CS8422-DNZR データシートの表示（PDF） - Cirrus Logic
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CS8422-DNZR Datasheet PDF : 82 Pages
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CS8422
boxes held to the same potential, and the cable shield might be depended upon to make that electrical con-
nection. Generally, it is a good idea to provide the option of grounding or capacitively coupling the shield to
the chassis.
XLR
110
Twisted
Pair
1
* See Text
110
CS8422
RXP
RXN
Figure 26. Professional Input Circuit – Differential
Mode
XLR
110
Twisted
Pair
1
* See Text
0.01 F
110
0.01 F
CS8422
RXP0
RXN0
Figure 27. Transformerless Professional Input Cir-
cuit – Differential Mode
75
Coax
75
Coax
75
Coax
75
75
75
.01F
.01F
.01F
CS8422
RX3
RX... 2
RX0
Figure 28. S/PDIF MUX Input Circuit – Single-Ended
75
Coax
RCA Phono
75
0.01 F
CS8422
RXP
0.01 F
RXN
Figure 29. Receiver Mode 1 Single-Ended Input
Circuit – Differential Mode
TTL/CMOS
CS8422
RX3
TTL/CMOS
0.01 F
CS8422
RXP
RX0
0.01F
RXN
Figure 30. S/PDIF MUX Input Circuit – Digital Mode
Figure 31. TTL/CMOS Input Circuit – Differential
Mode
12.3.1 Attenuating Input signals
The input signals to the RX, RXP, and RXN pins in all modes of operation are limited to amplitudes equal
to, or less than +3.3 V. In some cases it may be necessary to attenuate the input signal so the input to the
device is within the valid operating range. Figures 32 and 33 illustrate how this should be done for both sin-
gle-ended and differential inputs. In both cases, equations (1) and (2) must be satisfied simultaneously.
DS692F1
65
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