S/UNI®-JET Data Sheet
Released
CBITV
The CBITV bit indicates the application identification channel (AIC) state. CBITV is set to
logic one (indicating the presence of the C-bit parity application) when the AIC bit is set high
for 63 consecutive M-frames. CBITV is set to logic zero (indicating the presence of the M23
or SYNTRAN applications) when AIC is set low for 2 or more M-frames in the last 15.
REDV
The REDV bit indicates the current state of the DS3 RED indication. When the REDV bit is a
logic one, the DS3 FRMR frame alignment acquisition circuitry has been OOF for 2.23ms (or
for 13.5ms when FDET is logic zero). When the REDV bit is logic zero, the frame alignment
circuitry has found frame (i.e. OOFV=0) for 2.23ms ( or 13.5ms if FDET=0).
ACE
The ACE bit selects the Additional Configuration Register. This register is located at address
331H, and is only accessible when the ACE bit is set to logic one. When ACE is set to logic
zero, the Interrupt Enable Register is accessible at address 331H.
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-1990267, Issue 3
136
PMC [ PMC-SIERRA, INC ]
