4 memory map and registers, 1 memory map, 2 registers – Motorola ColdFire MCF5281 User Manual
Page 211: 1 eport pin assignment register (eppar), 4 memory map and registers -3, 1 memory map -3 11.4.2 registers -3, 1 eport pin assignment register (eppar) -3

Edge Port Module (EPORT)
Freescale Semiconductor
11-3
11.4
Memory Map and Registers
This subsection describes the memory map and register structure.
11.4.1
Memory Map
Refer to
for a description of the EPORT memory map. The EPORT has an IPSBAR offset for
base address of 0x0013_0000.
11.4.2
Registers
The EPORT programming model consists of these registers:
•
The EPORT pin assignment register (EPPAR) controls the function of each pin individually.
•
The EPORT data direction register (EPDDR) controls the direction of each one of the pins
individually.
•
The EPORT interrupt enable register (EPIER) enables interrupt requests for each pin individually.
•
The EPORT data register (EPDR) holds the data to be driven to the pins.
•
The EPORT pin data register (EPPDR) reflects the current state of the pins.
•
The EPORT flag register (EPFR) individually latches EPORT edge events.
11.4.2.1
EPORT Pin Assignment Register (EPPAR)
Table 11-2. Edge Port Module Memory Map
IPSBAR
Offset
Bits 15–8
Bits 7–0
Access
1
1
S = CPU supervisor mode access only. S/U = CPU supervisor or user mode access. User mode accesses to
supervisor only addresses have no effect and result in a cycle termination transfer error.
0x0013_0000
EPORT Pin Assignment Register (EPPAR)
S
0x0013_0002 EPORT Data Direction Register (EPDDR) EPORT Interrupt Enable Register (EPIER)
S
0x0013_0004
EPORT Data Register (EPDR)
EPORT Pin Data Register (EPPDR)
S/U
0x0013_0006
EPORT Flag Register (EPFR)
Reserved
2
2
Writing to reserved address locations has no effect, and reading returns 0s.
S/U
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Field
EPPA7
EPPA6
EPPA5
EPPA4
EPPA3
EPPA2
EPPA1
—
Reset
0000_0000_0000_0000
R/W
R/W
R
Address
IPSBAR + 0x0013_0000, 0x0013_0001
Figure 11-2. EPORT Pin Assignment Register (EPPAR)
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3