PM7347 datasheet(305/341 Pages) PMC

305 / 341 page

S/UNI®-JET Data Sheet

Released

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

305

Document ID: PMC-1990267, Issue 3

Figure 49 Transmit Bipolar J2 Stream

TCLK

B8ZSsignature

0 V

000

10 0 0

00 0

TNEG

TPOS

TICLK

The Transmit Bipolar J2 Stream diagram (Figure 49) illustrates the generation of a bipolar J2

stream. The B8ZS encoded J2 stream is present on TPOS and TNEG. These outputs, along with

the transmit clock, TCLK, can be directly connected to a J2 line interface unit. Note: TCLK is a

flow through version of TICLK; a variable propagation delay exists between these two signals.

Figure 50 Transmit Unipolar J2 Stream

TCLK

TDATO

bit 782

bit 783

bit 784

TOHM

frame alignment signal

bit1

bit 2

bit 3

TICLK

The Transmit Unipolar J2 Stream diagram (Figure 50) illustrates the unipolar J2 stream

generation. The ATM cell stream, along with valid J2 overhead bits is contained in TDATO. The

TOHM output shown marks the J2 multi-frame boundary (the first frame-alignment bit of each J2

multi-frame) in the transmit stream. Note: TCLK is a flow through version of TICLK; a variable

propagation delay exists between these two signals.

PM7347 Datasheet(PDF) 305 Page - PMC-Sierra, Inc