PM5366-PI PMC-Sierra, Inc., PM5366-PI Datasheet - Page 200

• Manufacturer Part Number: PM5366-PI
• Description: HIGH DENSITY 84/63 CHANNEL VT/TU MAPPER AND M13 MULTIPLEXER
• Manufacturer: PMC-Sierra, Inc.

PRELIMINARY
DATASHEET
PMC-2010672
PROPRIETARY AND CONFIDENTIAL
DS3 information bits. Table 33 shows the DS3 multi-frame format that is packed
into the grey region of Table 31. In this table V5 indicates the V5 octet which is
also a stuff octet, R indicates a stuff octet and B indicates the 11 octet DS3
block. Each row in Table 33 is a DS3 multi-frame. The DS3 multi-frame stuffing
format is identical for 5 multi-frames and then an extra stuff octet after the V5
octet is added every sixth frame.
Table 32
Table 33
DS3 asynchronous timing is compensated via the H3 octet. DS3 link rate
adjustments are optionally passed across the SBI via the Linkrate octet. DS3
alarm conditions are optionally passed across the SBI bus via the Linkrate octet.
E3 Tributary Mapping
Table 34 shows a E3 tributary mapped within the first synchronous payload
envelope SPE1. The V5 indicator pulse identifies the V5 octet. The E3 framing
format does not follow an 8KHz frame period so the floating frame located by the
V5 indicator and shown in grey in Table 34, will jump around relative to the H1
frame on every pass. In fact the V5 indicator will be asserted two or three times
per H1 frame, as is shown by the second and third V5 octet in Table 34. The V5
indicator and payload signals indicate negative and positive rate adjustments
which are carried out by either putting a data byte in the H3 octet or leaving
empty the octet after the H3 octet.
V5
V5
V5
V5
V5
V5
Octet #
Data
4*R
4*R
4*R
4*R
4*R
5*R
8*B
8*B
8*B
8*B
8*B
8*B
RRRFIIII
- DS3 Block Format
- DS3 Multi-frame Stuffing Format
1
5*R
5*R
5*R
5*R
5*R
5*R
ISSUE 1
8*B
8*B
8*B
8*B
8*B
8*B
8*I
2
5*R
5*R
5*R
5*R
5*R
5*R
8*I
3
8*B
8*B
8*B
8*B
8*B
8*B
8*I
4
5*R
5*R
5*R
5*R
5*R
5*R
8*I
188
5
8*B
8*B
8*B
8*B
8*B
8*B
8*I
6
5*R
5*R
5*R
5*R
5*R
5*R
8*I
7
HIGH DENSITY 84/63 CHANNEL VT/TU MAPPER
8*B
8*B
8*B
8*B
8*B
8*B
8*I
8
5*R
5*R
5*R
5*R
5*R
5*R
8*I
9
8*B
8*B
8*B
8*B
8*B
8*B
8*I
10
AND M13 MULTIPLEXER
PM5366 TEMAP-84
5*R
5*R
5*R
5*R
5*R
5*R
8*I
11
8*B
8*B
8*B
8*B
8*B
8*B