PM5364 pmc-sierra, PM5364 Datasheet - Page 136

• Manufacturer Part Number: PM5364
• Description: Tupp 2488 Assp Telecom Standard
• Manufacturer: pmc-sierra

10.10.1
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2011334, Issue 7
Latency for the Different Modes of Operation
Device latency estimates assume the following:
•
•
•
SVCA
System Egress Receive CML
glue, RILC, RSEF
align FIFO
tim_fifo
SERDES
System Ingress Transmit CML
glue, TILC, TSEC
tim_fifo
SERDES
Line Ingress Receive CML
glue
SERDES
RSEF
align_fifo
RSEF
dmux FIFO
Line Egress Transmit CML
glue
SERDES
tim_fifo
TSEC
Mux FIFO
tim_fifo
TSEC
Mux FIFO
RASIO™ CML (777/622) is being used on the line side. If line ingress uses parallel bus in,
latency figures are reduced by 0.488 µs in the ingress path. If line egress uses parallel out,
latency figures are reduced by 0.257 µs in the egress path.
STSI blocks are switching giving STSI subsystems 206 ns latency.
Figures quoted for VT-level traffic are for VT1.5 as this is the worst case.
Mode
all modes 91
all modes 15
all modes 1
all modes 1
all modes 1
all modes 12
all modes 1
all modes 1
all modes 1
all modes 1
777/622
777/622
2488
2488
all modes 1
777/622
777/622
777/622
2488
2488
2488
Min No. of
Clocks
11
5
11
5
2
1
8
0
1
8
1
TUPP™ 2488 ASSP Telecom Standard Product Data Sheet
Nom No. of
Clocks
175
15
8
4
2
12
4
2
1
2
11
21
11
121
2
2
4
8
0
4
8
4
37
8
Max No. of
Clocks
257
15
16
8
2
12
8
2
1
2
11
11
37
2
2
8
8
0
8
8
Notes
Depends on
alignment FIFO
configurable
311MHz clock
Depth user
configurable
311MHz clock
311MHz clock
311MHz clock
Depth user
Released
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