PM5380-BI PMC-Sierra, Inc., PM5380-BI Datasheet - Page 321

• 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 0x1019: TUL3 Channel #0, #4 Mode Configuration
PATM[4, 0]:
FIFORST[4, 0]:
Reserved:
The PATM registers configure channels #0 and #4 for ATM or packet operation during
POS-PHY Level 3 operation in the transmit direction. When POS_ATMB is high and
PATM is low, the channel is configured for packet data over the POS-PHY Level 3
interface. When POS_ATMB is high and PATM is high, the channel is configured for ATM
cells over the POS-PHY Level 3 interface.
When POS_ATMB is low, PATM must be set low.
The FIFORST registers are used to reset channels #0 and #4 two cell/256 byte transmit
FIFOs. When FIFORST is set to logic zero, the FIFO operates normally. When FIFORST
is set to logic one, the FIFO is immediately emptied and ignores writes. The buffer remains
empty and continues to ignore writes until a logic zero is written to FIFORST.
The channel FIFORST registers in the TXCP and TXFP must be set high before FIFORST
is asserted. The channel FIFORST registers must be set low after FIFORST is deasserted.
The reserved bits must be programmed to ‘1’ for proper operation.
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
Function
Reserved
Reserved
FIFORST[4]
FIFORST[0]
Unused
Unused
PATM[4]
PATM[0]
S/UNI®-8x155 ASSP Telecom Standard Product Data Sheet
Default
0
0
0
0
0
0
Released
321