S/UNI®-ATLAS-3200 Telecom Standard Product Data Sheet
Preliminary
Register 0x03A: OBCIF Read Cells Counter
Bit
31:24
Type
Function
Unused
Default
X
23:0
R
CCOUNT[23:0]
X
This register provides a count of all cells read out of the OBCIF FIFO.
CCOUNT[23:0]
A write to this register or the S/UNI-ATLAS-3200 Identity/Load Counts register loads this
register with the number of cells read out of by the OBCIF since the last such write, and
resets the internal counter to zero. The update is done in such a fashion that no events are
missed if a counter reset and a dropped cell occur simultaneously. During this transfer, the
TIP bit in the S/UNI-ATLAS-3200 Identity/Load Counts register will be logic 1. The
contents of this register are valid when the TIP bit returns to logic 0; however, another
transfer should not be requested for at least 100ns after TIP returns to 0. If this register is not
polled regularly, the count value will saturate at 0xFFFFFF
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-1990553, Issue 4
182
PMC [ PMC-SIERRA, INC ]
