參數(shù)資料
型號: AK4641
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: 16 BIT CODEC WITH BLUETOOTH INTERFACE
中文描述: 16位編解碼器與藍(lán)牙接口
文件頁數(shù): 13/51頁
文件大?。?/td> 461K
代理商: AK4641
ASAHI KASEI
[AK4641]
MS0301-E-00
2004/05
- 20 -
Audio Interface Format of Mono CODEC
Four types of data formats are available for 16bit Mono CODEC and are selected by setting the BTFMT1-0 bits. In all
modes, the serial data is MSB first, 2’s complement format. In short frame sync and long frame sync modes, the BSDTO
is clocked out on the rising edge of BBICK and the BSDTI is latched on the falling edge. In MSB justified and I
2S modes,
the BSDTO is clocked out on the falling edge of BBICK and the BSDTI is latched on the rising edge. BSYNC and
BBICK must be input to the AK4641.
Mode
BTFMT1-0
BBICK
Figure
Short Frame Sync
00
≥ 16Bfs
Figure 17
Default
Long Frame Sync
01
≥ 16Bfs
Figure 18
MSB justified
10
≥ 32Bfs
Figure 19
I
2S
11
≥ 32Bfs
Figure 20
Table 6. Audio Interface Format for 16bit Mono CODEC
(1) Short Frame Sync
BSDTI
BSDTO
BBICK
BSYNC
D13 D12 D11 D10 D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
D13 D12 D11 D10 D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Don’t Care
D15 D14
1/Bfs
D15 D14
Figure 17. Timing of Short Frame Sync
(2) Long Frame Sync
Don’t Care
BSDTI
BSDTO
BBICK
BSYNC
D13 D12 D11 D10 D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
D13 D12 D11 D10 D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Don’t Care
D15 D14
1/Bfs
D13
D15 D14
Figure 18. Timing of Long Frame Sync
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