LC89057W-VF4A-E
10.2.3 Bi-phase signal input circuits (RX0, RX1, RX2)
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If RX1 with a built-in amplifier is used as a coaxial input pin, malfunction may occur due to the influence from the
adjacent RX0 and RX2 input pins. To avoid the influences from those pins, fix RX0 and RX2 to "L".
When RX1 is selected and the input signal to RX1 is temporarily open because of AC coupling, the RX0 and RX2
potential must be fixed. In this case, there are 5 bi-phase signal input pins available, which are RX1 and RX3 to RX 6.
When RX1 is selected and the input signal to RX1 is always fixed to either "H" or "L", RX0 and RX2 processes are
not required. In this case, all 7 input pins can be used validly.
LC89057W-VF4A-E
0.1μF
RX0
Coaxial
RX1
RX2
RX3
RX4
RX5
RX6
75Ω
Optical
etc.
(a):Coaxial input circuit
Optical
LC89057W-VF4A-E
100Ω
RX0
RX1
RX2
RX3
RX4
Optical
etc.
RX5
RX6
(b):Optical input circuit
Figure 10.6 Bi-Phase Signal Input Circuits
No.7202-21/59
SANYO [ SANYO SEMICON DEVICE ]
