Datasheet

Port Integration Module (S12XSPIMV1)
S12XS Family Reference Manual, Rev. 1.13
76 Freescale Semiconductor
2.3.5 Port A Data Direction Register (DDRA)
2.3.6 Port B Data Direction Register (DDRB)
Address 0x0002 (PRR) Access: User read/write
1
1
Read: Anytime, the data source depends on the data direction value
Write: Anytime
76543210
R
DDRA7 DDRA6 DDRA5 DDRA4 DDRA3 DDRA2 DDRA1 DDRA0
W
Reset 00000000
Figure 2-3. Port A Data Direction Register (DDRA)
Table 2-6. DDRA Register Field Descriptions
Field Description
7-0
DDRA
Port A Data Direction—
This bit determines whether the associated pin is an input or output.
1 Associated pin configured as output
0 Associated pin configured as input
Address 0x0003 (PRR) Access: User read/write
1
1
Read: Anytime, the data source depends on the data direction value
Write: Anytime
76543210
R
DDRB7 DDRB6 DDRB5 DDRB4 DDRB3 DDRB2 DDRB1 DDRB0
W
Reset 00000000
Figure 2-4. Port B Data Direction Register (DDRB)
Table 2-7. DDRB Register Field Descriptions
Field Description
7-0
DDRB
Port B Data Direction—
This bit determines whether the associated pin is an input or output.
1 Associated pin configured as output
0 Associated pin configured as input