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PDF AK4103 Data sheet ( Hoja de datos )
| Número de pieza | AK4103 | |
| Descripción | 192kHz 24-Bit DIT | |
| Fabricantes | Asahi Kasei Microsystems | |
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ASAHI KASEI
[AK4103]
AK4103
192kHz 24-Bit DIT
GENERAL DESCRIPTION
The AK4103 is a digital audio transmitter(DIT) which supports data rate up to 192kHz sample rate
operation. The AK4103 encodes and transmits audio data according to the AES3, IEC60958, S/PDIF &
EIAJ CP1201 interface standards. The AK4103 accepts audio and digital data, which is then
multiplexed, encoded and driven on to a cable. The audio serial port is double buffered and supports
eight formats.
FEATURES
Sampling Rate up to 192kHz
Support AES3, IEC60958, S/PDIF & EIAJ CP1201 professional and consumer formats
Generates CRC codes and parity bits
On-chip RS422 line driver
16-byte on-chip buffer memory for Channel Status and User bits
Supports synchronous/asynchronous access to Channel Status and User bits
Supports multiple clock frequencies: 128fs, 256fs, 384fs and 512fs
Supports Left/Right justified and I2S audio formats
Easy to use 4 wire, Serial Host Interface
Audio Routing Mode (Transparent Mode)
Power supply: 4.75 to 5.25V
TTL level I/F
Small Package: 24pin VSOP
Temperature range of -10 to 70 °C
MS0077-E-02
-1-
2001/12
1 page  
ASAHI KASEI
[AK4103]
ABSOLUTE MAXIMUM RATINGS
(VSS=0V; Note 3)
Parameter
Symbol
min
Power Supply
VDD
-0.3
Input Current (All pins except supply pins)
IIN
-
Input Voltage
VIND
-0.3
Ambient Operating Temperature
Ta -10
Storage Temperature
Tstg -65
Notes:
3. All voltages with respect to ground.
max
6.0
±10
VDD+0.3
70
150
WARNING: Operation at or beyond these limits may results in permanent damage to the device.
Normal operation is not guaranteed at these extremes.
Units
V
mA
V
°C
°C
(VSS=0V; Note 1)
Parameter
Power Supply
RECOMMENDED OPERATING CONDITIONS
Symbol
VDD
min
4.75
typ
5.0
*AKM assumes no responsibility for the usage beyond the conditions in this datasheet.
max Units
5.25 V
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
VIH 2.4 - - V
Low-Level Input Voltage
VIL -
- 0.8 V
High-Level Output Voltage
(Except TXP/N pins: Iout=-400µA)
VOH VDD-1.0
-
-V
(TXP/N pins:
Iout= -8mA)
VOH VDD-0.8
-
-V
Low-Level Output Voltage
(Except TXP/N pins: Iout= 400µA)
VOL
-
- 0.4 V
(TXP/N pins:
Input Leakage Current
Iout= 8mA)
VOL
Iin
-
-
- 0.6 V
- ±10 µA
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 350µA(typ) if PDN= “L”, TRANS= “H” and all other input pins except internal pull-up/pull-down pins are
held to VSS.
MS0077-E-02
-5-
2001/12
5 Page 
ASAHI KASEI
[AK4103]
2. Synchronous Mode (hardware controlled)
The AK4103 when configured in synchronous mode accepts 16 - 24 bit audio samples through the audio serial port and
provides dedicated pins for the control data and allows all channel status, user data and validity bits to be serially input
through port pins. This data is multiplexed, the parity bit generated, and the bit stream is biphase-mark encoded and
driven through an RS422 line driver. The two set of channels have individual channel status and user data pins.
2-1. Audio Routing Mode (Transparent Mode)
The AK4103 can be configured in audio routing mode (transparent mode) by ANS=TRANS=1. In this mode, the
channel status(C), user data(U) and validity(V) bits must pass through unaltered. The Block Start(B) signal is configured
as an input, allowing the transmit block structure to be slaved to the block structure of the receiver. The C, U and V are
now transmitted with the current audio sample. In audio routing mode, no CRC bytes are generated and C bits pass
through unaltered. In audio routing mode, the FS0/CSN pin changes definition to AKMODE pin. When set “H” the
AK4103 can be configured directly with the AK4112A receiver. When set “L”, it may be used with other non-AKM
receivers. Setting the part with TRANS=1 and ANS=0 is illegal and places the chip into a test mode.
PIN Modes
ANS TRANS Synchronous/Asynchronous
Audio Routing
0 0 Asynchronous mode
Normal mode
01
10
11
Synchronous mode
(Test mode)
Normal mode
Audio routing mode
Source for C, U and V bits
C Pin ORed Control Register
U Pin ORed Control Register
V Pin ORed Control Register
C,U and V pin
Table 2. Mode setting
BLS
C (or U,V)
LRCK
(except I2S)
LRCK
(I2S)
SDTI
C(R191) C(L0) C(R0) C(L1)
C(L31) C(R31) C(L32)
R191 L0 R0 L1
L31 R31
Figure 1. Audio routing mode timing (AKMODE=0)
L32
MS0077-E-02
- 11 -
2001/12
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet AK4103.PDF ] | |
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