STANDARD PRODUCT
PM5365 TEMAP
DATASHEET
PMC-1991148
ISSUE 3
HIGH DENSITY VT/TU MAPPER
AND M13 MULTIPLEXER
1,28
2,28
3,28
34,62,90
100,184,268
101,185,269
102,186,270
34,62,90
34,62,90
Table 18
E1#
- E1/TVT2 Tributary Column Numbering
SPE1 Column SPE2 Column SPE3 Column
SBI Column
1,1
2,1
3,1
1,2
2,2
SSS
7,28,49,70
7,28,49,70
7,28,49,70
8,29,50,71
8,29,50,71
19,82,145,208
20,83,146,209
21,84,147,210
22,85,148,211
23,86,149,212
1,21
2,21
3,21
27,48,69,90
27,48,69,90
27,48,69,90
79,142,205,268
80,143,206,269
81,144,207,270
SBI Timing Master Modes
The TEMAP supports asynchronous SBI timing modes. Asynchronous modes
allow T1, E1, DS3 and transparent tributaries to float within the SBI structure to
accommodate differences in timing.
In Asynchronous modes timing is communicated across the Scaleable
Bandwidth Interconnect by floating data structures within the SBI. Payload
indicator signals in the SBI control the position of the floating data structure and
therefore the timing. When sources are running faster than the SBI the floating
payload structure is advanced by an octet be passing an extra octet in the V3
octet locations (H3 octet for DS3 mappings). When the source is slower than the
SBI bus, the floating payload is retarded by leaving the octet after the V3 or H3
octet unused. Both these rate adjustments are indicated by the SBI control
signals.
Transparent VTs (TVTs) can float in the SBI structure in two ways. The first
method uses valid V1 and V2 pointers to indicate positive and negative pointer
justifications. The second methods uses the SBI signals SDV5, SAV5, SDPL and
SAPL to indicate rate adjustments. In the DROP bus the TEMAP will always
provide both valid pointers with valid SDV5 and SDPL signals. On the SBI Add
Bus the TEMAP needs to be configured on a per tributary basis for either
transparent VT mode. Transparent VT operation is configured on a per tributary
basis via the ETVT and ETVTPTRDIS bits in the TTMP Tributary control
registers. Note that the SC1FPEN bit in Register 1209H (SONET/SDH Master
DS3 Clock Generation Control) must be set appropriately for TVT mode.
Proprietary and Confidential to PMC-Sierra, Inc. and for its Customers’ Internal Use
164
PMC [ PMC-SIERRA, INC ]
