S/UNI®-ATLAS-3200 Telecom Standard Product Data Sheet
Preliminary
Register 0x038: Output Backwards Cell Interface Configuration
Bit
31:5
4
3
2
Type
Function
Unused
CALEVEL0
Reserved
OBCIF_EVEN_PRTY
Reserved
Default
X
0
0
0
0
1
R/W
R/W
R/W
R/W
R/W
1
0
OBCIFRST
CALEVEL0
If CALEVEL0 is logic 1, BO_CLAV is deasserted after the last word of the FIFO is
transferrred (i.e. the FIFO is empty). If CALEVEL0 is logic 0, then BO_CLAV is deasserted
4 words before the end of the last cell to indicate that the Output BCIF cannot transfer
another cell.
OBCIFRST
The OBCIFRST bit is used to reset the 16-cell Output Backwards Cell Interface FIFO. When
OBCIFRST is set to logic zero, the FIFO operates normally. When OBCIFRST is set to logic
one, the FIFO is immediately emptied and ignores reads and writes. The FIFO remains
empty and continues to ignore reads and writes until a logic zero is written to OBCIFRST.
N.B. This FIFO must be reset at startup.
OBCIF_EVEN_PRTY
When this bit is logic 1, the BO_PAR pin completes even parity for the BO_DAT[15:0] bus.
When it is logic 0, the BO_PAR pin completes odd parity for the BO_DAT[15:0] bus.
Reserved
The reserved bits must be programmed to logic 0 for correct operation.
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-1990553, Issue 4
180