ak4589 AKM Semiconductor, Inc., ak4589 Datasheet - Page 49

• Manufacturer Part Number: ak4589
• Description: 2/8-channel Audio Codec With Dir
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
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.
MS0339-E-00
Biphase signal input/output circuit
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.
DVSS
Optical
Fiber
TX
Coax
75Ω
Optical Receiver
330±2%
Figure 23. Consumer Input Circuit (Coaxial Input)
Figure 24. Consumer Input Circuit (Optical Input)
Figure 25. TX External Resistor Network
O/E
100±2%
75Ω
- 49 -
0.1uF
470
T1
75Ω cable
RX
RX
AK4589
AK4589
[AK4589]
2004/09