Intel 386

Intel386™ EX EMBEDDED MICROPROCESSOR USER’S MANUAL
5-20
Figure 5-12. Configuration of Chip-select Unit and Clock and Power Management Unit
A3380-01
CS0#
CS1#
CS2#
CS3#
CS4#
CS5#
CS6#
CSU
CSO#
(P2.0)
To/From I/O Port 2
1
0
CS1#
(P2.1)
To/From I/O Port 2
1
0
CS2#
(P2.2)
To/From I/O Port 2
1
0
CS3#
(P2.3)
To/From I/O Port 2
1
0
PWRDOWN
Clock and
Power
Management
Unit
PWRDOWN
(P3.6)
To/From I/O Port 3
1
0
P2CFG.0
P2CFG.1
P2CFG.2
P2CFG.3
CS4#
(P2.4)
To/From I/O Port 2
1
0
CS5#
(DACK0#)
DACK0# (DMA)
1
0
CS6#
(REFRESH#)
REFRESH# (RCU)
1
0
P2CFG.4
PINCFG.4
PINCFG.6
P3CFG.6