PC87413 datasheet(50/257 Pages) NSC

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3.0 Device Architecture and Configuration (Continued)

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Revision1.2

3.7.3

ServerI/O Configuration 2 Register (SIOCF2)

Power Well:VSB

Location:Index 22h

Type:

R/W or RO

R/W

HSWRST (Host Software Reset). When set to 1, this bit triggers the Host Software reset sequence

(see Section 2.2.6 on page 35), after which it returns to 0. Read always returns 0. This bit is not

inﬂuenced by the value of LOCKMCF.

0: Inactive (default)

1: Trigger the Host Software reset sequence

R/W or

GLOBEN (Global Device Enable). When set to 1, this bit allows the operation of all the logical devices

of the PC8741x device (see Table 9 on page 39). The behavior of the different devices is explained in

Section 3.3. When cleared, this bit forces all logical devices to be disabled simultaneously by writing to

a single bit.

0: All logical devices in the PC8741x device are forced to be disabled and their resources are released

1: Each logical device may be enabled; see Section 3.3.1 on page 43 (default)

Bit

43210

Name

WDOMUX

Reserved

NOKBC

VDDFLMUX

P17MUX

P16MUX

P12MUX

CLKRNMUX

Reset

00000

Bit

Description

WDOMUX (Watchdog Out Multiplex Control). Selects the function connected to pin 55.

0: GPO64 port - GPIO (default)

1: WDO - SWC

Reserved.

NOKBC (Keyboard and Mouse Multiplex Control). Selects the function connected to pins 125-128.

0: GPIO01-GPIO04 ports - GPIO

1: KBCLK, KBDAT, MCLK, MDAT - KBC (default)

VDDFLMUX (VDDFELL Multiplex Control). Selects the function connected to pin 54.

0: GPIO54 - GPIO (default)

1: VDDFELL - SWC

P17MUX (P17 Multiplex Control). Selects the function connected to pin 66.

0: MTR1 - FDC (default)

1: P17 port - KBC

P16MUX (P16 Multiplex Control). Selects the function connected to pin 70.

0: DR1 - FDC (default)

1: P16 port - KBC

P12MUX (P12 Multiplex Control). Selects the function connected to pin 121.

0: PPDIS - Parallel Port (default)1

1: P12 port - KBC (internally, PPDIS is set to 0; Parallel Port enabled)

1. If this feature is not used, either select the P12 port or connect an external 3.3 K

Ω pull-down resistor to pin 121.

If the function connected to the pin is PPDIS and the pin is left unconnected, the output signals of the par-

allel port will ﬂoat.

CLKRNMUX (CLKRUN Multiplex Control). Selects the function connected to pin 124.

0: GPIO00 port - GPIO (default)

1: CLKRUN - LPC Interface

Bit

Type

Description

PC87413 Datasheet(PDF) 50 Page - National Semiconductor (TI)

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