Data Registers; Table 32-12 Data Register Description - Motorola DragonBall MC9328MX1 Reference Manual

GPIO Module and I/O Multiplexer (IOMUX)

32.5.4 Data Registers

The Port X Data Register holds the value to be output from port X when a pin is configured as an output
and the Data Register is chosen in the Output Configuration Register 1 and Output Configuration
Register 2.
There are four distinct Data Registers; each holds the data for one of the four GPIO ports (Port A, Port B,
Port C, and Port D).
DR_A
DR_B
DR_C
DR_D
BIT 31 30 29
TYPE rw rw rw
0 0 0
RESET
BIT 15 14 13
TYPE rw rw rw
0 0 0
RESET
Name
DR [i] Data—Contains the GPIO output values when the Output
Bits 31–0 Configuration Registers select the Data Register as the output for the
pin (selection
32-16
Port A Data Register
Port B Data Register
Port C Data Register
Port D Data Register
28 27 26 25
rw rw rw rw
0 0 0 0
12 11 10 9
rw rw rw rw
0 0 0 0
Table 32-12. Data Register Description
Description
11 ).
MC9328MX1 Reference Manual
24 23 22 21 20
DR
rw rw rw rw rw
0 0 0 0 0
0x0000
8 7 6 5 4
DR
rw rw rw rw rw
0 0 0 0 0
0x0000
Addr
0x0021C01C
0x0021C11C
0x0021C21C
0x0021C31C
19 18 17 16
rw rw rw rw
0 0 0 0
3 2 1 0
rw rw rw rw
0 0 0 0
Settings
0 = Drives the output signal
low
1 = Drives the output signal
high
MOTOROLA