1 8-bit pddr_x registers, 2 7-bit pddr_x register – Freescale Semiconductor MCF5480 User Manual
Page 384

MCF548x Reference Manual, Rev. 3
15-12
Freescale Semiconductor
Most PDDR_x registers have a full 8-bit implementation, as shown in
PDDR_x registers use fewer than eight bits. Their bit definitions are shown in
,
,
The PDDR_x registers are read/write. At reset, all bits in the PDDR_x registers are cleared. Setting any bit
in a PDDR_x register configures the corresponding port x pin as an output. Clearing any bit in a PDDR_x
register configures the corresponding pin as an input.
15.3.2.2.1
8-Bit PDDR_x Registers
The 8-bit PDDR_x registers include the following:
•
PDDR_FBCTL
•
PDDR_FEC0H
•
PDDR_FEC0L
•
PDDR_FEC1H
•
PDDR_FEC1L
•
PDDR_PSC3PSC2
•
PDDR_PSC1PSC0
displays the 8-bit PDDR_x registers.
15.3.2.2.2
7-Bit PDDR_x Register
The 7-bit PDDR_DSPI register sets the data direction for the PDSPIn port.
displays the 7-bit
PDDR_DSPI register.
7
6
5
4
3
2
1
0
R
DDx7
DDx6
DDx5
DDx4
DDx3
DDx2
DDx1
DDx0
W
Reset
0
0
0
0
0
0
0
0
Reg
Addr
MBAR + 0xA10 (PDDR_FBCTL), 0xA14 (PDDR_FEC0H), 0xA15 (PDDR_FEC0L), 0xA16 (PDDR_FEC1H), 0xA17
(PDDR_FEC1L), 0xA1C (PDDR_PSC3PSC2), 0xA1D (PDDR_PSC1PSC0)
Figure 15-7. 8-Bit Port Data Direction Registers
Table 15-9. 8-Bit PDDR_x Field Descriptions
Bits
Name Description
7–0
DDxn
PDDR_x Data Direction Bits
0 PORT x pin is configured as input
1 PORT x pin is configured as output