2 register descriptions, 1 port output data registers (portn), 2 register descriptions -10 – Motorola ColdFire MCF5281 User Manual
Page 510: 1 port output data registers (portn) -10, 1 port output data registers (port n )

General Purpose I/O Module
26-10
Freescale Semiconductor
26.3.2
Register Descriptions
26.3.2.1
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.
Most PORTn registers have a full 8-bit implementation, as shown in
registers use fewer than eight bits. Their bit definitions are shown in
,
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.
7
6
5
4
3
2
1
0
Field
PORTn7
PORTn6
PORTn5
PORTn4
PORTn3
PORTn2
PORTn1
PORTn0
Reset
1111_1111
R/W:
R/W
Address IPSBAR + 0x10_0000 (PORTA), 0x10_0001 (PORTB), 0x10_0002 (PORTC), 0x10_0003 (PORTD),
0x10_0004 (PORTE), 0x10_0005 (PORTF), 0x10_0006 (PORTG), 0x10_0007 (PORTH),
0x10_0008 (PORTJ), 0x10_0009 (PORTDD), 0x10_000A (PORTEH), 0x10_000B (PORTEL)
Figure 26-3. Port Output Data Registers (8-bit)
7
6
5
4
3
2
1
0
Field
—
PORTn6
PORTn5
PORTn4
PORTn3
PORTn2
PORTn1
PORTn0
Reset
0011_1111
R/W:
R
R/W
Address
IPSBAR + 0x10_000D (PORTQS)
Figure 26-4. Port Output Data Register (7-bit)
7
6
5
4
3
2
1
0
Field
—
PORTn5
PORTn4
PORTn3
PORTn2
PORTn1
PORTn0
Reset
0011_1111
R/W:
R
R/W
Address
IPSBAR + 0x10_000C (PORTAS), 0x10_000E (PORTSD)
Figure 26-5. Port Output Data Registers (6-bit)
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3