PM5380-BI PMC-Sierra, Inc., PM5380-BI Datasheet - Page 328

• Manufacturer Part Number: PM5380-BI
• Description: Network Interface, SATURN User Network Interface (8x155) Telecom Standard Product
• Manufacturer: PMC-Sierra, Inc.

Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC- 2010299, Issue 2
Register 0x1022: RUL3 ATM Level 3 FIFO Configuration
CELLFORM:
The CELLFORM bits controls the length of receive Level 3 interface ATM cell structure.
When CELLFORM is low, the ATM cell structure is 56 bytes in size (14 RFCLK cycles)
and contains the HCS (H5) and HCS Control bytes. When CELLFORM is high, the ATM
cell structure is 52 bytes in size (13 RFCLK cycles) and does not contain the HCS and HCS
Control bytes.
The value of CELLFORM should be changed only when FIFORST is set high.
Bit
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Type
R/W
Function
CELLFORM
Unused
Unused
Unused
Unused
Unused
Unused
Unused
S/UNI®-8x155 ASSP Telecom Standard Product Data Sheet
Default
0
X
X
X
X
X
X
X
Released
328