S/UNI®-ATLAS-3200 Telecom Standard Product Data Sheet
Preliminary
The bits in this register are write enables. When a write access is requested via the VC Table
Access Control Register, then those fields which have their write enable set to logic 1 will be
altered by the write, and those which have their write enable set to logic 0 will retain their
previous values The fields correspond to the fields described in Table 8, the VC Record Table.
Unused_1 and Unused_3 refer to the reserved bits in Row1 and Row 3 respectively; the Reserved
bit should always be programmed to logic 0 for proper operation, because it controls writing to
(as opposed to automatic generation of) CRC-10 for the VC Record table. The Wr_Bwds_VCRA
bit also controls the writing of the two reserved bits adjacent to the Bwds_VCRA field.
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-1990553, Issue 4
230
PMC [ PMC-SIERRA, INC ]
