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S/UNI-QUAD
PMC-Sierra, Inc.
PM5349 S/UNI-QUAD
DATASHEET
PMC-971239 ISSUE 6 SATURN USER NETWORK INTERFACE (155-QUAD)
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
98
Register 0x23: TLOP Transmit K2
Bit Type Function Default
Bit 7 R/W K2[7] 0
Bit 6 R/W K2[6] 0
Bit 5 R/W K2[5] 0
Bit 4 R/W K2[4] 0
Bit 3 R/W K2[3] 0
Bit 2 R/W K2[2] 0
Bit 1 R/W K2[1] 0
Bit 0 R/W K2[0] 0
K2[7:0]:
The K2[7:0] bits contain the value inserted in the K2 byte when the APSREG
bit in the TLOP Control Register is a logic one. K2[7] is the most significant
bit, corresponding to the first bit (bit 1) transmitted. K2[0] is the least
significant bit, corresponding to the last bit (bit 8) transmitted. The bits in this
register are double buffered so that register writes do not need to be
synchronized to SONET/SDH frame boundaries. The insertion of a new APS
code value is initiated by a write to the TLOP Transmit K1 Register. A
coherent APS code value is ensured by writing the desired K2 APS code
value to this register before writing the TLOP Transmit K1 Register.