PM5366-PI datasheet(104/267 Pages) PMC

104 / 267 page

PRELIMINARY

PM5366 TEMAP-84

DATASHEET

PMC-2010672

ISSUE 1

HIGH DENSITY 84/63 CHANNEL VT/TU MAPPER

AND M13 MULTIPLEXER

PROPRIETARY AND CONFIDENTIAL

LOS, OOF or AIS. The E3-FRMR can also be enabled to automatically insert

G.832 FEBE upon detection of receive BIP-8 errors.

9.20 E3 Transmitter

Three E3 transmitters provide framing insertion for 34368 kbit/s unchannelized

data from TDATI[3:1] or the SBI bus.

The E3 Transmitter (E3-TRAN) Block integrates circuitry required to insert the

overhead bits into an E3 bit stream and produce an HDB3-encoded signal. The

E3-TRAN is directly compatible with the G.751 and G.832 framing formats.

The E3-TRAN generates the frame alignment signal and inserts it into the

incoming serial stream based on either the G.751 or G.832 formats. All overhead

and status bits in each frame format can be individually controlled by register

bits. While in certain framing format modes, the E3-TRAN generates various

overhead bytes according to the following:

In G.832 E3 format, the E3-TRAN:

• inserts the BIP-8 byte calculated over the preceding frame;

• inserts the Trail Trace bytes;

• inserts the FERF bit via a register bit or, optionally, when the E3-FRMR declares

OOF, or when the loss of cell delineation (LCD) defect is declared;

• inserts the FEBE bit, which is set to logic 1 when one or more BIP-8 errors are

detected by the receive framer. If there are no BIP-8 errors indicated by the

E3-FRMR, the E3-TRAN sets the FEBE bit to logic 0;

• inserts the Payload Type bits based on the register value set by the

microprocessor;

• inserts the Tributary Unit multiframe indicator bits either via the TOH overhead

stream or by register bit values set by the microprocessor;

• inserts the Timing Marker bit via a register bit;

• inserts the Network Operator (NR) byte from the TDPR block when the TNETOP

bit in the E3 Data Link Control register is logic 1; otherwise, the NR byte is set to

all ones. All 8 bits of the Network Operator byte are available for use as a

datalink;

PM5366-PI Datasheet(PDF) 104 Page - PMC-Sierra, Inc