PM5347 datasheet(38/302 Pages) PMC

tên linh kiện	PM5347

Giải thích chi tiết về linh kiện	SATURN USER NETWORK INTERFACE PLUS

PDF	302 Pages

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nhà sản xuất	PMC [PMC-Sierra, Inc]

Trang chủ	http://www.pmc-sierra.com

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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

RFCLK

Input

191

The receive FIFO clock (RFCLK) is used to read

words from the synchronous FIFO interface.

RFCLK must cycle at a 52 MHz or lower

instantaneous rate, but at a high enough rate to

avoid FIFO overflow. RRDENB is sampled using

the rising edge of RFCLK. RSOC, RCA,

RXPRTY[1:0] and RDAT[15:0] are updated on the

rising edge of RFCLK.

RRDENB

Input

190

The active low receive read enable input

(RRDENB) is used to initiate reads from the

receive FIFO. When sampled low using the rising

edge of RFCLK, a word is read from the internal

synchronous FIFO and output on bus RDAT[15:0].

When sampled high using the rising edge of

RFCLK, no read is performed and outputs

RDAT[15:0], RXPRTY[1:0] and RSOC are tristated

if the TSEN input is high. RRDENB must operate

in conjunction with RFCLK to access the FIFO at

a high enough instantaneous rate as to avoid

FIFO overflows.

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