PC912XDP512F0MPVR datasheet(995/1348 Pages) FREESCALE

995 / 1348 page

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

RDPK

RDPE

RDPD1

1. Register implemented, function disabled: Written values can be read back.

RDPC1

RDPB

RDPA

Reset

00000000

= Unimplemented or Reserved

Figure 24-10. S12X_EBI Ports Reduced Drive Register (RDRIV)

Table 24-11. RDRIV Field Descriptions

Field

Description

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.

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.

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.

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.

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