PM7345 datasheet(83/306 Pages) PMC

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PM7345 S/UNI-PDH

DATA SHEET

PMC-931011

ISSUE 6

SATURN USER-NETWORK INTERFACE

PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE

Bit

Type

Function

Default

Bit 7

R/W

TICLK

Bit 6

R/W

8KREF

Bit 5

R/W

DLINV

Bit 4

R/W

RCLKINV

Bit 3

R/W

RPNINV

Bit 2

R/W

TUNI

Bit 1

R/W

TCLKINV

Bit 0

R/W

TPNINV

TPNINV:

The TPNINV bit provides polarity control for outputs TPOS/TDAT and

TNEG/TOHM. When a logic 0 is written to TPNINV, the outputs are not inverted.

When a logic 1 is written to TPNINV, the outputs are inverted. The TPNINV bit

setting does not affect the loopback data in diagnostic loopback.

TCLKINV:

The TCLKINV bit provides polarity control for output TCLK. When a logic 0 is

written to TCLKINV, TCLK is not inverted and outputs TPOS/TDAT and

TNEG/TOHM are updated on the falling edge of TCLK. When a logic 1 is written

to TCLKINV, TCLK is inverted and outputs TPOS/TDAT and TNEG/TOHM are

updated on the rising edge of TCLK.

TUNI:

The TUNI bit enables the S/UNI-PDH to transmit unipolar or bipolar DS3 or E3

data streams. When a logic 1 is written to TUNI, the S/UNI-PDH transmits

unipolar DS3 or E3 data on TPOS/TDAT. When TUNI is logic 1, the TNEG/TOHP

output indicates the start of the DS3 M-Frame (the X1 bit) or the start of the E3

frame (bit 1 of the frame). When a logic 0 is written to TUNI, the S/UNI-PDH

transmits B3ZS-encoded DS3 data or HDB3-encoded E3 data on TPOS/TDAT

and TNEG/TOHM.

RPNINV:

The RPNINV bit provides polarity control for inputs RPOS/RDAT and

RNEG/ROHM. When a logic 0 is written to RPNINV, the inputs are not inverted.

When a logic 1 is written to RPNINV, the inputs are inverted. The RPNINV bit

setting does not affect the loopback data in diagnostic loopback.

PM7345 Datasheet(PDF) 83 Page - PMC-Sierra, Inc

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