PM5345 datasheet(34/196 Pages) PMC

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PM5345 S/UNI-155

DATA SHEET

PMC-930305

ISSUE 4

SATURN USER NETWORK INTERFACE

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

Pin Name

Type

No.

Function

TXCO+

TXCO-

Output

The transmit differential clock/negative pulse

outputs (TXCO+, and TXCO-) contain either

the transmit output clock or MLT-3 encoded

data when the bit serial interface is selected

(TSER is tied high).

When NRZ encoding is selected (FPOS/MLT is

tied low), TXCO+/- is a buffered version of

TXCI+/-. TXD+/- is updated on the falling edge

of TXCO+/-.

When MLT-3 encoding is selected (FPOS/MLT

is tied high), the TXCO+/- outputs contain the

negative pulses of the MLT-3 encoded stream.

POCLK

Output

The parallel output clock (POCLK) signal

provides timing for processing of the data that

is output by the S/UNI. POCLK is nominally a

19.44 MHz, 50% duty cycle clock. POCLK is a

buffered version of TCLK when the byte serial

interface is selected (TSER is tied low).

POCLK is a divide by eight of TXCI+/- when

the bit serial interface is selected (TSER is tied

high).

POUT[0]

POUT[1]

POUT[2]

POUT[3]

POUT[4]

POUT[5]

POUT[6]

POUT[7]

Output

158

159

160

The scrambled data output (POUT[7:0]) bus

carries data when the byte serial interface is

selected (TSER is tied low). POUT[7:0] is

updated on the rising edge of TCLK. POUT[7]

is the most significant bit (corresponding to bit

1 of each serial word, the first bit transmitted).

POUT[0] is the least significant bit

(corresponding to bit 8 of each serial word, the

last bit transmitted).

PM5345 Datasheet(PDF) 34 Page - PMC-Sierra, Inc

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