PMC-Sierra PM5349 manual ALE CSB+RDB Intb

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)

 

 

 

A[10:0]

ALE

(CSB+RDB)

INTB

D[7:0]

Figure 24: Microprocessor Interface Read Timing

tSAR

 

 

 

Valid

Address

tS ALR

 

 

 

 

 

 

 

tHAR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tVL

 

 

tHALR

 

 

 

 

 

 

 

tSLR

 

 

 

tHLR

 

 

 

 

tZ INTH

tPRD

 

 

 

tZ RD

 

 

Valid Data

Notes on Microprocessor Interface Read Timing:

1.Output propagation delay time is the time in nanoseconds from the 1.4 Volt point of the reference signal to the 1.4 Volt point of the output.

2.Maximum output propagation delays are measured with a 100 pF load on the Microprocessor Interface data bus, (D[7:0]).

3.A valid read cycle is defined as a logical OR of the CSB and the RDB signals.

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

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Page 236
Image 236
PMC-Sierra PM5349 manual ALE CSB+RDB Intb