Datasheet

24.0.5.8 S12X_EBI Ports Reduced Drive Register (RDRIV)
Read: Anytime.
Write: Anytime.
This register is used to select reduced drive for the pins associated with ports A, B, E, and K. If
enabled, the pins drive at about 1/6 of the full drive strength. The reduced drive function is
independent of which function is being used on a particular pin.
The reduced drive functionality does not take effect on the pins in emulation modes.
76543210
R
RDPK
00
RDPE RDPD
1
1. Register implemented, function disabled: Written values can be read back.
RDPC
1
RDPB RDPA
W
Reset 00000000
= Unimplemented or Reserved
Figure 24-10. S12X_EBI Ports Reduced Drive Register (RDRIV)
Table 24-11. RDRIV Field Descriptions
Field Description
7
RDPK
Reduced Drive of Port K
0 All port K output pins have full drive enabled.
1 All port K output pins have reduced drive enabled.
4
RDPE
Reduced Drive of Port E
0 All port E output pins have full drive enabled.
1 All port E output pins have reduced drive enabled.
1
RDPB
Reduced Drive of Port B
0 All port B output pins have full drive enabled.
1 All port B output pins have reduced drive enabled.
0
RDPA
Reduced Drive of Ports A
0 All Port A output pins have full drive enabled.
1 All port A output pins have reduced drive enabled.