PM5366-PI PMC-Sierra, Inc., PM5366-PI Datasheet - Page 225

• 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
transport envelope and the alignment is changing for two of the STS-1 SPEs
(STS-1 #2 and #3) due to the pointer justification events shown.
Figure 53
LDDATA[7:0]
The LDV5 and LDTPL signals are optional when using the ingress VTPP within
the TEMAP-84 which will regenerate the LDV5 and LDTPL signals from
LDC1J1V1, LDPL and the pointers within LDDATA[7:0]. In order to bypass the
ingress VTPP, the data on the Telecom drop bus must be locked such that all
three STS-1 SPEs are aligned to the STS-3 transport envelope with the J1 bytes
immediately following the C1 bytes. This is shown in Figure 54.
LREFCLK
LDTPL
LDC1J1
LDV5
LDPL
- Telecom DROP Bus Timing - STS-1 SPEs / AU3 VCs
STS-1 #1 SPE J1 byte
A1
A1 A1 A2 A2 A2 C1 C1 C1
ISSUE 1
INVALID
INVALID
Last H4 byte in
tributary multiframe
Any V1 - V4 byte
TU#1, STS-1 #1
J1
C2
H4 Vx
213
Negative stuff for STS-1 #2
SPE which happens to
carry a non-final H4 byte
••••
Positive stuff for STS-1 #3 SPE
HIGH DENSITY 84/63 CHANNEL VT/TU MAPPER
H1
V5 byte as marked by OTV5
H1 H1 H2 H2 H2 H3
INVALID
INVALID
AND M13 MULTIPLEXER
PM5366 TEMAP-84
H4
IV
H3
IV
G1
IV
IV
V5