PM5347 datasheet(41/302 Pages) PMC

номер детали	PM5347

подробное описание детали	SATURN USER NETWORK INTERFACE PLUS

PDF	302 Pages

Scroll/Zoom	100%

производитель	PMC [PMC-Sierra, Inc]

домашняя страница	http://www.pmc-sierra.com

Logo

41 / 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

TFCLK

Input

The transmit FIFO clock (TFCLK) is used to write

words to the synchronous FIFO interface. TFCLK

must cycle at a 52 MHz or lower instantaneous

rate. TWRENB, TSOC, TXPRTY[1:0] and

TDAT[15:0] are sampled on the rising edge of

TFCLK. In addition, TCA is updated on the rising

edge of TFCLK.

TWRENB

Input

The active low transmit write enable input

(TWRENB) is used to initiate writes to the transmit

FIFO. When sampled low using the rising edge of

TFCLK, the 16-bit word on TDAT[15:0] is written

into the transmit FIFO. When sampled high using

the rising edge of TFCLK, no write is performed.

A complete 53 octet cell must be written to the

FIFO before it is inserted into the STS-3c/1 (STM-

1) SPE. Idle/unassigned cells are inserted when

a complete cell is not available.

PM5347 датащи(PDF) 41 Page - PMC-Sierra, Inc