PC912XDP512F0MPVR datasheet(959/1348 Pages) FREESCALE

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23.0.5.71 Port AD1 Reduced Drive Register 1 (RDR1AD1)

Read: Anytime.

Write: Anytime.

This register configures the drive strength of each PAD[15:8] output pin as either full or reduced.

If the port is used as input this bit is ignored.

23.0.5.72 Port AD1 Pull Up Enable Register 0 (PER0AD1)

Read: Anytime.

Write: Anytime.

This register activates a pull-up device on the respective PAD[23:16] pin if the port is used as input.

This bit has no effect if the port is used as output. Out of reset no pull-up device is enabled.

76543210

RDR1AD115 RDR1AD114 RDR1AD113 RDR1AD112 RDR1AD111 RDR1AD110

RDR1AD19

RDR1AD18

Reset

00000000

Figure 23-73. Port AD1 Reduced Drive Register 1 (RDR1AD1)

Table 23-64. RDR1AD1 Field Descriptions

Field

Description

7–0

RDR1AD1[15:8]

Reduced Drive Port AD1 Register 1

0 Full drive strength at output.

1 Associated pin drives at about 1/6 of the full drive strength.

76543210

PER0AD123 PER0AD122 PER0AD121 PER0AD120 PER0AD119 PER0AD118 PER0AD117 PER0AD116

Reset

00000000

Figure 23-74. Port AD1 Pull Up Enable Register 0 (PER0AD1)

Table 23-65. PER0AD1 Field Descriptions

Field

Description

7–0

PER0AD1[23:16]

Pull Device Enable Port AD1 Register 0

0 Pull-up device is disabled.

1 Pull-up device is enabled.

PC912XDP512F0MPVR 데이터시트(PDF) 959 Page - Freescale Semiconductor, Inc