Freescale Semiconductor ColdFire MCF52210 - Manual (Page 198)

General Purpose I/O Module
MCF52211 ColdFire® Integrated Microcontroller Reference Manual, Rev. 2
13-4 Freescale Semiconductor
13.6 Register Descriptions
13.6.1 Port Output Data Registers (PORTn)
The PORTn registers store the data to be driven on the corresponding port n pins when the pins are
configured for digital output.
The PORTn registers with a full 8-bit implementation are shown in Figure 13-2 . The remaining PORTn
registers use fewer than 8 bits. Their bit definitions are shown in Figure 13-3 , Figure 13-4 , Figure 13-5 ,
and Figure 13-6 . The fields are described in Table 13-2 , which applies to all PORTn registers.
The PORTn registers are read/write. At reset, all bits in the PORTn registers are set.
Reading a PORTn register returns the current values in the register, not the port n pin values.
PORTn bits can be set by setting the PORTn register, or by setting the corresponding bits in the
PORTnP/SETn register. They can be cleared by clearing the PORTn register, or by clearing the
corresponding bits in the CLRn register.
IPSBAR
Offsets:
0x10_0014 (PORTDD)
0x10_000A (PORTAN) Access: User read/write
7 6 5 4 3 2 1 0
R
PORTn7 PORTn6 PORTn5 PORTn4 PORTn3 PORTn2 PORTn1 PORTn0
W
Reset: 1 1 1 1 1 1 1 1
Figure 13-2. Port Output Data Registers with Bits 7:0 Implemented (PORTDD, PORTAN)
IPSBAR
Offsets:
0x10_000E (PORTTA)
0x10_000F (PORTTC)
0x10_0010 (PORTTD)
0x10_0011 (PORTUA)
0x10_0012 (PORTUB)
0x10_0013 (PORTUC) Access: User read/write
7 6 5 4 3 2 1 0
R 0 0 0 0
PORTn3 PORTn2 PORTn1 PORTn0
W
Reset: 0 0 0 0 1 1 1 1
Figure 13-3. Port Output Data Registers with Bits 3:0 Implemented (PORTTA, PORTTC, PORTDD, PORTUA,
PORTUB, PORTUC)