PMC-Sierra PM5349 manual Ale Csb+Wrb, TSALW tHALW TV L TSAW tVWR tHAW

Models: PM5349

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PMC-Sierra, Inc.

S/UNI-QUAD

DATASHEET

PM5349 S/UNI-QUAD

PMC-971239

ISSUE 6

SATURN USER NETWORK INTERFACE (155-QUAD)

 

 

 

Figure 25: Microprocessor Interface Write Timing

A[10:0]

ALE

(CSB+WRB)

D[7:0]

Valid Address

tSALW tHALW

tVL

tS

LW

 

 

 

tH

 

 

 

 

 

 

 

 

 

LW

tSAW tVWR tHAW

tS DW

 

 

 

tH DW

Valid Data

Notes on Microprocessor Interface Write Timing:

1A valid write cycle is defined as a logical OR of the CSB and the WRB signals.

2In non-multiplexed address/data bus architectures, ALE should be held high so parameters tSALW, tHALW, tVL, tSLW, and tHLW are not applicable.

3Parameter tHAW is not applicable if address latching is used.

4When a set-up time is specified between an input and a clock, the set-up time is the time in nanoseconds from the 1.4 Volt point of the input to the 1.4 Volt point of the clock.

5When a hold time is specified between an input and a clock, the hold time is the time in nanoseconds from the 1.4 Volt point of the input to the 1.4 Volt point of the clock.

Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use

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PMC-Sierra PM5349 manual Ale Csb+Wrb, TSALW tHALW TV L TSAW tVWR tHAW