COM20022I-3V Datasheet, PDF (83/83 Pages) SMSC Corporation – 10 Mbps ARCNET (ANSI 878.1) Controller with 2Kx8 On-Board RAM

10 Mbps ARCNET (ANSI 878.1) Controller with 2Kx8 On-Board RAM
Datasheet
Chapter 10 Appendix B
ISA Bus
AEN
SA15-SA4
SD15-SD0
LS688x2
nG
12 bit
Comparators
P
Q
I/O Address Seeting (DIP Switches)
P=Q
12
12
LS245x2
A
16 bit Bus
Transceivers
A
B
16
16
DIR
nG
COM20022
nCS
D15-D0
nIOR
nIOW
SA2-SA0
3
3
IRQm
5V
nIOCS16
DRQn
nDACK
TC
nREFRESH
RESETDRV
Schmitt-Trigger Buffer
Open-Collector Buffer
nRD
nWR
A2-A0
nINTR
nIOCS16
DREQ
nDACK
TC
nREFEX
nRESET
Figure 10.1 - Example of Interface of Circuit Diagram to ISA Bus
SMSC COM20022I 3V
Page 83
DATASHEET
Revision 02-27-06