Port 3 Configuration Register (P3Cfg) - Intel 386 User Manual

Intel386™ EX EMBEDDED MICROPROCESSOR USER'S MANUAL
Use P3CFG bit 7 to connect the COMCLK pin to the package pin.
Port 3 Configuration
P3CFG
(read/write)
7
PM7 PM6
Bit Bit
Number Mnemonic
7 PM7
6 PM6
5 PM5
4 PM4
3 PM3
2 PM2
1 PM1
0 PM0
Figure 11-10. Port 3 Configuration Register (P3CFG)
11-20
PM5 PM4
Pin Mode:
0 = Selects P3.7 at the package pin.
1 = Selects COMCLK at the package pin.
Pin Mode:
0 = Selects P3.6 at the package pin.
1 = Selects PWRDOWN at the package pin.
Pin Mode:
0 = Selects P3.5 at the package pin.
1 = Connects master IR7 to the package pin (INT3).
Pin Mode:
0 = Selects P3.4 at the package pin.
1 = Connects master IR6 to the package pin (INT2).
Pin Mode:
0 = Selects P3.3 at the package pin.
1 = Connects master IR5 to the package pin (INT1).
Pin Mode:
0 = Selects P3.2 at the package pin.
1 = Connects master IR1 to the package pin (INT0).
Pin Mode:
See Table 5-1 on page 5-8 for all the PM1 configuration options.
Pin Mode:
See Table 5-1 on page 5-8 for all the PM0 configuration options.
Expanded Addr: F824H
ISA Addr: —
Reset State: 00H
PM3 PM2 PM1
Function
0
PM0