD+N
T
otal Harmonic Distortion + Noise
%
TOTAL HARMONIC DISTORTION + NOISE at 0.5 dB
vs
FREE-AIR TEMPERATURE
0.010
0.009
0.004
0.003
0.005
0.008
0.007
0.006
Figure 1
85
87
89
91
93
95
50
25
0
25
50
75
100
TA Free-Air Temperature
C
Dynamic Range and SNR
dB
DYNAMIC RANGE and SNR
vs
FREE-AIR TEMPERATURE
SNR
Dynamic Range
Figure 2
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.10
2.8
3.0
3.2
3.4
3.6
3.8
VCC Supply Voltage V
THD+N
T
otal Harmonic Distortion + Noise
%
TOTAL HARMONIC DISTORTION + NOISE at 0.5 dB
vs
SUPPLY VOLTAGE
0.010
0.009
0.004
0.003
0.005
0.008
0.007
0.006
Figure 3
85
87
89
91
93
95
2.8
3.0
3.2
3.4
3.6
3.8
VCC Supply Voltage V
Dynamic Range and SNR
dB
DYNAMIC RANGE and SNR
vs
SUPPLY VOLTAGE
SNR
Dynamic Range
Figure 4
All specifications at TA = 25
C, VDD = VCCC = VCCP1= VCCP2 = VCCx = 3.3 V, fs = 44.1 kHz, fIN = 1 kHz, 16-bit data, unless otherwise noted.
PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
www.ti.com
13
ADC (CONTINUED)
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.10
30
35
40
45
50
fS Sampling Frequency kHz
THD+N
T
otal Harmonic Distortion + Noise
%
TOTAL HARMONIC DISTORTION + NOISE at 0.5 dB
vs
SAMPLING FREQUENCY
0.010
0.009
0.004
0.003
0.005
0.008
0.007
0.006
Figure 5
85
87
89
91
93
95
30
35
40
45
50
fS Sampling Frequency kHz
Dynamic Range and SNR
dB
DYNAMIC RANGE and SNR
vs
SAMPLING FREQUENCY
SNR
Dynamic Range
Figure 6
DAC
0.03
0.04
0.05
0.06
0.07
0.08
50
25
0
25
50
75
100
TA Free-Air Temperature
C
THD+N
T
otal Harmonic Distortion + Noise
%
TOTAL HARMONIC DISTORTION + NOISE at 0 dB
vs
FREE-AIR TEMPERATURE
0.008
0.004
0.003
0.005
0.007
0.006
Figure 7
90
91
92
93
94
95
96
97
98
50
25
0
25
50
75
100
TA Free-Air Temperature
C
Dynamic Range and SNR
dB
DYNAMIC RANGE and SNR
vs
FREE-AIR TEMPERATURE
SNR
Dynamic Range
Figure 8
All specifications at TA = 25
C, VDD = VCCC = VCCP1= VCCP2 = VCCx = 3.3 V, fs = 44.1 kHz, fIN = 1 kHz, 16-bit data, unless otherwise noted.
PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
www.ti.com
14
DAC (CONTINUED)
0.03
0.04
0.05
0.06
0.07
0.08
3.0
3.1
3.2
3.3
3.4
3.5
3.6
VCC Supply Voltage V
THD+N
T
otal Harmonic Distortion + Noise
%
TOTAL HARMONIC DISTORTION + NOISE at 0 dB
vs
SUPPLY VOLTAGE
0.008
0.004
0.003
0.005
0.007
0.006
Figure 9
90
91
92
93
94
95
96
97
98
3.0
3.1
3.2
3.3
3.4
3.5
3.6
VCC Supply Voltage V
Dynamic Range and SNR
dB
DYNAMIC RANGE and SNR
vs
SUPPLY VOLTAGE
SNR
Dynamic Range
Figure 10
0.03
0.04
0.05
0.06
0.07
0.08
30
35
40
45
50
fS Sampling Frequency kHz
THD+N
T
otal Harmonic Distortion + Noise
%
TOTAL HARMONIC DISTORTION + NOISE at 0 dB
vs
SAMPLING FREQUENCY
0.008
0.004
0.003
0.005
0.007
0.006
Figure 11
90
91
92
93
94
95
96
97
98
30
35
40
45
50
fS Sampling Frequency kHz
Dynamic Range and SNR
dB
DYNAMIC RANGE and SNR
vs
SAMPLING FREQUENCY
SNR
Dynamic Range
Figure 12
All specifications at TA = 25
C, VDD = VCCC = VCCP1= VCCP2 = VCCx = 3.3 V, fs = 44.1 kHz, fIN = 1 kHz, 16-bit data, unless otherwise noted.
PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
www.ti.com
15
ADC OUTPUT SPECTRUM
f Frequency kHz
140
120
100
80
60
40
20
0
0
5
10
15
20
Amplitude
dB
OUTPUT SPECTRUM (0.5 dB, N = 8192)
Figure 13
f Frequency kHz
140
120
100
80
60
40
20
0
0
5
10
15
20
Amplitude
dB
OUTPUT SPECTRUM (60 dB, N = 8192)
Figure 14
DAC OUTPUT SPECTRUM
f Frequency kHz
140
120
100
80
60
40
20
0
0
5
10
15
20
Amplitude
dB
OUTPUT SPECTRUM (0.5 dB, N = 8192)
Figure 15
f Frequency kHz
140
120
100
80
60
40
20
0
0
5
10
15
20
Amplitude
dB
OUTPUT SPECTRUM (60 dB, N = 8192)
Figure 16
All specifications at TA = 25
C, VDD = VCCC = VCCP1= VCCP2 = VCCx = 3.3 V, fs = 44.1 kHz, fIN = 1 kHz, 16-bit data, unless otherwise noted.
PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
www.ti.com
16
SUPPLY CURRENT
I CC
Suspend Supply Current
mA
0
10
20
30
40
50
60
70
80
3.0
3.1
3.2
3.3
3.4
3.5
3.6
VDD, VCCC, VCCP1, VCCP2, VCCX Supply Voltage V
I CC
Operational Supply Current
mA
OPERATIONAL and SUSPEND
SUPPLY CURRENT
vs
SUPPLY VOLTAGE
Operational
Suspend
1.6
1.2
0.2
0.0
0.4
1.0
0.8
0.6
1.4
Figure 17
0
10
20
30
40
50
60
70
80
30
35
40
45
50
fS Sampling Frequency kHz
I CC
Operational Supply Current
mA
OPERATIONAL SUPPLY CURRENT
vs
SAMPLING FREQUENCY
Figure 18
ADC and DAC
All specifications at TA = 25
C, VDD = VCCC = VCCP1= VCCP2 = VCCx = 3.3 V, fs = 44.1 kHz, fIN = 1 kHz, 16-bit data, unless otherwise noted.
PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
www.ti.com
17
ADC DIGITAL DECIMATION FILTER FREQUENCY RESPONSE
Amplitude
dB
OVERALL CHARACTERISTIC
160
140
120
100
80
60
40
20
0
0
8
16
24
32
Frequency [x fS]
Figure 19
Frequency [x fS]
100
90
80
70
60
50
40
30
20
10
0
0.0
0.2
0.4
0.6
0.8
1.0
Amplitude
dB
STOPBAND ATTENUATION
Figure 20
Figure 21
Frequency [x fS]
0.8
0.6
0.4
0.2
0.0
0.2
0.0
0.1
0.2
0.3
0.4
0.5
Amplitude
dB
PASSBAND RIPPLE
0.0
Figure 22
Frequency [x fS]
20
16
12
8
4
0
0.46
0.48
0.50
0.52
0.54
Amplitude
dB
TRANSIENT BAND RESPONSE
All specifications at TA = 25
C, VDD = VCCC = VCCP1= VCCP2 = VCCx = 3.3 V, fs = 44.1 kHz, fIN = 1 kHz, 16-bit data, unless otherwise noted.
PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
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18
ADC DIGITAL HIGH PASS FILTER FREQUENCY RESPONSE
Figure 23
Frequency [x fS/1000]
100
90
80
70
60
50
40
30
20
10
0
0.0
0.1
0.2
0.3
0.4
Amplitude
dB
STOPBAND CHARACTERISTIC
Figure 24
Frequency [x fS/1000]
1.0
0.8
0.6
0.4
0.2
0.0
0
1
2
3
4
Amplitude
dB
0.0
PASSBAND CHARACTERISTIC
ADC ANALOG ANTIALIASING FILTER FREQUENCY RESPONSE
Figure 25
50
40
30
20
10
0
f Frequency kHz
Amplitude
dB
STOPBAND CHARACTERISTIC
1
100
1k
10k
10
Figure 26
1.0
0.8
0.6
0.4
0.2
0.0
f Frequency kHz
Amplitude
dB
PASSBAND CHARACTERISTIC
0.01
1
10
100
0.1
0.0
All specifications at TA = 25
C, VDD = VCCC = VCCP1= VCCP2 = VCCx = 3.3 V, fs = 44.1 kHz, fIN = 1 kHz, 16-bit data, unless otherwise noted.
PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
www.ti.com
19
DAC DIGITAL INTERPOLATION FILTER FREQUENCY RESPONSE
Figure 27
Frequency [x fS]
100
90
80
70
60
50
40
30
20
10
0
0
1
2
3
4
Amplitude
dB
STOPBAND ATTENUATION
Figure 28
Frequency [x fS]
0.8
0.6
0.4
0.2
0.0
0.2
0.0
0.1
0.2
0.3
0.4
0.5
Amplitude
dB
PASSBAND RIPPLE
0.0
Frequency [x fS]
20
18
16
14
12
10
8
6
4
2
0
0.46
0.47
0.48
0.49
0.50
0.51
0.52
0.53
0.54
Amplitude
dB
TRANSIENT BAND RESPONSE
Figure 29
All specifications at TA = 25
C, VDD = VCCC = VCCP1= VCCP2 = VCCx = 3.3 V, fs = 44.1 kHz, fIN = 1 kHz, 16-bit data, unless otherwise noted.
PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
www.ti.com
20
DAC ANALOG FIR FILTER FREQUENCY RESPONSE
Figure 30
50
40
30
20
10
0
0
8
16
24
32
Frequency [x fS]
Amplitude
dB
STOPBAND CHARACTERISTIC
Figure 31
0.8
0.6
0.4
0.2
0.0
0.2
0.0
0.1
0.2
0.3
0.4
0.5
Frequency [x fS]
Amplitude
dB
PASSBAND CHARACTERISTIC
0.0
DAC ANALOG LOW PASS FILTER FREQUENCY RESPONSE
Figure 32
50
40
30
20
10
0
f Frequency kHz
Amplitude
dB
STOPPBAND CHARACTERISTIC
1
100
1k
10k
10
Figure 33
1.0
0.8
0.6
0.4
0.2
0.0
f Frequency kHz
Amplitude
dB
PASSBAND CHARACTERISTIC
0.01
1
10
100
0.1
0.0
All specifications at TA = 25
C, VDD = VCCC = VCCP1= VCCP2 = VCCx = 3.3 V, fs = 44.1 kHz, fIN = 1 kHz, 16-bit data, unless otherwise noted.
PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
www.ti.com
21
USB INTERFACE
Control data and audio data are transferred to the PCM2901/2903 via D+ (pin 1) and D (pin 2). All data to/from
the PCM2901/2903 is performed in full speed. The device descriptor can be modified upon request, contact
a Texas Instruments representative for details (see Table 1).
Table 1. Device Descriptor
USB revision
1.1 compliant
Device class
0x00 (device defined interface level)
Device sub class
0x00 (not specified)
Device protocol
0x00 (not specified)
Max packet size for endpoint 0
8 byte
Vendor ID
0x08BB (default value, can be modified)
Product ID
0x2901 / 0x2903 (default value, can be modified)
Device release number
1.0 (0x0100)
Number of configurations
1
Vendor strings
String #1 (see Table 3)
Product strings
String #2 (see Table 3)
Serial number
Not supported
The configuration descriptor can be modified upon request, contact your representative for details (see
Table 2).
Table 2. Configuration Descriptor
Interface
Four interfaces
Power attribute
0xC0 (Self powered, no remote wakeup)
Max power
0x00 (0 mA. Default value, can be modified)
The string descriptor can be modified upon request, contact a Texas Instruments representative for details (see
Table 3).
Table 3. String Descriptor
#0
0x0409
#1
Burr-Brown from TI (default value, can be modified)
#2
USB audio codec (default value, can be modified)
PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
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22
DEVICE CONFIGURATION
Figure 34 illustrates the USB audio function topology. The PCM2901/2903 has four interfaces. Each interface
is constructed by alternative settings.
Analog Out
Analog In
Default
Endpoint
Endpoint #2
(IF #1)
Audio Streaming
Interface
Endpoint #0
Endpoint #4
(IF #2)
Audio Streaming
Interface
Endpoint #5
(IF #3)
HID Interface
IT
TID1
FU
UID3
OT
TID5
OT
TID2
IT
TID4
Standard Audio Control Interface (IF #0)
PCM2903
Figure 34. USB Audio Function Topology
PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
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23
Interface #0
Interface #0 is for the control interface. Alternative setting #0 is the only possible setting for interface #0.
Alternative setting #0 describes the standard audio control interface. A terminal constructs the audio control
interface. The PCM2901/2903 has the following five terminals.
D
Input terminal (IT #1) for isochronous-out stream
D
Output terminal (OT #2) for audio analog output
D
Feature unit (FU #3) for DAC digital attenuator
D
Input terminal (IT #4) for audio analog input
D
Output terminal (OT #5) for isochronous-in stream
Input terminal #1 is defined as USB stream (terminal type 0x0101). Input terminal #1 can accept 2-channel audio
streams constructed by left and right channels. Output terminal #2 is defined as a speaker (terminal type
0x0301). Input terminal #4 is defined as microphone (terminal type 0x0201). Output terminal #5 is defined as
a USB stream (terminal type 0x0101). Output terminal #5 can generate 2-channel audio streams constructed
by left and right channels. Feature unit #3 supports the following sound control features.
D
Volume control
D
Mute control
The built-in digital volume controller can be manipulated by an audio class specific request from 0 dB to 64 dB
in 1-dB steps. Changes are made by incrementing or decrementing by one step (1 dB) for every 1/f
S
time interval
until the volume level has reached the requested value. Each channel can be set for different values. The master
volume control is not supported. A request to the master volume is stalled and ignored. The built-in digital mute
controller can be manipulated by audio class specific request. A master mute control request is acceptable. A
request to an individual channel is stalled and ignored.
Interface #1
Interface #1 is for audio streaming data out interface. Interface #1 has the following seven alternative settings.
Alternative setting #0 is the zero bandwidth setting.
ALTERNATIVE
SETTING
DATA FORMAT
TRANSFER
MODE
SAMPLING RATE
(kHz)
00
Zero Bandwidth
01
16 bit
Stereo
2s complement (PCM)
Adaptive
32, 44.1, 48
02
16 bit
Mono
2s complement (PCM)
Adaptive
32, 44.1, 48
03
8 bit
Stereo
2s complement (PCM)
Adaptive
32, 44.1, 48
04
8 bit
Mono
2s complement (PCM)
Adaptive
32, 44.1, 48
05
8 bit
Stereo
Offset binary (PCM8)
Adaptive
32, 44.1, 48
06
8 bit
Mono
Offset binary (PCM8)
Adaptive
32, 44.1, 48
PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
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24
Interface #2
Interface #2 is for the audio streaming data in the interface. Interface #2 has the following 15 alternative settings.
Alternative setting #0 is the zero bandwidth setting. All other alternative settings are operational settings.
ALTERNATIVE
SETTING
DATA FORMAT
TRANSFER
MODE
SAMPLING RATE
(kHz)
00
Zero Bandwidth
01
16 bit
Stereo
2s complement (PCM)
Asynchronous
48
02
16 bit
Mono
2s complement (PCM)
Asynchronous
48
03
16 bit
Stereo
2s complement (PCM)
Asynchronous
44.1
04
16 bit
Mono
2s complement (PCM)
Asynchronous
44.1
05
16 bit
Stereo
2s complement (PCM)
Asynchronous
32
06
16 bit
Mono
2s complement (PCM)
Asynchronous
32
07
16 bit
Stereo
2s complement (PCM)
Asynchronous
22.05
08
16 bit
Mono
2s complement (PCM)
Asynchronous
22.05
09
16 bit
Stereo
2s complement (PCM)
Asynchronous
16
0A
16 bit
Mono
2s complement (PCM)
Asynchronous
16
0B
8 bit
Stereo
2s complement (PCM)
Asynchronous
16
0C
8 bit
Mono
2s complement (PCM)
Asynchronous
16
0D
8 bit
Stereo
2s complement (PCM)
Asynchronous
8
0E
8 bit
Mono
2s complement (PCM)
Asynchronous
8
0F
16 bit
Stereo
2s complement (PCM)
Synchronous
11.025
10
16 bit
Mono
2s complement (PCM)
Synchronous
11.025
11
8 bit
Stereo
2s complement (PCM)
Synchronous
11.025
12
8 bit
Mono
2s complement (PCM)
Synchronous
11.025
Interface #3
Interface #3 is for interrupt data in interface. Alternative setting #0 is the only possible setting for interface #3.
Interface #3 constructs the HID consumer control device. Interface #3 reports the following three key statuses.
D
Mute (0xE209)
D
Volume up (0xE909)
D
Volume down (0xEA09)
Endpoints
The PCM2901/2903 has the following four endpoints.
D
Control endpoint (EP #0)
D
Isochronous-out audio data stream endpoint (EP #2)
D
Isochronous-in audio data stream endpoint (EP #4)
D
HID endpoint (EP #5)
The control endpoint is a default endpoint. The control endpoint is used to control all functions of the
PCM2901/2903 by the standard USB request and USB audio class specific request from the host. The
isochronous-out audio data stream endpoint is an audio sink endpoint, which receives the PCM audio data. The
isochronous-out audio data stream endpoint accepts the adaptive transfer mode. The isochronous-in audio
data stream endpoint is an audio source endpoint, which transmits the PCM audio data. The isochronous-in
audio data stream endpoint uses asynchronous transfer mode. The HID endpoint is an interrupt-in endpoint.
HID endpoint reports HID0, HID1, and HID2 pin status in every 32 ms.
The human interface device (HID) pins are defined as consumer control devices. The HID function is designed
as an independent endpoint from both isochronous-in and -out endpoints. This means that the result of affection
for the HID operation is depending on the host software. Typically, the HID function is affected for the primary
audio-out device.
PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
www.ti.com
25
Clock and Reset
The PCM2901/2903 requires a 12-MHz (
500 ppm) clock for the USB and audio function, which can be
generated by a built in crystal oscillator with a 12-MHz crystal resonator or supplied by an external clock. The
12-MHz crystal resonator must be connected to XTI (pin 21) and XTO (pin 20) with one high (1 M
) resistor
and two small capacitors, which capacitance's depends on the load capacitance of the crystal resonator. If the
external clock is used, the clock must be supplied to XTI and XTO must be open.
The PCM2901/2903 has an internal power-on reset circuit, which works automatically when V
DD
(pin 27)
exceeds 2.5 V typical (2.7 V
to
2.2 V) and about 700
s is required until internal reset release.
Digital Audio Interface (PCM2903)
The PCM2903 employs both S/PDIF input and output. Isochronous-out data from the host is encoded to the
S/PDIF output and the DAC analog output. Input data is selected as either S/PDIF or ADC analog input. When
device detect S/PDIF input and successfully locked received data, the isochronous-out transfer data source
is automatically selected from S/PDIF itself, otherwise the data source is selected to ADC analog input.
Supported Input Data (PCM2903)
The following data formats are accepted by the S/PDIF input and output. All other data formats are unable to
use S/PDIF.
D
48-kHz 16-bit stereo
D
44.1-kHz 16-bit stereo
D
32-kHz 16-bit stereo
Mismatch between input data format and host command may cause unexpected results except in the following
conditions.
D
Record monaural format from stereo data input at the same data rate
D
Record 8-bit format from 16-bit data input at the same data rate
A combination between the above conditions is also accepted.
For the playback, all possible data rate source is converted to 16-bit stereo format at the same source data rate.
Copyright Management (PCM2903)
Isochronous-in data is affected by the serial copy management system (SCMS). Where receiving digital audio
data that is indicated as original data in the control bit, input digital audio data transfers to the host. If the data
is indicated as first generation or higher, transferred data is selected to analog input.
Digital audio data output is always encoded as original with SCMS control.
The implementation of this feature is an option for the customer. Note that it is the user's responsibility whether
they implement this feature in their product or not.
INTERFACE SEQUENCE
Power On, Attach, and Play Back Sequence
The PCM2901/2903 is ready for setup when the reset sequence has finished and the USB bus is attached. In
order to perform certain reset sequences defined in the USB specification, V
DD
, V
CCC
, V
CCP1
, V
CCP2
, and V
CCX
must rise up with 10 ms / 3.3 V. After connection has been established by setup, the PCM2901/2903 is ready
to accept USB audio data. While waiting, the audio data (idle state) and analog output are set to bipolar zero
(BPZ).
When receiving the audio data, the PCM2901/2903 stores the first audio packet, which contained 1-ms audio
data, into the internal storage buffer. The PCM2901/2903 starts playing the audio data when detecting the
following start of frame (SOF) packet.
PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
www.ti.com
26
D+/D
2.5 V (Typ.)
0 V
Internal Reset
Ready for Setup
SOF
Ready for Playback
SEL1 (Pin 9)
Attach
(Connect to USB Bus)
Bus Reset
Set Configuration
SOF
SOF
BPZ
Bus Idle
3.3 V
(Typ.)
5 V = VBUS
(Typ.)
1st Audio Data
2nd Audio Data
VDD (Pin 27)
SSPND
VOUTL
VOUTR
700
s
Device Setup
1 ms
Figure 35. Attach After Power-On
PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
www.ti.com
27
D+/D
2.5 V (Typ.)
0 V
Internal Reset
Ready for Setup
SOF
Ready for Playback
SEL1 (Pin 9)
Bus Reset
Set Configuration
SOF
SOF
BPZ
Bus Idle
3.3 V
(Typ.)
5 V = VBUS
(Typ.)
1st Audio Data
2nd Audio Data
SSPND
VOUTL
VOUTR
700
s
Device Setup
1 ms
VDD (Pin 27)
Figure 36. Power-On Under Attach
Play, Stop, and Detach Sequence
When the host finishes or aborts the play back, the PCM2901/2903 stops playing after the last audio data has
played.
Record Sequence
The PCM2901/2903 starts the audio capture into the internal memory after receiving the SET_INTERFACE
command.
Suspend and Resume Sequence
The PCM2901/2903 enters the suspend state after it sees a constant idle state on the USB bus, approximately
5 ms. While the PCM2901/2903 enters the suspend state, the SSPND flag (pin 28) is asserted. The
PCM2901/2903 wakes up immediately after detecting a non-idle state on the USB bus.
PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
www.ti.com
28
D+/D
5 V = VBUS
(Typ.)
VOUTL
VOUTR
Audio Data
Audio Data
Last Audio Data
Detach
SOF
SOF
SOF
SOF
SOF
1 ms
SEL1 (Pin 9)
Figure 37. Play, Stop, and Detach
D+/D
VINL
VINR
1 ms
SET_INTERFACE
Audio Data
IN Token
Audio Data
IN Token
Audio Data
IN Token
SOF
SOF
SOF
SOF
SOF
Figure 38. Record Sequence
5 ms
D+/D
SSPND
Idle
Active
Active
Suspend
Figure 39. Suspend and Resume
PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
www.ti.com
29
PCM2901 TYPICAL CIRCUIT CONNECTION
Figure 40 illustrates a typical circuit connection.
NOTE:
IC1 must be driven by VDD with a 5-V tolerant input.
C1, C2, C3, C4, C7, C8: 10
F
C5, C6: 10 pF to 33 pF (depending on crystal resonator)
C9, C10, C11, C12: The capacitance may vary depending on design
D+
28
27
26
25
24
23
22
21
20
19
1
2
3
4
5
6
7
8
9
10
PCM2901
D
VBUS
DGNDU
HID0
HID1
HID2
SEL0
SEL1
VCCC
SSPND
XTI
VDD
DGND
TEST1
TEST0
XTO
VCCP2
AGNDX
VCCX
D+
D
MUTE/
Power Down
C1
11
12
13
14
AGNDC
VINL
VINR
VCOM
18
17
16
15
VCCP1
VOUTL
VOUTR
AGNDP
22
22
VDD (3.3 V)
1.5 k
x 3
IC1
1.5 k
GND
VBUS
1 M
C2
C9
C10
VCC (3.3 V)
1 M
12 MHz
C5
C6
C3
C4
C7
C8
C11
C12
LPF,
Amp
LPF,
Amp
Figure 40. Self-Powered Configuration
NOTE:
The circuit illustrated above is for information only. The whole board design should be considered
to meet the USB specification as a USB compliant product.
PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
www.ti.com
30
PCM2903 TYPICAL CIRCUIT CONNECTION
Figure 41 illustrates a typical circuit connection.
NOTE:
IC1 must be driven by VDD with a 5-V tolerant input.
C1, C2, C3, C4, C7, C8: 10
F
C5, C6: 10 pF to 33 pF (depending on crystal resonator)
C9, C10, C11, C12: The capacitance may vary depending on design
D+
28
27
26
25
24
23
22
21
20
19
1
2
3
4
5
6
7
8
9
10
PCM2903
D
VBUS
DGNDU
HID0
HID1
HID2
SEL0
SEL1
VCCC
SSPND
XTI
VDD
DGND
DOUT
DIN
XTO
VCCP2
AGNDX
VCCX
D+
D
MUTE/
Power Down
C1
11
12
13
14
AGNDC
VINL
VINR
VCOM
18
17
16
15
VCCP1
VOUTL
VOUTR
AGNDP
22
22
VDD (3.3 V)
1.5 k
x 3
IC1
1.5 k
GND
VBUS
1 M
C2
C9
C10
VCC (3.3 V)
1 M
12 MHz
C5
C6
C3
C4
C7
C8
C11
C12
LPF,
Amp
LPF,
Amp
Figure 41. Self-Powered Configuration
NOTE:
The circuit illustrated above is for information only. The whole board design should be considered
to meet the USB specification as a USB compliant product.
PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
www.ti.com
31
APPLICATION INFORMATION
OPERATING ENVIRONMENT
To get the appropriate operation, one of the following operating systems must be working on the host PC that
has the USB port assured by the manufacturer. If the condition is fulfilled, the operation of the PCM2901/2903
does not depend upon the operating speed of the CPU.
Texas Instruments has confirmed following operating environments.
D
OS: Microsoft
Windows
98/98SE/Me Japanese/English Edition
Microsoft
Windows
2000 Professional Japanese/English Edition
Microsoft
Windows
XP Home/Professional Japanese/English Edition (For Windows
XP, use the
latest version of the USB audio driver that is available on Windows update site)
Apple Computer
Mac OS 9.1 or later Japanese/English Edition
Apple Computer
Mac OS X 10.0 or later English Edition
Apple Computer
Mac OS X 10.1 or later Japanese Edition (For Mac OS X 10.0 Japanese Edition, plug
and play does not work for USB audio device appropriately)
D
PC: Following PC-AT compatible computers for above OS (OS requirement must meet)
Motherboard using Intel
440BX or ZX chip set (using USB controller in the chip set)
Motherboard using Intel
i810 chip set (using USB controller in the chip set)
Motherboard using Intel
i815 chip set (using USB controller in the chip set)
Motherboard using Intel
i820 chip set (using USB controller in the chip set)
Motherboard using Intel
i845 chip set (using USB controller in the chip set)
Motherboard using Intel
i850 chip set (using USB controller in the chip set)
Motherboard using Apollo KT133 chip set (using USB controller in the chip set)
Motherboard using Apollo Pro plus chip set (using USB controller in the chip set)
Motherboard using MVP4 or MVP3 chip set (using USB controller in the chip set)
Motherboard using Aladdin V chip set (using USB controller in the chip set)
Motherboard using SiS530 or SiS559 chip set (using USB controller in the chip set)
Motherboard using SiS735 chip set (using USB controller in the chip set)
NOTE:
This does not mean that the operation of the PCM2901/2903 is not assured for the OS and PC
except for the ones listed. The OSs and PCs for which the operation of the PCM2901/2903 was
confirmed are written above.
PCM2901/2903 has been acknowledged in the USB compliance test. However, the
acknowledgement is just for the PCM2901/2903 from Texas Instruments. Be careful that the
acknowledgement is not for the customer's USB system using the PCM2901/2903.
PCM2901
PCM2903
SLES034A MARCH 2002 REVISED MAY 2002
www.ti.com
32
MECHANICAL DATA
DB (R-PDSO-G**)
PLASTIC SMALL-OUTLINE
4040065 /E 12/01
28 PINS SHOWN
Gage Plane
8,20
7,40
0,55
0,95
0,25
38
12,90
12,30
28
10,50
24
8,50
Seating Plane
9,90
7,90
30
10,50
9,90
0,38
5,60
5,00
15
0,22
14
A
28
1
20
16
6,50
6,50
14
0,05 MIN
5,90
5,90
DIM
A MAX
A MIN
PINS **
2,00 MAX
6,90
7,50
0,65
M
0,15
0
8
0,10
0,09
0,25
NOTES:A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion not to exceed 0,15.
D. Falls within JEDEC MO-150
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