Table 54. example pin configuration registers – Intel 386 User Manual
Page 103
Intel386™ EX EMBEDDED MICROPROCESSOR USER’S MANUAL
5-30
Table 5-4. Example Pin Configuration Registers
Bit #
P1CFG
Value
Bit #
P2CFG
Value
Bit #
P3CFG
Value
7
0 = P1.7
0
7
0 = P2.7
0
7
0 = P3.7
0
1 = HLDA
1 = CTS0#
1 = COMCLK
6
0 = P1.6
0
6
0 = P2.6
1
6
0 = P3.6
0
1 = HOLD
1 = TXD0
1 = PWRDOWN
5
0 = P1.5
0
5
0 = P2.5
1
5
0 = P3.5
0
1 = LOCK#
1 = RXD0
1 = INT3
4
0 = P1.4
0
4
0 = P2.4
1
4
0 = P3.4
0
1 = RIO#
1 = CS4#
1 = INT2
3
0 = P1.3
0
3
0 = P2.3
1
3
0 = P3.3
1
1 = DSR0#
1 = CS3#
1 = INT1
2
0 = P1.2
0
2
0 = P2.2
1
2
0 = P3.2
1
1 = DTR0#
1 = CS2#
1 = INT0
1
0 = P1.1
0
1
0 = P2.1
1
1
0 = P3.1
0
1 = RTS0#
1 = CS1#
1 = mux
0
0 = P1.0
0
0
0 = P2.0
0
0
0 = P3.0
0
1 = DCD0#
1 = CS0#
1 = mux
Bit #
PINCFG
Value
Pins w/o Muxes
X
Pins w/o Muxes
X
7
Reserved
R
DRQ0
X
TMRCLK0
6
0 = CS6#
0
DCD1#
INT4
X
1 = REFRESH#
DRQ1
TMRGATE0
5
0 = Coprocessor Sigs.
1
0
RXD1
X
INT5
X
1 = TMR2 Signals
2
DSR1#
TMRCLK1
4
0 = DACK0#
1
STXCLK
X
INT6
X
1 = CS5#
RI1#
TMRGATE1
3
0 = EOP#
1
SSIORX
X
INT7
X
1 = CTS1#
2
0 = DACK1#
1
1 = TXD1
NOTES:
1
0 = SRXCLK
1
1
PEREQ, BUSY#, ERROR#
1 = DTR1#
2
TMROUT2, TMRCLK2, TMRGATE2
0
0 = SSIOTX
1
1 = RTS1#