PM7346 datasheet(80/419 Pages) PMC

80 / 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 59

• the FERF bit and indicates an alarm when the FERF bit is a logic 1 for 3 or 5

consecutive frames. The FERF indication is removed when the FERF bit is a

logic 0 for 3 or 5 consecutive frames;

• the FEBE bit and outputs it for accumulation in PMON;

• the Payload Type bits and buffers them so that they can be read by the

microprocessor;

• the Timing Marker bit and asserts the Timing Marker indication when the

value of the extracted bit has been in the same state for 3 or 5 consecutive

frames;

• the Network Operator byte and presents it as a serial stream for further

processing by the RDLC block when the RNETOP bit in the S/UNI-QJET

Data Link and FERF Control register is logic 1. The byte is also brought out

on the ROH[x] output with an associated clock on ROHCLK[x]. All 8 bits of

the Network Operator byte are extracted and presented on the overhead

output and, optionally, presented to the RDLC.

• the General Purpose Communication Channel byte and presents it to the

RDLC when the RNETOP bit in the S/UNI-QJET Data Link and FERF Control

associated clock on ROHCLK[x].

In G.751 E3 mode, the E3-FRMR extracts:

• the Remote Alarm Indication bit (bit 11 of the frame) and indicates a Remote

Alarm when the RAI bit is a logic 1 for 3 or 5 consecutive frames. Similarly,

the Remote Alarm is removed when the RAI bit is logic 0 for 3 or 5

consecutive frames;

• the National Use reserved bit (bit 12 of the frame) and presents it as a serial

stream for further processing in the RDLC when the RNETOP bit in the

S/UNI-QJET Data Link and FERF Control register is logic 0. The bit is also

brought out on the ROH[x] output with an associated clock on ROHCLK[x].

Optionally, an interrupt can be generated when the National Use bit changes

state.

Further, while in-frame, the E3-FRMR indicates the position of all the overhead

bits in the incoming digital stream to the ATMF/SPLR block. For G.751 mode, the

tributary justification bits can optionally be identified as either overhead or

payload for payload mappings that take advantage of the full bandwidth.

PM7346 Datasheet(PDF) 80 Page - PMC-Sierra, Inc