HC-5560_03 Datasheet, PDF (9/10 Pages) Intersil Corporation – PCM Transcoder

Timing Waveforms (Continued)
HC-5560
CLK DEC
AMI A_IN
B_IN
NRZ DATA OUT
HDB3 A_IN
B_IN
NRZ DATA OUT
B6ZS A_IN
B_IN
NRZ DATA OUT
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
B8ZS A_IN
B_IN
NRZ DATA OUT
4 CYCLES
6 CYCLES
8 CYCLES
S
S
S
S
S
S
S
S
FIGURE 7. DECODE TIMING AND DELAY
Data that appears on A_IN and B_IN is clocked by the positive edge of CLK DEC, decoded, and zeros are inserted for all valid line
code substitutions. The data then appears in non-return to zero to zero form at output NRZ Data Out. A_IN and B_IN are
interchangeable.
CLK DEC
A_IN
B_IN
NRZ DATA
OUT
ERROR
E
EE
FIGURE 8.
The ERROR signal indicates bipolar violations that are not part of a valid substitution.
S
S
S
S
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