PM5347 datasheet(49/302 Pages) PMC

49 / 302 page

PM5347 S/UNI-PLUS

DATA SHEET

PMC-941033

ISSUE 6

SATURN USER NETWORK INTERFACE PLUS

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

Pin Name

Type

No.

Function

TPOHFP

Output

The transmit path overhead frame position

(TPOHFP) signal may be used to locate the

individual path overhead bits in the path overhead

data stream, TPOH. TPOHFP is logic one while

bit 1 (the most significant bit) of the path trace

byte (J1) is expected in the TPOH stream.

TPOHFP is updated on the falling edge of

TPOHCLK.

TOWCLK

Output

The transmit orderwire clock (TOWCLK) is a 64

kHz clock used to sample the TSOW, TSUC, and

TLOW inputs. TOWCLK is generated by gapping

a 72 kHz clock.

TSOW

Input

The transmit section orderwire (TSOW) signal

contains the section orderwire channel (E1)

inserted into the transmit stream. When not used,

this input should be connected to logic zero.

Overhead sourced using inputs TTOH and

TTOHEN takes precedence over overhead

sourced using TSOW. TSOW is sampled on the

rising edge of TOWCLK.

TSUC

Input

The transmit section user channel (TSUC) signal

contains the section user channel (F1) inserted

into the transmit stream. When not used, this

input should be connected to logic zero.

Overhead sourced using inputs TTOH and

TTOHEN takes precedence over overhead

sourced using TSUC. TSUC is sampled on the

rising edge of TOWCLK.

TLOW

Input

The transmit line orderwire (TLOW) signal

contains the line orderwire channel (E2) inserted

into the transmit stream. When not used, this

input should be connected to logic zero.

Overhead sourced using inputs TTOH and

TTOHEN takes precedence over overhead

sourced using TLOW. TLOW is updated on the

rising edge of TOWCLK.

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