參數(shù)資料
型號: AK4589VQ
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: 2/8-Channel Audio CODEC with DIR
中文描述: 2/8-Channel音頻編解碼器迪爾
文件頁數(shù): 49/76頁
文件大?。?/td> 838K
代理商: AK4589VQ
ASAHI KASEI
[AK4589]
MS0339-E-00
2004/09
- 49 -
Biphase signal input/output circuit
RX
AK4589
0.1uF
75
Coax
75
Figure 23. Consumer Input Circuit (Coaxial Input)
Note: In case of coaxial input, if a coupling level to this input from the next RX input line
pattern exceeds 50mV, there is a possibility to occur an incorrect operation. In this case, it is
possible to lower the coupling level by adding this decoupling capacitor.
RX
AK4589
470
O/E
Optical Receiver
Optical
Fiber
Figure 24. Consumer Input Circuit (Optical Input)
In case of coaxial input, as the input level of RX line is small, in Serial Mode, be careful not to crosstalk among RX input
lines. For example, by inserting the shield pattern among them. In Parallel Mode, only one channel input (RX1) is
available and RX2-4 change to other pins for audio format control. Those pins must be fixed to “H” or “L”.
The AK4589 includes the TX output buffer. The output level meets combination 0.5V+/-20% using the external resistor
network. The T1 in Figure 25 is a transformer of 1:1.
TX
DVSS
100
±
2%
T1
75
cable
330
±
2%
Figure 25. TX External Resistor Network
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