Freescale Semiconductor ColdFire MCF5211, Справочное руководство

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General Purpose I/O Module
MCF5213 ColdFire® Integrated Microcontroller Reference Manual, Rev. 3
11-4 Freescale Semiconductor
11.6 Register Descriptions
11.6.1 Port Output Data Registers (PORT n )
The PORT n registers store the data to be driven on the corresponding port n pins when the pins are
configured for digital output.
The PORT n registers with a full 8-bit implementation are shown in Figure 11-2 . The remaining PORT n
registers use fewer than 8 bits. Their bit definitions are shown in Figure 11-3 , Figure 11-4 , Figure 11-5 ,
and Figure 11-6 . The fields are described in Table 11-2 , which applies to all PORT n registers.
The PORT n registers are read/write. At reset, all bits in the PORT n registers are set.
Reading a PORT n register returns the current values in the register, not the port n pin values.
PORT n bits can be set by setting the PORT n register, or by setting the corresponding bits in the
PORT n P/SET n register. They can be cleared by clearing the PORT n register, or by clearing the
corresponding bits in the CLR n register.
IPSBAR
Offsets:
0x10_0009 (PORTDD)
0x10_000A (PORTAN) Access: User read/write
7 6 5 4 3 2 1 0
R
PORT n 7 PORT n 6 PORT n 5 PORT n 4 PORT n 3 PORT n 2 PORT n 1 PORT n 0
W
Reset: 1 1 1 1 1 1 1 1
Figure 11-2. 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
PORT n 3 PORT n 2 PORT n 1 PORT n 0
W
Reset: 0 0 0 0 1 1 1 1
Figure 11-3. Port Output Data Registers with Bits 3:0 Implemented (PORTTA, PORTTC, PORTDD, PORTUA,
PORTUB, PORTUC)