Input Configuration Registers; Input Configuration Register A1; Table 32-8 Input Configuration Register A1 Description - Motorola DragonBall MC9328MX1 Reference Manual

GPIO Module and I/O Multiplexer (IOMUX)

32.5.3 Input Configuration Registers

The input configuration registers ICONFA1 and ICONFA2 specify the signal or value driven to the AOUT
bus. The input configuration registers ICONFB1 and ICONFB2 specify the signal or value driven to the
BOUT bus. There are two bits in the input configuration registers for each port pin.
There are four distinct input configuration registers for each port; each holds the data for one of the four
GPIO ports (Port A, Port B, Port C, and Port D).

32.5.3.1 Input Configuration Register A1

ICONFA1_A
ICONFA1_B
ICONFA1_C
ICONFA1_D
BIT 31 30 29
pin 15
TYPE rw rw rw
1 1 1
RESET
BIT 15 14 13
pin 7
TYPE rw rw rw
1 1 1
RESET
Table 32-8. Input Configuration Register A1 Description
Name
ICONFA1 [i] Input Configuration—Corresponds to
Bits 31–0 pins 0–15 of the port and defines which
one of the four options is driven to
AOUT [i]. Each port pin [i] (i = 0 through
15) requires two ICONFA1 bits to
determine the input value.
32-12
Port A Input Configuration Register A1
Port B Input Configuration Register A1
Port C Input Configuration Register A1
Port D Input Configuration Register A1
28 27 26 25
pin 14 pin 13
rw rw rw rw
1 1 1 1
12 11 10 9
pin 6 pin 5
rw rw rw rw
1 1 1 1
Description
MC9328MX1 Reference Manual
24 23 22 21
ICONFA1
pin 12 pin 11 pin 10
rw rw rw rw
1 1 1 1
0xFFFF
8 7 6 5
ICONFA1
pin 4 pin 3
rw rw rw rw
1 1 1 1
0xFFFF
ICONFA1 ICONFA1
[2i + 1] [2i]
0 0
0 1
1 0
1 1
0x0021C00C
0x0021C10C
0x0021C20C
0x0021C30C
20 19 18 17
pin 9
rw rw rw rw
1 1 1 1
4 3 2 1
pin 2 pin 1
rw rw rw rw
1 1 1 1
Settings
Input Selected
GPIO-In [i]
Interrupt Status Register [i]
0
1
MOTOROLA
Addr
16
pin 8
rw
1
0
pin 0
rw
1