PM5347 datasheet(32/302 Pages) PMC

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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

TXD+

TXD-

Output

126

127

The transmit differential data outputs (TXD+, TXD-

) contain the transmit stream. TXD+/- is updated

on the falling edge of TXC+/-

TXC+

TXC-

Output

124

125

The transmit clock (TXC+, TXC-) outputs are

available when the transmit data rate is 51.84

Mbit/s. TXD+/- is updated on the falling edge of

TXC+ and on the rising edge of TXC-. When

STS-3c (STM-1) is selected, TXC+ is held low and

TXC- is held high.

TATP

Analog

114

This analog test point (TATP) is provided for

production test purposes. Connect this pin to

ground.

GROCLK

Output

187

The generated receive clock (GROCLK) is

nominally a 6.48 MHz or 19.44 MHz, 50% duty

cycle clock. Receive outputs that are timed from

the line are updated with timing aligned to

GROCLK.

When configured for receive clock recovery

(RBYP low), GROCLK is the recovered line clock

divided down by 8.

When receive clock recovery is bypassed (RBYP

high), GROCLK is equal to RRCLK+/- divided

down by 8.

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