Electrical Specifications

32580B

9.3.6

Sub-ISA Interface

 

All output timing is guaranteed for 50 pF load, unless other-

The ISA Clock divisor (defined in F0 Index 50h[2:0] of the

wise specified.

Core Logic module) is 011.

Table 9-22. Sub-ISA Timing Parameters

 

 

Bus

 

 

 

 

 

 

 

Width

 

Min

Max

 

 

Symbol

Parameter

(Bits)

Type

(ns)

(ns)

Figure

Comments

 

 

 

 

 

 

 

 

tRD1

MEMR#/DOCR#/RD#/TRDE# Read

16

M

225

 

9-19

Standard

 

active pulse width FE to RE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tRD2

MEMR#/DOCR#/RD#/TRDE# Read

16

M

105

 

9-19

Zero wait state

 

active pulse width FE to RE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tRD3

IOR#/RD#/TRDE# Read active pulse

16

I/O

160

 

9-19

Standard

 

width FE to RE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tRD4

IOR#/MEMR#/DOCR#/RD#/TRDE#

8

M, I/O

520

 

9-19

Standard

 

Read active pulse width FE to RE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tRD5

IOR#/MEMR#/DOCR#/RD#/TRDE#

8

M, I/O

160

 

9-19

Zero wait state

 

Read active pulse width FE to RE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tRCU1

MEMR#/DOCR#/RD#/TRDE#

16

M

103

 

9-19

 

 

inactive pulse width

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tRCU2

MEMR#/DOCR#/RD#/TRDE#

8

M

163

 

9-19

 

 

inactive pulse width

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tRCU3

IOR#/RD#/TRDE# inactive pulse

8, 16

I/O

163

 

9-19

 

 

width

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tWR1

MEMW#/WR# Write active pulse

16

M

225

 

9-20

Standard

 

width FE to RE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tWR2

MEMW#/DOCW#/WR# Write active

16

M

105

 

9-20

Zero wait state

 

pulse width FE to RE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tWR3

IOW#/WR# Write active pulse width

16

I/O

160

 

9-20

Standard

 

FE to RE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tWR4

IOW#/MEMW#/DOCW#/WR# Write

8

M, I/O

520

 

9-20

Standard

 

active pulse width FE to RE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tWR5

IOW#/MEMW#/DOCW#/WR# Write

8

M, I/O

160

 

9-20

Zero wait state

 

active pulse width FE to RE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tWCU1

MEMW#/WR#/DOCW# inactive pulse

16

M

103

 

9-20

 

 

width

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tWCU2

MEMW#/WR#/DOCW# inactive pulse

8

M

163

 

9-20

 

 

width

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tWCU3

IOW#/WR# inactive pulse width

8, 16

I/O

163

 

9-20

 

tRDYH

IOR#/MEMR#/RD#/DOCR#/IOW#/

8, 16

M, I/O

120

 

9-19

 

 

MEMW#/WR#/DOCW# Hold after

 

 

 

 

9-20

 

 

IOCHRDY RE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tRDYA1

IOCHRDY valid after IOR#/MEMR#/

16

M, I/O

 

78

9-19

 

 

RD#/DOCR#/IOW#/MEMW#/WR#/

 

 

 

 

9-20

 

 

DOCW# FE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AMD Geode™ SC2200 Processor Data Book

397

Page 379
Image 379
AMD SC2200 manual Sub-ISA Interface, Sub-ISA Timing Parameters, Bus Width Min, Symbol Parameter Bits Type Comments