COM20019I Datasheet, PDF (65/65 Pages) SMSC Corporation – Low Cost ARCNET(ANSI 878.1) Controller with 2k X 8 On-Board RAM

Low Cost ARCNET (ANSI 878.1) Controller with 2K x 8 On-Board RAM
Chapter 11 APPENDIX B:
ISA Bus
AEN
SA15-SA4
SD7-SD0
LS688x2
nG
12 bit
Comparators
P
Q
I/O Address Seeting (DIP Switches)
12
P=Q
12
LS245
A
16 bit Bus
Transceivers
A
B
8
8
DIR
nG
COM20019
nCS
D7-D0
nIOR
nIOW
SA2-SA0
3
3
IRQm
nRD
nWR
A2-A0
nINTR
nIOCS16
DRQn
nDACK
TC
nREFRESH
RESETDRV
nRESET
Schmitt-Trigger Buffer
Figure 11.1 - EXAMPLE OF INTERFACE CIRCUIT DIAGRAM TO ISA BUS
SMSC COM20019I
Page 65
DATASHEET
Rev. 04-15-05