PM73121ꢀAAL1gator II
Data Sheet
PMC-Sierra, Inc.
PMC-980620
,VVXHꢀꢁ
AAL1 SAR Processor
2.8.3.1 SDF-MF Mode
MACGT
= [208 + (8 × K)] × L
SDFMF
2.8.3.1.1 For E1 Mode
TCGTSDFMFE1 = MACGTSDFMF × (8000 × N × 33 ÷ 32) ÷ K
If all queues are E1 SDF-MF and the same size, all timeslots are used, and SYS_CLK= 38.88
MHz, then the minimum number of bytes per cell is 20.
2.8.3.1.2 For T1 Mode
TCGT SDFMFT1 = MACGTSDFMF × (8000 × N × 49 ÷ 48) ÷ K
If all queues are T1 SDF_MF the same size, all timeslots are used, and SYS_CLK= 38.88 MHz,
then the minimum number of bytes per cell is 13.
2.8.3.2 SDF-FR Mode
MACGT
= [202 + (8 × K)] × L
SDFFR
TCGTSDFFR = MACGTSDFFR × (8000 × N) ÷ K
For E1 mode, if all queues are the same size, all timeslots are used, and SYS_CLK= 38.88 MHz,
then the minimum number of bytes per cell is 19.
For T1 mode, if all queues are the same size and all timeslots are used and SYS_CLK= 38.88
MHz, then the minimum number of bytes per cell is 12.
2.8.3.3 UDF-ML Mode
MACGT
= [202 + (4 × K)] × L
UDFML
TCGTUDFML = MACGTUDFML × (8000 × 32) ÷ K
If all queues are unstructured and all lines are used and SYS_CLK= 38.88 MHz, then the mini-
mum number of bytes per cell is 14.
The sum of TCGT
+ TCGT
+ TCGT
+ TCGT for all queues +
UDFML
SDFMFE1
SDFMFT1
SDFFR
TCGT
must be less than 1 second.
OAM
ꢁꢂ
PMC [ PMC-SIERRA, INC ]
