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Chapter 2 Port Integration Module (S12XEPIMV1)
MC9S12XE-Family Reference Manual , Rev. 1.07
110
Freescale Semiconductor
The reduced drive functionality does not take effect on the pins in emulation modes.
Table 2-14. RDRIV Register Field Descriptions
Field
Description
7
RDPK
Port K
reduced drive
—Select reduced drive for outputs
This bit configures the drive strength of all Port K output pins as either full or reduced. If a pin is used as input this
bit has no effect.
1 Reduced drive selected (1/6 of the full drive strength).
0 Full drive strength enabled.
6-5
Reserved
—
4
RDPE
Port E reduced drive—Select reduced drive for outputs
This bit configures the drive strength of all Port E output pins as either full or reduced. If a pin is used as input this
bit has no effect.
1 Reduced drive selected (1/6 of the full drive strength).
0 Full drive strength enabled.
3
RDPD
Port D reduced drive—Select reduced drive for outputs
This bit configures the drive strength of all output pins as either full or reduced. If a pin is used as input this bit has
no effect.
1 Reduced drive selected (1/6 of the full drive strength).
0 Full drive strength enabled.
2
RDPC
Port C reduced drive—Select reduced drive for outputs
This bit configures the drive strength of all output pins as either full or reduced. If a pin is used as input this bit has
no effect.
1 Reduced drive selected (1/6 of the full drive strength).
0 Full drive strength enabled.
1
RDPB
Port B reduced drive—Select reduced drive for outputs
This bit configures the drive strength of all output pins as either full or reduced. If a pin is used as input this bit has
no effect.
1 Reduced drive selected (1/6 of the full drive strength).
0 Full drive strength enabled.
0
RDPA
Port A reduced drive—Select reduced drive for outputs
This bit configures the drive strength of all output pins as either full or reduced. If a pin is used as input this bit has
no effect.
1 Reduced drive selected (1/6 of the full drive strength).
0 Full drive strength enabled.