DIGITAL CONTROLLED AUDIO PROCESSOR
S1A0501X01
1
GENERAL DESCRIPTION
The S1A0501X01 is an audio processor for volume/tone/fader
control, which is suitable for car radios or Hi-Fi system. It has a
built-in trimmer for user to set a source level. R/L rear output is
changable to input in the case of a home audio system for user
conveniency, an external equalizer or a noise reduction circuit
is selectable.
When the S1A0501X01 is used with some sound-effect equip-
ment such as graphic equalizer, the internal tone control block
of S1A0501X01 can be bypassed for decreasing redundancy.
All selections and function controls are designed to be con-
trolled by an I
2
C-bus protocol or a general microprocessor
interface protocol.
FEATURES
3-Input multiplexing
Source Level trimmer (selectable input level)
Volume control in 0.6dB step
Tone control (internal bass/treble function block with external components)
Source out / volume in (enable ext.graphic eq./ noise reduction equipment)
Loudness / mute
Fader control ( separated for balance )
All functions are programmable / controllable via serial I
2
C bus
or general Micom interface protocol.
ORDERING INFORMATION
Device
Package
Operating Temperature
S1A0501X01-S0B0
32
-
SOP
-
450B
-
25
C - +75
C
32
-
SOP
-
450B
#1
S1A0501X01
DIGITAL CONTROLLED AUDIO PROCESSOR
2
BLOCK DIAGRAM
PIN CONFIGURATION
2.2uF
each
1.0uF
AGND
RIGHT
INPUT
1 - 3
LEFT
INPUT
1 - 3
0.47uF
0.0027uF
0.1uF
0.1uF
5.6K
0.47uF
0.0027uF
2.2uF
2.2uF
2.2uF
each
0.1uF
0.1uF
1
1
2
3
DGND
VCC
Each
to
block
4.7uF
RRO
4.7uF
LRO
SDA
STB
SCL
4.7uF
RFO
4.7uF
LFO
10uF
10uF
0.1uF
11
10
9
2
13
14
15
28
3
19
18
12
21
20
4
16
27
25
30
31
32
24
26
17
5
22
23
8
6
7
29
1
2
2
VOLTAGE
REFERENCE
SERIAL I
2
C BUS INTERFACE
VOLUME
BASS
TREBLE
VOLUME
BASS
TREBLE
FADER
FADER
5.6k
S1A0501X01
CREF
VCC
AGND
LTC
RSRCOUT
RVOLC
RIN3
RIN2
RIN1
LVOLC
LIN3
LIN2
RTC
RVOLIN
LIN1
DGND
LFO
RRO
RBC1
RBC2
LBC1
LBC2
LSRCOUT
LVOLIN
LRO
RFO
SCL
DREF
STB
1
2
3
4
7
8
9
10
11
12
13
14
5
6
15
32
31
30
29
26
25
24
23
22
21
20
19
28
27
18
SDA
OCC1
OCC2
16
17
DIGITAL CONTROLLED AUDIO PROCESSOR
S1A0501X01
3
PIN DESCRIPTION
Pin
Symbols
Description
1
VCC
Power Supply
2
CREF
Reference Voltage Ripple Rejection Capacitor Tab
3
AGND
Analog Ground (0V)
4
LTC
Left Treble Capacitor Tab
5
RTC
Right Treble Capacitor Tab
6
RVOLIN
Right Volume In / External Equalizer For Right Channel
7
RSRCOUT
Right Source Out / External Equalizer For Right Channel
8
RVOLC
Right Volume Loudness Capacitor Tab
9
RIN3
Right Audio Input3
10
RIN2
Right Audio Input2
11
RIN1
Right Audio Input1
12
LVOLC
Left Volume Loudness Capacitor Tab
13
LIN3
Left Audio Input3
14
LIN2
Left Audio Input2
15
LIN1
Left Audio Input1
16
OCC1
Offset Cancelling Capacitor Tab1
17
OCC2
Offset Cancelling Capacitor Tab2
18
LVOLIN
Left Volume In / External Equalizer For Left Channel
19
LSRCOUT
Left Source Out / External Equalizer For Left Channel
20
LBC2
Left Bass Capacitor Tab2
21
LBC1
Left Bass Capacitor Tab1
22
RBC2
Right Bass Capacitor Tab2
23
RBC1
Right Bass Capacitor Tab1
24
RRO
Right Rear Audio Output
25
LRO
Left Rear Audio Output
26
RFO
Right Front Audio Output
27
LFO
Left Front Audio Output
28
DGND
Digital Ground (0V)
29
DREF
Internally-generated Digital Power Stabilization Capacitor Tab
30
SDA
Data Signal Input Of I
2
C Bus
31
SCL
Clock Signal Input Of I
2
C Bus
32
STB
Strobe Signal Input
S1A0501X01
DIGITAL CONTROLLED AUDIO PROCESSOR
4
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
Electrical Characteristics (Vi = 1Vrms/1kHz, Ta=25
C, VCC=13.2V TYP)
Parameters
Symbols
Value
Unit
Supply Voltage
VCCmax
15.0
V
Max.Power Dissipation
Pdmax
1000
mW
Max.Operating Temperature
Topr
-25 to +75
Max.Storage Temperature
Tstg
- 40 to +125
Parameters
Test Conditions
Specifications
Unit
Min
Typ
Max
Operating Voltage
-
6.0
-
15.0
V
Supply Current
Vi=0
6.0
10.0
14.0
mA
Input Dynamic
VCC=13.2V, Output T.H.D.=0.1%
6.0
-
-
Vp-p
Input Crosstalk
Vi=1Vrms,1kHz, 20Hz-20kHz BPF
-
-
-89.0
dB
Trimming Range
-
-5.4
-6.0
-
dB
Channel
Crosstalk
Vi=1Vrms,1kHz, 20Hz-20kHz BPF
-
-
-89.0
dB
Channel
Balance
Vi=1Vrms,1kHz
-2.0
-
2.0
dB
Voltage Gain
Vi=1Vrms,1kHz, Volume=Max
-2.0
0.0
2.0
dB
S/N Ratio
Vi=1Vrms,1kHz, 20Hz-20kHz BPF
-
92
dB
T.H.D.
Vi=1Vrms,1kHz, Volume=Max
-
0.005
0.01
%
Loudness
Boost
Vi=1Vrms,100Hz
0.2
-
10.5
dB
Max.Volume attenuation
Vi=1Vrms,1kHz, Volume=Min
-76.2
-74.2
dB
Bass
Control Range
Vi=1Vrms,100Hz, Bass= Min/Max
-14
-
14
dB
Treble Control Range
Vi=1Vrms,10kHz, Treble= Min/Max
-12
-
12
dB
Front/Rear
Balance
Vi=1Vrms,1kHz, Fader= Middle
-
-
1.0
dB
Front/Rear Control Range
Vi=1Vrms,1kHz, Fader= Min
-
-
-38.75
dB
Frequency
Response
-3dB
20
-
20000
Hz
Mute
Attenuation
Vi=1Vrms,1kHz, 20Hz-20kHz BPF
-100
-
-90
dB
DIGITAL CONTROLLED AUDIO PROCESSOR
S1A0501X01
5
SERIAL BUS INTERFACE PROTOCOL - THE I
2
C BUS
Timing Diagram of I
2
C Bus Protocol
I
2
C Bus Byte Format of S1A0501X01
S
=
A start Condition
Slave Address
=
Chip Address ( 10000000B )
ACK
=
Acknowledge ( from Slave )
Sub Address
=
Transferred Data1 ( assigning Function )
DATA
=
Transferred Data2 ( assigning Operation )
P
=
A Stop Condition
STB Signal 'LOW
'=
Always 'LOW' when I
2
C Bus protocol (tied to 'GND').
Max.SCL Frequency 200kHz
Start
1 - 8
9
10 - 17
18
19 - 26
27
Stop
S
Slave Address
ACK
Sub Address
ACK
DATA
ACK
P
1
2
3
SCL
SDA
25
26
27
start
stop
STB
S1A0501X01
DIGITAL CONTROLLED AUDIO PROCESSOR
6
Acknowledge on the I
2
C Bus Interface Protocol
Software Specification of S1A0501X01
<< Byte Organization - I
2
C Bus Transmission >>
cf> 'Rearin Control' of MISC.CONTROL is a
NOT-supported
function in present version of S1A0501X01.
So this bit should be always '
HIGH
' when transferring control data.
FUNCTIONS
SUB
DATA BYTE
REMARKS
Address
MSB
B6
B5
B4
B3
B2
B1
LSB
Input
Control
Select
0 0 0 X X X X X
SSEL
1
SSEL
0
X
X
X
Trimmer Set
STS1 STS0
X
X
X
Loudness
SLD
X
X
X
Volume
Control
Fine
0 0 1 X X X X X
SVF3 SVF2 SVF1 SVF0
X
Coarse
SVC2 SVC1 SVC0
X
Tone
Control
Bass
0 1 0 X X X X X
SB3
SB2
SB1
SB0
SB3 , ST3 :
Treble
ST3
ST2
ST1
ST0
OOST / CUT
Fader
Control
Left Front
0 1 1 X X X X X
Left Rear
1 0 0 X X X X X
Right Front
1 0 1 X X X X X
SF4
SF3
SF2
SF1
SF0
X
X
X
Right Rear
1 1 0 X X X X X
Misc.
Control
Rearin Con
1 1 1 X X X X X
SRIC
X
X
X
X
X
SET
MUTE
SMUT
E
X
X
X
X
X
'HIGH'
EXT.EQ
SEQ
X
X
X
X
X
SDA
MSB
Acknowledgement signal
form Receiver
Resistive HIGH
from Master
SCL
start
1
2
3
7
8
9
DIGITAL CONTROLLED AUDIO PROCESSOR
S1A0501X01
7
SOFTWARE SPECIFICATION
-- Input Select / Trimmer Setting / Loudness Control
FUNCTION SUBADDRESS
DATA BYTE
VALUE
REMARK
Input Select
BYTE FORMAT
b7 b6 b5
b7
b6
b5
b4
b3
b2
b1
b0
0 0 0
0
0
X
X
X
INPUT1
0
1
X
X
X
INPUT2
1
0
X
X
X
INPUT3
1
1
X
X
X
*INPUT4
Not Used
Trimmer
Setting
0
0
X
X
X
0 dB
0
1
X
X
X
- 2 dB
2 dB STEP
1
0
X
X
X
- 4 dB
(4 )
1
1
X
X
X
- 6 dB
Loudness
0
X
X
X
ON
1
X
X
X
OFF
S1A0501X01
DIGITAL CONTROLLED AUDIO PROCESSOR
8
SOFTWARE SPECIFICATION - Volume Control
FUNCTION SUBADDRESS
DATA BYTE
VALUE
REMARK
Volume
Control
BYTE FORMAT
b7 b6 b5
b7
b6
b5
b4
b3
b2
b1
b0
0 0 1
0
0
0
0
X
0 dB
0
0
0
1
X
0.6 dB
0
0
1
0
X
1.2 dB
0
0
1
1
X
1.8 dB
0.6 dB STEP
0
1
0
0
X
2.4 dB
(16)
0
1
0
1
X
3.0 dB
0
1
1
0
X
3.6 dB
0
1
1
1
X
4.2 dB
1
0
0
0
X
4.8 dB
1
0
0
1
X
5.4 dB
1
0
1
0
X
6.0 dB
1
0
1
1
X
6.6 dB
1
1
0
0
X
7.2 dB
1
1
0
1
X
7.8 dB
1
1
1
0
X
8.4 dB
1
1
1
1
X
9.0 dB
0
0
0
X
0 dB
0
0
1
X
9.6 dB
0
1
0
X
19.2 dB
1
1
1
X
28.8 dB
9.6 dB STEP
1
0
0
X
38.4 dB
(8)
1
0
1
X
48.0 dB
1
1
0
X
57.6 dB
1
1
1
X
67.2 dB
DIGITAL CONTROLLED AUDIO PROCESSOR
S1A0501X01
9
SOFTWARE SPECIFICATION - Tone Control : Bass boost/cut1
FUNCTION
SUBADDRESS
DATA BYTE
VALUE
REMARK
Bass Control
BYTE FORMAT
b7 b6 b5
b7
b6
b5
b4
b3
b2
b1
b0
0 1 0
0
0
0
0
- 14 dB
2 dB STEP
0
0
0
1
- 12 dB
0
0
1
0
- 10 dB
0
0
1
1
- 8 dB
0
1
0
0
- 6 dB
0
1
0
1
- 4 dB
0
1
1
0
- 2 dB
0
1
1
1
0 dB
1
1
1
1
0 dB
1
1
1
0
2 dB
1
1
0
1
4 dB
1
1
0
0
6 dB
1
0
1
1
8 dB
1
0
1
0
10 dB
1
0
0
1
12 dB
1
0
0
0
14 dB
S1A0501X01
DIGITAL CONTROLLED AUDIO PROCESSOR
10
SOFTWARE SPECIFICATION - Tone Control : Treble boost/cut
FUNCTION SUBADDRESS
DATA BYTE
VALUE
REMARK
Treble Control
BYTE FORMAT
b7 b6 b5
b7
b6
b5
b4
b3
b2
b1
b0
0 1 0
0
0
0
0
- 11.9 dB
1.7 dB STEP
0
0
0
1
- 10.2 dB
0
0
1
0
- 8.5 dB
0
0
1
1
- 6.8 dB
0
1
0
0
- 5.1 dB
0
1
0
1
- 3.4 dB
0
1
1
0
- 1.7 dB
0
1
1
1
0 dB
1
1
1
1
0 dB
1
1
1
0
1.7 dB
1
1
0
1
3.4 dB
1
1
0
0
5.1 dB
1
0
1
1
6.8 dB
1
0
1
0
8.5 dB
1
0
0
1
10.2 dB
1
0
0
0
11.9 dB
DIGITAL CONTROLLED AUDIO PROCESSOR
S1A0501X01
11
SOFTWARE SPECIFICATION - Fader / Miscellaneous Control DATA BYTE BYTE FORMAT
FUNCTION
SUBADDRESS
DATA BYTE
VALUE
REMARK
BYTE FORMAT
b7 b6 b5
b7
b6
b5
b4
b3
b2
b1
b0
Fader Control
0 1 1
Left Front
1 0 0
Left Rear
1 0 1
Right front
1 1 0
Right Rear
0
0
0
X
X
X
0 dB
0
0
1
X
X
X
- 1.25 dB
0
1
0
X
X
X
- 2.5 dB
0
1
1
X
X
X
- 3.75 dB
1.25 dB
1
0
0
X
X
X
- 5.0 dB
STEP
1
0
1
X
X
X
- 6.25 dB
(8)
1
1
0
X
X
X
- 7.5 dB
1
1
1
X
X
X
- 8.75 dB
0
0
X
X
X
0 dB
0
1
X
X
X
- 10 dB
10 dB STEP
1
0
X
X
X
- 20 dB
(4)
1
1
X
X
X
- 30 dB
Rear-in
1 1 1
0
X
X
X
X
X
ENABLE
Should Be
Control
1
X
X
X
X
X
DISABLE
'DISABLE'
Mute
0
X
X
X
X
X
ON
1
X
X
X
X
X
OFF
External
0
X
X
X
X
X
ENABLE
Equalizer
1
X
X
X
X
X
DISABLE
S1A0501X01
DIGITAL CONTROLLED AUDIO PROCESSOR
12
SERIAL BUS INTERFACE PROTOCOL - THE GENERAL CASE
Timing Diagram of General MICOM Interface Bus Protocol
General MICOM Interface Bus Byte Format Of S1A0501X01
Chip Select Code
=
Same As I
2
C Bus Slave Address ( 1000000
B )
X
=
Don't Care Bit (Not Used Bit)
Function Code
=
Transferred Data1 ( assigning Function )
DATA
=
Transferred Data2 ( assigning Operation )
STB Signal 'LOW'
=
Chip Not Selected.
STB Signal 'HIGH'
=
Chip Selected.
Allowed Strobe Pulse Width (Maximum)
6.0ms
Bit Stream
1 - 7
8
9 - 16
17 - 24
Meanings
Chip Select Code
Function Code
DATA
1
2
3
SCL
SDA
22
23
24
STB
DIGITAL CONTROLLED AUDIO PROCESSOR
S1A0501X01
13
Volume Step vs output Level
Input :1Vrms
Vcc=12V
L-ON
L-OFF
Balance & Fader Step vs output Level
Input :1Vrms
Vcc=12V
Balance/Fader(dB)
L-OUT
R-OUT
SAMSUNG Electronics
KB22501 EVT4 VR or MUTE ATT
Ư
(13V)
INPUT : 1Vrms
Color
Line Style Thick Data
Axis
Yellow Solid
2
Anlr.Ampl Left
Red
Solid
2
Anlr.Ampl Left
-100
+0
-80
-60
-40
-20
d
B
r
10
20k
20
50
100
200
500
1k
2k
5k
10k
Hz
: VR-MIN ATT , : MUTE ATT
Volume & Mute Attenuation
Input : 1Vrms
Vcc=12V
Volume Attenuation
Mute Attenuation
SAMSUNG Electronics
KB22501 EVT4 TONE
Ư
(12V)
INPUT : 300mV , VR MAX
Color Line Style
Thick Data
Axis
Blue
Solid
1
Anlr.Level A Left
Cyan
Solid
2
Anlr.Level A Left
Green Solid
2
Anlr.Level A Left
-15
+15
-10
-5
+0
+5
+10
d
B
r
10
30k
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Bass & Treble Boost / Cut
Input : 300mVrm s, Volume=Max
Vcc=12V
SAMSUNG Electronics
KB22501 EVT4 LOUDNESS
Ư
(12V)
INPUT : 300mV , VR -37.8dB
-50
+0
-40
-30
-20
-10
d
B
r
10
30k
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Loudness Boost
Input : 300mVrms, Volume=-37.8dB
Vcc=12V
SAMSUNG Electronics
KB22501 EVT4 THD
Ư
(13V)
INPUT : 1Vrms
0.01
0.05
0.02
0.03
0.04
%
10
20k
20
50
100
200
500
1k
2k
5k
10k
Hz
: VR -20dB , : VR 0dB
Total Harmonic Distortion(T.H.D.)
Input : 1Vrms
Vcc=12V
Volume - 20 dB
Volume 0 dB
S1A0501X01
DIGITAL CONTROLLED AUDIO PROCESSOR
14
SAMSUNG Electronics
KB22501 FUNCTION CROSS TALK
Ư
(13V)
INPUT : 1Vrms
Color
Line Style Thick Data
Axis
-100
+0
-80
-60
-40
-20
d
B
r
10
20k
20
50
100
200
500
1k
2k
5k
10k
Hz
Input CrossTalk
Selected Input : 1Vrms, Otherwise : Short
Vcc=12V
SAMSUNG Electronics
KB22501 L/R SEPARATION
Ư
(13V)
INPUT : 1Vrms
-100
+0
-80
-60
-40
-20
d
B
r
10
20k
20
50
100
200
500
1k
2k
5k
10k
H z
L/R Channel Separation
Selected Channel Input :1Vrms
The Other : Short, Vcc=12V
DIGITAL CONTROLLED AUDIO PROCESSOR
S1A0501X01
15
APPLICATION CIRCUIT 1
MODE I : 3 INPUTS - 1 OUTPUT
0.0027uF
0.47uF
VCC
2.2uF
0.0027uF
2.2uF
2.2uF
2.2uF
2.2uF
2.2uF
2.2uF
0.47uF
2.2uF
0.1uF
0.1uF
5.6K
0.1uF
0.1uF
5.6K
4.7uF
4.7uF
4.7uF
4.7uF
1.0uF
MICOM
Control Data
100uF
0.1uF
VDD
100k
100k
0.1uF
+
+
+
+
+
+
+
+
+
+
+
V
O
(RR)
V
O
(LF)
10uF
10uF
S1A0501X01
CREF
VCC
AGND
LTC
RSRCOUT
RVOLC
RIN3
RIN2
RIN1
LVOLC
LIN3
LIN2
RTC
RVOLIN
LIN1
DGND
LFO
RRO
RBC1
RBC2
LBC1
LBC2
LSRCOUT
LVOLIN
LRO
RFO
SCL
DREF
STB
1
2
3
4
7
8
9
10
11
12
13
14
5
6
15
32
31
30
29
26
25
24
23
22
21
20
19
28
27
18
SDA
OCC1
OCC2
16
17
+
+
RIN3
RIN2
+
RIN1
LIN3
LIN2
LIN1
+
V
O
(RF)
V
O
(LR)
S1A0501X01
DIGITAL CONTROLLED AUDIO PROCESSOR
16
APPLICATION CIRCUIT 2
MODE II : 3 INPUTS - 1 OUTPUT W/ EXT.EQUIPMENT
Cf> Let the microprocessor set
`
SEQ
'
signal to 0, if an external device is an audio-signal controlled processor such
as a graphic equalizer.
0.0027uF
0.47uF
VCC
2.2uF
0.0027uF
2.2uF
2.2uF
2.2uF
2.2uF
2.2uF
2.2uF
0.47uF
2.2uF
0.1uF
0.1uF
5.6K
0.1uF
0.1uF
5.6K
4.7uF
4.7uF
4.7uF
4.7uF
1.0uF
MICOM
Control Data
100uF
0.1uF
VDD
100k
100k
0.1uF
+
+
+
+
+
+
+
+
+
+
V
O
(RR)
V
O
(LF)
10uF
10uF
S1A0501X01
CREF
VCC
AGND
LTC
RSRCOUT
RVOLC
RIN3
RIN2
RIN1
LVOLC
LIN3
LIN2
RTC
RVOLIN
LIN1
DGND
LFO
RRO
RBC1
RBC2
LBC1
LBC2
LSRCOUT
LVOLIN
LRO
RFO
SCL
DREF
STB
1
2
3
4
7
8
9
10
11
12
13
14
5
6
15
32
31
30
29
26
25
24
23
22
21
20
19
28
27
18
SDA
OCC1
OCC2
16
17
+
+
RIN3
RIN2
+
RIN1
LIN3
LIN2
LIN1
+
V
O
(RF)
V
O
(LR)
EXTERNAL
EQUIPMENT
EXTERNAL
EQUIPMENT
+
+
+
2.2uF
DIGITAL CONTROLLED AUDIO PROCESSOR
S1A0501X01
17
APPLICATION CIRCUIT 3
MODE III : 3 INPUTS - 1 OUTPUT (NOT I
2
C BUS PROTOCOL)
0.0027uF
0.47uF
VCC
2.2uF
0.0027uF
2.2uF
2.2uF
2.2uF
2.2uF
2.2uF
2.2uF
0.47uF
2.2uF
0.1uF
0.1uF
5.6K
0.1uF
0.1uF
5.6K
4.7uF
4.7uF
4.7uF
4.7uF
1.0uF
MICOM
Control Data
100uF
0.1uF
VDD
100k
100k
0.1uF
+
+
+
+
+
+
+
+
+
+
+
V
O
(RR)
V
O
(LF)
10uF
10uF
S1A0501X01
CREF
VCC
AGND
LTC
RSRCOUT
RVOLC
RIN3
RIN2
RIN1
LVOLC
LIN3
LIN2
RTC
RVOLIN
LIN1
DGND
LFO
RRO
RBC1
RBC2
LBC1
LBC2
LSRCOUT
LVOLIN
LRO
RFO
SCL
DREF
STB
1
2
3
4
7
8
9
10
11
12
13
14
5
6
15
32
31
30
29
26
25
24
23
22
21
20
19
28
27
18
SDA
OCC1
OCC2
16
17
+
+
RIN3
RIN2
+
RIN1
LIN3
LIN2
LIN1
+
V
O
(RF)
V
O
(LR)
100k
S1A0501X01
DIGITAL CONTROLLED AUDIO PROCESSOR
18
NOTES
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