參數(shù)資料
型號: 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): 17/43頁
文件大?。?/td> 481K
代理商: AK2305
ASAHI K ASEI [AK 2305]
C0029-E-02 17 1999/8
MUTE
PIN CONTROL
The output on each channel can be muted independently by pin control.
MUTEn
(n=0,1)
Operation
DXn pin
(n=0,1)
VRXn pin
(n=0,1)
Remarks
0
Normal
PCM data output
CODEC
analog output
1
Mute
High-Impedance
AGND*
*)TONE
avialable even if the mute
operates.
circuits
are
REGISTER CONTROL
The output on each channel can be muted independently by register control.
MTDXn
(n=0,1)
Operation
DXn pin
(n=0,1)
VRXn pin
(n=0,1)
Remarks
0
Normal
PCM data output
Reset
1
Mute
High-Impedance
CODEC
analog output*
(MUTE0,1pin=”0”)
*) MUTEn is given priority over MTDXn. Therefore, for instance, even when MTDXn is “1,” output of VRXn is
AGND if MUTEn=”1.”
<Example>
CH0 muted (MUTE0=”1,” MUTE1=”0,” MTDX0,1=”0” : GCI mode)
FS0
DX0
DR0
BCLK
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”>
VRX0 :
CODEC CH0 analog output is always at AGND level.
TONEGEN0,1output can be controlled by TNOE0,1 pin.
CODEC CH1 analog output is the signal converted from the PCM data of CH1 input through DR0 pin.
TONEGEN0,1 output can be controlled by TNOE0,1 pin.
VRX1 :
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