PM8621 datasheet(174/184 Pages) PMC

174 / 184 page

NSE-8G™ Standard Product Data Sheet

Preliminary

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

173

Document ID: PMC-2010850, Issue 1

Microprocessor Interface Timing Characteristics

(TC = -40°C to +85°C, VDDO= 3.3V ± 5%)

Table 17 Microprocessor Interface Read Access

Symbol

Parameter

Min

Max

Units

tSAR

Address to Valid Read Set-up Time

tHAR

Address to Valid Read Hold Time

tSALR

Address to Latch Set-up Time

tHALR

Address to Latch Hold Time

tVL

Valid Latch Pulse Width

tSLR

Latch to Read Set-up

tHLR

Latch to Read Hold

tPRD

Valid Read to Valid Data Propagation Delay

tZRD

Valid Read Negated to Output Tri-state

tZINTH

Valid Read Negated to INTB High

Figure 39 Microprocessor Interface Read Timing

VALID

tZrd

tPrd

tZinth

tHlr

tSlr

tHalr

tVl

tSalr

tVl

tHar

tSar

A[11:0]

ALE

CSB+RDB)

INTB

D[31:0]

Notes on Microprocessor Interface Read Timing:

Output propagation delay time is the time in nanoseconds from the 1.4 V point of the reference signal to

the 1.4 V point of the output.

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