PM7346 datasheet(42/419 Pages) PMC

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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 21

PIN DESCRIPTION

Pin Name

Type

Pin No.

Function

TPOS[4]

TPOS[3]

TPOS[2]

TPOS[1]

Output

Transmit Digital Positive Pulse

(TPOS[4:1]). TPOS[4:1] contains the

positive pulses transmitted on the B3ZS-

encoded DS3, HDB3-encoded E3, or

B8ZS-encoded J2 transmission system

when the dual-rail output format is

selected.

TDATO[4]

TDATO[3]

TDATO[2]

TDATO[1]

Transmit Data (TDATO[4:1]). TDATO[4:1]

contains the transmit data stream when

the single-rail (unipolar) output format is

enabled or when a non-DS3/E3/J2 based

transmission system is selected.

The TPOS/TDATO[4:1] pin function

selection is controlled by the TFRM[1:0]

and the TUNI bits in the S/UNI-QJET

Transmit Configuration Registers. Output

signal polarity control is provided by the

TPOSINV bit in the S/UNI-QJET Transmit

Configuration Registers. Both TPOS[4:1]

and TDATO[4:1] are updated on the falling

edge of TCLK[4:1] by default, and may be

configured to be updated on the rising

edge of TCLK[4:1] through the TCLKINV

bit in the S/UNI-QJET Transmit

Configuration Registers. Finally, both

TPOS[4:1] and TDATO[4:1] can be

updated on the rising edge of TICLK[4:1],

enabled by the TICLK bit in the

S/UNI-QJET Transmit Configuration

Registers.

TNEG[4]

TNEG[3]

TNEG[2]

TNEG[1]

Output

Transmit Digital Negative Pulse

(TNEG[4:1]). TNEG[4:1] contains the

negative pulses transmitted on the B3ZS-

encoded DS3, HDB3-encoded E3, or

B8ZS-encoded J2 transmission system

when the dual-rail NRZ output format is

selected.

PM7346 Datasheet(PDF) 42 Page - PMC-Sierra, Inc

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