5 pci and external memory interface timing, Pci and external memory interface timing – Avago Technologies LSI53C825AE User Manual

Page 272

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6-44

Specifications

6.5 PCI and External Memory Interface Timing

Table 6.19

lists the LSI53C825A PCI and External Memory Interface

timing data.

Table 6.19

LSI53C825A PCI and External Memory Interface Timing

Symbol

Parameter

Min

Max

Unit

t

1

Shared signal input setup time

7

–

ns

t

2

Shared signal input hold time

0

–

ns

t

3

CLK to shared signal output valid

–

11

ns

t

4

Side signal input setup time

10

–

ns

t

5

Side signal input hold time

0

–

ns

t

6

CLK to side signal output valid

–

12

ns

t

7

CLK high to FETCH/ low

–

20

ns

t

8

CLK high to FETCH/ high

–

20

ns

t

9

CLK high to MASTER/ low

–

20

ns

t

10

CLK high to MASTER/ high

–

20

ns

t

11

Address setup to MAS/ high

25

–

ns

t

12

Address hold from MAS/ high

15

–

ns

t

13

MAS/ pulse width

25

–

ns

t

14f

MCE/ low to data clocked in (fast memory)

160

–

ns

t

14s

MCE/ low to data clocked in (slow memory)

220

–

ns

t

15f

Address valid to data clocked in (fast memory)

205

–

ns

t

15s

Address valid to data clocked in (slow memory)

265

–

ns

t

16f

MOE/ low to data clocked in (fast memory)

100

–

ns

t

16s

MOE/ low to data clocked in (slow memory)

160

–

ns

t

17

Data hold from address, MOE/, MCE/ change

0

–

ns

t

18

Next address out from MOE/, MCE/ high

50

–

ns

t

19

Data setup to CLK high

5

–

ns

t

20

Data setup to MWE/ low

30

–

ns

t

21

Data hold from MWE/ high

20

–

ns

t

25

MCE/ low to MWE/ low

25

–

ns

t

26

MWE/ high to MCE/ high

25

–

ns

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