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SCI Control Registers

29.7.20 SCI Pin I/O Control Register 7 (SCIPIO7)

Figure 29-29 and Table 29-30 illustrate this register.

Figure 29-29. SCI Pin I/O Control Register 7 (SCIPIO7) [offset = 58h]

31 8

Reserved

R-0

7 3 2 1 0

Reserved TX PD RX PD Reserved

R-0 R/W-n R/W-n R/W-n

LEGEND: R/W = Read/Write; R = Read only; -n = value after reset, Refer to the Terminal Functions in the device datasheet for default pin

settings.

Table 29-30. SCI Pin I/O Control Register 7 (SCIPIO7) Field Descriptions

Bit Field Value Description

31-3 Reserved 0 Read returns 0. Writes have no effect.

2 TX PD Transmit pin pull control disable. This bit disables pull control capability on the input pin SCITX.

0 The pull control on the SCITX pin is enabled.

1 The pull control on the SCITX pin is disabled.

1 RX PD Receive pin pull control disable. This bit disables pull control capability on the input pin SCIRX.

0 Pull control on the SCIRX pin is enabled.

1 Pull control on the SCIRX pin is disabled.

0 Reserved 0 Writes have no effect.

29.7.21 SCI Pin I/O Control Register 8 (SCIPIO8)

Figure 29-30 and Table 29-31 illustrate this register.

Figure 29-30. SCI Pin I/O Control Register 8 (SCIPIO8) [offset = 5Ch]

31 8

Reserved

R-0

7 3 2 1 0

Reserved TX PSL RX PSL Reserved

R-0 R/W-n R/W-n R/W-n

LEGEND: R/W = Read/Write; R = Read only; -n = value after reset, Refer to the Terminal Functions in the device datasheet for default pin

settings.

Table 29-31. SCI Pin I/O Control Register 8 (SCIPIO8) Field Descriptions

Bit Field Value Description

31-3 Reserved 0 Read returns 0. Writes have no effect.

2 TX PSL TX pin pull select. This bit selects pull type in the input pin SCITX.

0 The SCITX pin is a pull down.

1 The SCITX pin is a pull up.

1 RX PSL RX pin pull select. This bit selects pull type in the input pin SCIRX.

0 The SCIRX pin is a pull down.

1 The SCIRX pin is a pull up.

0 Reserved 0 Writes have no effect.

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SPNU562–May 2014 Serial Communication Interface (SCI) Module

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