Motorola MCF5281 用户手册
11-6
MCF5282 User’s Manual
MOTOROLA
Memory Map and Registers
11.4.2.5 Edge Port Pin Data Register (EPPDR)
11.4.2.6 Edge Port Flag Register (EPFR)
Table 11-6. EPDR Field Descriptions
Bit(s)
Name
Description
7–1
EPDx
Edge port data bits. Data written to EPDR is stored in an internal register; if any pin of the port
is configured as an output, the bit stored for that pin is driven onto the pin. Reading EDPR
returns the data stored in the register. Reset sets EPD7-EPD1.
is configured as an output, the bit stored for that pin is driven onto the pin. Reading EDPR
returns the data stored in the register. Reset sets EPD7-EPD1.
0
—
Reserved, should be cleared.
7
6
5
4
3
2
1
0
Field
EPPD7
EPPD6
EPPD5
EPPD4
EPPD3
EPPD2 EPPD1
—
Reset
Current pin state
0
R/W
R
Address
IPSBAR + 0x0013_0005
Figure 11-6. EPORT Port Pin Data Register (EPPDR)
Table 11-7. EPPDR Field Descriptions
Bit(s)
Name
Description
7–1
EPPDx
Edge port pin data bits. The read-only EPPDR reflects the current state of the EPORT pins
IRQ7–IRQ1. Writing to EPPDR has no effect, and the write cycle terminates normally. Reset
does not affect EPPDR.
IRQ7–IRQ1. Writing to EPPDR has no effect, and the write cycle terminates normally. Reset
does not affect EPPDR.
0
—
Reserved, should be cleared.
7
6
5
4
3
2
1
0
Field
EPF7
EPF6
EPF5
EPF4
EPF3
EPF2
EPF1
—
Reset
0000_0000
R/W
R/W
R
Address
IPSBAR + 0x0013_0006
Figure 11-7. EPORT Port Flag Register (EPFR)