PM7347 datasheet(136/341 Pages) PMC

136 / 341 page

S/UNI®-JET Data Sheet

Released

Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use

136

Document ID: PMC-1990267, Issue 3

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.

PM7347 Datasheet(PDF) 136 Page - PMC-Sierra, Inc