PM5350-1 Datasheet, PDF (131/196 Pages) PMC-Sierra, Inc – SATURN USER NETWORK INTERFACE

DATA SHEET
PMC-960924
ISSUE 5
PM5350 S/UNI-ULTRA
SATURN USER NETWORK INTERFACE
Register 0x61: TACP Idle/Unassigned Cell Header Pattern
Bit
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Type
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Function
GFC[3]
GFC[2]
GFC[1]
GFC[0]
PTI[2]
PTI[1]
PTI[0]
CLP
Default
0
0
0
0
0
0
0
0
GFC[3:0]:
The GFC[3:0] bits contain the first, second, third, and fourth bit positions of
the first octet of the idle/unassigned cell pattern. Cell rate decoupling is
accomplished by transmitting idle/unassigned cells when the TACP detects
that no outstanding cells exist in the transmit FIFO. The all zeros pattern is
transmitted in the VCI and VPI fields of the idle cell.
PTI[3:0]:
The PTI[3:0] bits contain the fifth, sixth, and seventh bit positions of the fourth
octet of the idle/unassigned cell pattern. Idle cells are transmitted when the
TACP detects that no outstanding cells exist in the transmit FIFO.
CLP:
The CLP bit contains the eighth bit position of the fourth octet of the
idle/unassigned cell pattern. Idle cells are transmitted when the TACP detects
that no outstanding cells exist in the transmit FIFO.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE 119