PM5366-PI datasheet(192/267 Pages) PMC

192 / 267 page

PRELIMINARY

PM5366 TEMAP-84

DATASHEET

PMC-2010672

ISSUE 1

HIGH DENSITY 84/63 CHANNEL VT/TU MAPPER

AND M13 MULTIPLEXER

PROPRIETARY AND CONFIDENTIAL

180

Table 23

- SBI T1/E1 Link Rate Information

SDC1FP

•• •

SREFCLK

•• •

T1/E1 CLK

•• •

Clock Count

Phase

Link Rate Octet

Bit #

5:4

3:0

T1/E1 Format

ALM

ClkRate[1:0]

Phase[3:0]

Table 24

- SBI T1/E1 Clock Rate Encoding

ClkRate[1:0]

T1 Clocks / 2KHz

E1 Clocks / 2 KHz

“00” – Nominal

772

1024

“01” – Fast

773

1025

“1x” – Slow

771

1023

The method for transferring DS3 link rate information across the SBI passes the

encoded count of DS3 clocks between 2KHz SAC1FP/SDC1FP pulses in the

same method used for T1/E1 tributaries, but does not pass any phase

information. The other difference from T1/E1 link rate is that ClkRate[1:0]

indicates whether the nominal number of clocks are generated or if four fewer or

four extra clocks are generated during the SAC1FP/SDC1FP period. The format

of the DS3 link rate octet is shown in Table 25. This is passed across the SBI via

the Linkrate octet which follows the H3 octet in the column, see Table 31. Table

26 shows the encoding of the clock count, ClkRate[1:0], passed in the link rate

octet.

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