PM7346 datasheet(178/419 Pages) PMC

178 / 419 page

PM7346 S/UNI-QJET

DATASHEET

PMC-960835

ISSUE 6

SATURN QUAD USER NETWORK INTERFACE FOR J2, E3, T3

PMC-SIERRA, INC. PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA INC., AND ITS CUSTOMERS’ INTERNAL USE 157

CBITV:

The CBITV bit indicates the application identification channel (AIC) state.

CBITV is set to logic 1 (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 0 (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 1, the DS3 FRMR frame alignment acquisition circuitry

has been out of frame for 2.23ms (or for 13.5ms when FDET is logic 0).

When the REDV bit is logic 0, 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 x31H, and is only accessible when the ACE bit is set to

logic 1. When ACE is set to logic 0, the Interrupt Enable register is accessible

at address x31H.

PM7346 Datasheet(PDF) 178 Page - PMC-Sierra, Inc