PM4328 datasheet(40/250 Pages) PMC

40 / 250 page

STANDARD PRODUCT

PM4328 TECT3

DATASHEET

PMC-2011596

ISSUE 1

HIGH DENSITY T1/E1 FRAMER

AND M13 MULTIPLEXER

PROPRIETARY AND CONFIDENTIAL

Pin Name

Type

No.

Function

TPOS/TDAT

Output AB7 Transmit Positive Pulse (TPOS). TPOS represents

the positive pulses transmitted on the B3ZS-encoded

DS3 line when dual-rail output format is selected.

Transmit Data Output (TDAT). TDAT represents the

NRZ (unipolar) DS3 output data stream when single

rail output format is selected.

TPOS and TDAT are updated on the falling edge of

TCLK by default but may be enabled to be updated on

the rising edge of TCLK by setting the TRISE bit in the

DS3 Master Transmit Line Options register. TPOS and

TDAT are updated on TICLK rather than TCLK when

the TICLK bit in the DS3 Master Transmit Line Options

TNEG/TMFP

Output W6 Transmit Negative Pulse (TNEG). TNEG represents

the negative pulses transmitted on the B3ZS-encoded

DS3 line when dual-rail output format is selected.

Transmit Multiframe Pulse (TMFP). This signal

marks the transmit M-frame alignment when

configured for single rail operation. TMFP indicates

the position of overhead bits in the transmit

transmission system stream, TDAT. TMFP is high

during the first bit (X1) of the multiframe.

TNEG and TMFP are updated on the falling edge of

TCLK by default but may be enabled to be updated on

the rising edge of TCLK by setting the TRISE bit in the

DS3 Master Transmit Line Options register. TNEG and

TMFP are updated on TICLK rather than TCLK when

the TICLK bit in the DS3 Master Transmit Line Options

TICLK

Input

AA6 Transmit input clock (TICLK). TICLK provides the

transmit direction timing. TICLK is nominally a 44.736

MHz, 50% duty cycle clock.

This clock is only required when using the DS3

transmitter with the DS3 line side interface. When not

used this clock input should be connected to ground.

PM4328 Datasheet(PDF) 40 Page - PMC-Sierra, Inc

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