參數(shù)資料
型號(hào): AK2305
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: Dual PCM CODEC for ISDN TERMINAL ADAPTER
中文描述: 雙PCM編解碼器的ISDN終端適配器
文件頁數(shù): 12/43頁
文件大?。?/td> 481K
代理商: AK2305
ASAHI K ASEI [AK 2305]
C0029-E-02 12 1999/8
GCI(General Circuit Interface)
Interface used for ISDN. This data format is as below.
PCM data channel assignment for B1 and B2 is defined by SEL2B register.
CH0,1selection
SEL2B
CH0
CH1
Remarks
0
B1
B2
Reset
1
B2
B1
Note: BCLK is twice the PCM data rate.
BCLK is acceptable from 512kHz to 4096kHz.
INTERFACE TIMING
<2ch Multiplex>
PCM data of each channel is interfaced through DR0/DX0 pin in 8bits format.
They are accommodated in 1 frame(125us) which synchronizes with FS0.
1
2
3
4
FS0
7
8
DX0
DR0
5
6
BCLK
1
2
3
4
7
8
5
6
1
2
3
4
7
8
5
6
1
2
3
4
7
8
5
6
Don’t
care
Don’t
care
B1-CHANNE L(CH0)
<SE L2B=”0”>
B2-CHANNE L(CH1)
<SE L2B=”0”>
<Non Multiplex>
Not supported.
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