PM5366-PI PMC-Sierra, Inc., PM5366-PI Datasheet - Page 104

• Manufacturer Part Number: PM5366-PI
• Description: HIGH DENSITY 84/63 CHANNEL VT/TU MAPPER AND M13 MULTIPLEXER
• Manufacturer: PMC-Sierra, Inc.

PRELIMINARY
DATASHEET
PMC-2010672
9.20 E3 Transmitter
PROPRIETARY AND CONFIDENTIAL
• 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
• inserts the FEBE bit, which is set to logic 1 when one or more BIP-8 errors are
• inserts the Payload Type bits based on the register value set by the
• inserts the Tributary Unit multiframe indicator bits either via the TOH overhead
• inserts the Timing Marker bit via a register bit;
• inserts the Network Operator (NR) byte from the TDPR block when the TNETOP
LOS, OOF or AIS. The E3-FRMR can also be enabled to automatically insert
G.832 FEBE upon detection of receive BIP-8 errors.
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:
OOF, or when the loss of cell delineation (LCD) defect is declared;
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;
microprocessor;
stream or by register bit values set by the microprocessor;
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;
ISSUE 1
92
HIGH DENSITY 84/63 CHANNEL VT/TU MAPPER
AND M13 MULTIPLEXER
PM5366 TEMAP-84