Microcontroller User's Manual

26-6 MCF5282 User’s Manual MOTOROLA
Memory Map/Register Definition
Refer to Chapter 14, “Signal Descriptions” for more detailed descriptions of these pins. The
function of the pins (primary function, GPIO, etc.) is determined by the various ports
registers and the mode of operation. Refer to Table 14-1 for detailed descriptions of pin
functions.
26.3 Memory Map/Register Definition
26.3.1 Register Overview
Table 26-2 summarizes all the registers in the MCF5282 ports address space.
DTIN0 PTD[1] UCTS1 UCTS0 DMA timer 0 input / Port TD[3] / UART1 clear to send / UART0 clear
to send
DTOUT0 PTD[0] UCTS1
UCTS0 DMA timer 0 output / Port TD[3] / UART1 clear to send / UART0 clear
to send
URXD1 PUA[3] — — UART1 receive serial data / Port UA[3]
UTXD1 PUA[2] — — UART1 transmit serial data / Port UA[2]
URXD0 PUA[1] — — UART0 receive serial data / Port UA[1]
UTXD0 PUA[0] — — UART0 transmit serial data / Port UA[0]
1
The primary functionality of a pin is not necessarily the default function of the pin after reset. Pins that have muxed GPIO functionality
will default to GPIO inputs.
2
Function available in master mode only
3
Pins not actually part of Port Module, but included here for complete listing of available I/O ports. See separate section for description
of this port.
Table 26-2. MCF5282 Ports Module Memory Map
IPSBAR +
Offset
31–24 23–16 15–8 7–0 Access
1
Port Output Data Registers
0x10_0000 PORTA PORTB PORTC PORTD S/U
0x10_0004 PORTE PORTF PORTG PORTH S/U
0x10_0008 PORTJ PORTDD PORTEH PORTEL S/U
0x10_000C PORTAS PORTQS PORTSD PORTTC S/U
0x10_0010 PORTTD PORTUA Reserved
2
S/U
Table 26-1. MCF5282 Ports External Signals (continued)
Primary
Function (Pin
Name)
1
GPIO
(Default
Function)
Alternate
Function 1
Alternate
Function 2
Description