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參數(shù)資料
| 型號： | AK4545 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類： | Codec |
| 英文描述： | AC97 AUDIO CODEC WITH SRC AND DIT |
| 中文描述： | AC97聲音解碼器與SRC和DIT |
| 文件頁數(shù)： | 18/33頁 |
| 文件大?。?/td> | 363K |
| 代理商： | AK4545 |
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[ASAHI KASEI] [AK4545]
MS0058-E-00
2000/11
- 18 -
n
S/PDIF output
a) Electrical Characteristics
Same as other digital output pins (CMOS level).
S/PDIFout pin is supposed to be connected to optical component only.
b) Outline of S/PDIF Spec.
(1) The channel status of the AK4545 supports consumer mode only. The AK4545 has three-16 bit registers
which keep Copyrights-bit, Category-code bits, Generation-bit, etc. These bits can be changed through AC-
link I/F.
(2) SDATA_IN data or SDATA_OUT data is encoded to appropriate bi-phase signal by internal digital audio
transmitter (DIT) circuit, and is output through S/PDIFout pin. One of the following audio data streams can
be selected as the input signal to DIT circuit by the setting of internal register.
(a) D/A data from SDATA_OUT (slot3/4)
(b) A/D data to SDATA_IN (slot 3/4)
(c) Slot 7/8 data from SDATA_OUT (In this case, we assume that slot7/8 is original AC-3 encoded data,
and that slot 3/4 is down-mixed AC-3 audio data Therefore, the device supposes data rate of slot 7/8
and slot 3/4 to be same and to be 48kHz. )
(3) Even if A/D and D/A sampling frequency (fs) are different, S/PDIFout circuit works correctly.
AK4545
AC-Link
Interface
BIT_CLK
SYNC
SDATA_OUT
SDATA_IN
RESET#
ADC
DAC
S/PDIF
Out
S/PDIF OUT
FIFO
for D/A
FIFO
for A/D
ASLT
IO
IO
DA CLK
AD CLK
Data of Slot3,4
Data of Slot7,8
I/O
0
0
1
ASLT
0
1
X
Data Select
SDATA_OUT : slot 3, 4
SDATA_OUT : slot 7, 8 Note
SDATA_IN : slot 3, 4
Note) DAC rate and S/PDIF rate should be same (48kHz).
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AK4545VQ | AC97 AUDIO CODEC WITH SRC AND DIT |
| AK4551 | LOW POWER & SMALL PACKAGE 20BIT CODEC |
| AK4551VT | LOW POWER & SMALL PACKAGE 20BIT CODEC |
| AK4554 | Low Power & Small Package 16bit ツヒ CODEC |
| AK4554VT | Low Power & Small Package 16bit ツヒ CODEC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK4545VQ | 制造商:AKM 制造商全稱:AKM 功能描述:AC97 AUDIO CODEC WITH SRC AND DIT |
| AK4550 | 制造商:AKM 制造商全稱:AKM 功能描述:EVALUATION BOARD REV.C FOR AK4550 |
| AK4550VT | 制造商:AKM 制造商全稱:AKM 功能描述:LOW POWER & SMALL PACKAGE 16BIT CODEC |
| AK4550VT-E2 | 制造商:Asahi Kasei Microsystems Co Ltd 功能描述: |
| AK4550VTP-E2 | 制造商:Asahi Kasei Microsystems Co Ltd 功能描述:16BIT 3V |
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