32579B

Electrical Specifications

9.3.7Sub-ISA Interface

All output timing is guaranteed for 50 pF load, unless otherwise specified. The ISA Clock divisor (defined in F0 Index 50h[2:0] of the Core Logic module) is 011.

Table 9-24. 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

 

9-20

Standard

 

active pulse width FE to RE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tRD2

MEMR#/DOCR#/RD#/TRDE# read

16

M

105

 

9-20

Zero wait state

 

active pulse width FE to RE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tRD3

IOR#/RD#/TRDE# read active pulse

16

I/O

160

 

9-20

Standard

 

width FE to RE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tRD4

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

8

M, I/O

520

 

9-20

Standard

 

read active pulse width FE to RE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tRD5

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

8

M, I/O

160

 

9-20

Zero wait state

 

read active pulse width FE to RE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tRCU1

MEMR#/DOCR#/RD#/TRDE#

16

M

103

 

9-20

 

 

inactive pulse width

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tRCU2

MEMR#/DOCR#/RD#/TRDE#

8

M

163

 

9-20

 

 

inactive pulse width

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tRCU3

IOR#/RD#/TRDE# inactive pulse

8, 16

I/O

163

 

9-20

 

 

width

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tWR1

MEMW#/WR# write active pulse

16

M

225

 

9-21

Standard

 

width FE to RE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tWR2

MEMW#/DOCW#/WR# write active

16

M

105

 

9-21

Zero wait state

 

pulse width FE to RE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tWR3

IOW#/WR# write active pulse width

16

I/O

160

 

9-21

Standard

 

FE to RE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tWR4

IOW#/MEMW#/DOCW#/WR# write

8

M, I/O

520

 

9-21

Standard

 

active pulse width FE to RE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tWR5

IOW#/MEMW#/DOCW#/WR# write

8

M, I/O

160

 

9-21

Zero wait state

 

active pulse width FE to RE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tWCU1

MEMW#/WR#/DOCW# inactive pulse

16

M

103

 

9-21

 

 

width

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tWCU2

MEMW#/WR#/DOCW# inactive pulse

8

M

163

 

9-21

 

 

width

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tWCU3

IOW#/WR# inactive pulse width

8, 16

I/O

163

 

9-21

 

tRDYH

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

8, 16

M, I/O

120

 

9-20

 

 

MEMW#/WR#/DOCW# hold after

 

 

 

 

9-21

 

 

IOCHRDY RE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tRDYA1

IOCHRDY valid after IOR#/MEMR#/

16

M, I/O

 

78

9-20

 

 

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

 

 

 

 

9-21

 

 

DOCW# FE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

394

AMD Geode™ SC1200/SC1201 Processor Data Book

Page 394
Image 394
AMD SC1200, SC1201 manual Sub-ISA Interface, Sub-ISA Timing Parameters, Bus Width Min, Symbol Parameter Bits Type Comments