ASAHI KASEI
[AK4103A]
MS0251-E-00
2003/07
- 1 -
GENERAL DESCRIPTION
The AK4103A is a digital audio transmitter (DIT) which supports data rate up to 192kHz sample rate
operation. The AK4103A supports AES3, IEC60958, S/PDIF & EIAJ CP1201 interface standards. The
AK4103A accepts audio data, auxiliary information data and etc, which is then biphase-encoded and
driven on to a cable. The audio serial port supports eight formats.
FEATURES
o
Sampling Rate up to 192kHz
o
Support AES3, IEC60958, S/PDIF & EIAJ CP1201 professional and consumer formats
o
Generates CRCC codes and parity bits
o
On-chip RS422 line driver
o
16-byte on-chip buffer memory for Channel Status and User bits
o
Supports synchronous/asynchronous access to Channel Status and User bits
o
Supports multiple clock frequencies: 128fs, 256fs, 384fs and 512fs
o
Supports Left/Right justified and I
2
S audio formats
o
Easy to use 4 wire, Serial Host Interface
o
Audio Routing Mode (Transparent Mode)
o
Power supply: 4.75 to 5.25V
o
TTL level I/F
o
Small Package: 24pin VSOP
o
Temperature range of - 40 to 85
C
192kHz 24-Bit DIT
AK4103A
ASAHI KASEI
[AK4103A]
MS0251-E-00
2003/07
- 4 -
PIN/FUNCTION
No.
Pin Name
I/O
Description
1
V1
I
Validity Bit Input Pin
2
TRANS
I
Audio Routing Mode (Transparent Mode) Pin at Synchronous mode
0: Normal mode, 1: Audio routing mode (transparent mode)
3
PDN
I
Power Down & Reset Pin (Pull-up Pin)
When "L", the AK4103A is powered-down, TXP/N pins are "L" and the
control registers are reset to default values.
4
MCLK
I
Master Clock Input Pin
5
SDTI
I
Audio Serial Data Input Pin
6
BICK
I/O
Audio Serial Data Clock Input/Output Pin
Serial Clock for SDTI pin which can be configured as an output based on
the DIF2-0 inputs.
7
LRCK
I/O
Input/Output Channel Clock Pin
Indicates left or right channel, and can be configured as an output based on
the DIF2-0 inputs.
FS0
I
Sampling Frequency Select 0 Pin at Synchronous mode (Pull-down Pin)
CSN
I
Host Interface Chip Select Pin at Asynchronous mode (Pull-down Pin)
8
AKMODE
I
AK4112B Mode Pin at Audio routing mode (Pull-down Pin)
0: Non-AKM receivers mode, 1: AK4112B mode
FS1
I
Sampling Frequency Select 1 Pin at Synchronous mode (Pull-down Pin)
9
CDTI
I
Host Interface Data Input Pin at Asynchronous mode (Pull-down Pin)
FS2
I
Sampling Frequency Select 2 Pin at Synchronous mode (Pull-down Pin)
10
CCLK
I
Host Interface Bit Clock Input Pin at Asynchronous mode (Pull-down Pin)
FS3
I
Sampling Frequency Select 3 Pin at Synchronous mode (Pull-down Pin)
11
CDTO
O
Host Interface Data Output Pin at Asynchronous mode (Pull-down Pin)
12
C1
I
Channel Status Bit Input Pin
13
ANS
I
Asynchronous/Synchronous Mode Select Pin (Pull-up Pin)
0: Asynchronous mode, 1: Synchronous mode
14
BLS
I/O
Block Start Input/Output Pin (Pull-down Pin)
In normal mode, the channel status block output is "H" for the first four
bytes. In audio routing mode, the pin is configured as an input. When PDN
pin = "L", BLS pin goes "H" at Normal mode.
15
CKS0
I
Clock Mode Select 0 Pin (Pull-up Pin)
16
CKS1
I
Clock Mode Select 1 Pin (Pull-down Pin)
17
VDD
-
Power Supply Pin, 4.75V
5.25V
18
VSS
-
Ground Pin, 0V
19
TXN
O
Negative Differential Output Pin
20
TXP
O
Positive Differential Output Pin
21
DIF0
I
Audio Serial Interface Select 0 Pin (Pull-down Pin)
22
DIF1
I
Audio Serial Interface Select 1 Pin (Pull-down Pin)
23
DIF2
I
Audio Serial Interface Select 2 Pin (Pull-down Pin)
24
U1
I
User Data Bit Input Pin for Channel 1 (Pull-down Pin)
Notes:
1. Internal pull-up and pull-down resistors are connected on-chip. The value of the resistors is 43k
(typ).
2. All input pins except internal pull-down/pull-up pins should not be left floating.
ASAHI KASEI
[AK4103A]
MS0251-E-00
2003/07
- 5 -
ABSOLUTE MAXIMUM RATINGS
(VSS=0V; Note 3)
Parameter
Symbol
min
max
Units
Power Supply
VDD
-0.3
6.0
V
Input Current (All pins except supply pins)
IIN
-
10
mA
Input Voltage
VIND
-0.3
VDD+0.3
V
Ambient Operating Temperature
Ta
-40
85
C
Storage Temperature
Tstg
-65
150
C
Notes:
3. All voltages with respect to ground.
WARNING: Operation at or beyond these limits may results in permanent damage to the device.
Normal operation is not guaranteed at these extremes.
RECOMMENDED OPERATING CONDITIONS
(VSS=0V; Note 1)
Parameter
Symbol
min
typ
max
Units
Power Supply
VDD
4.75
5.0
5.25
V
*AKM assumes no responsibility for the usage beyond the conditions in this datasheet.
DC CHARACTERISTICS
(Ta=25
C; VDD=4.75~5.25V)
Parameter
Symbol
min
typ
max
Units
Power Supply Current (fs=108kHz, Note 4)
IDD
6
15
mA
High-Level Input Voltage
Low-Level Input Voltage
VIH
VIL
2.4
-
-
-
-
0.8
V
V
High-Level Output Voltage
(Except TXP/N pins: Iout=-400A)
(TXP/N pins: Iout= -8mA)
Low-Level Output Voltage
(Except TXP/N pins: Iout= 400A)
(TXP/N pins: Iout= 8mA)
VOH
VOH
VOL
VOL
VDD-1.0
VDD-0.8
-
-
-
-
-
-
-
-
0.4
0.6
V
V
V
V
Input Leakage Current
Iin
-
-
10
A
Notes:
4. Power supply current (IDD) is 3mA(typ)@fs=48kHz and 9mA(typ)@fs=192kHz.
IDD increases by 20mA(typ) with professional output driver circuit.
IDD is 350
A(typ) if PDN pin = "L", TRANS pin = "H" and all other input pins except internal pull-up/pull-down
pins are held to VSS.
PDF 
ZIP
