SC2200 datasheet(239/433 Pages) NSC

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Core Logic Module (Continued)

Offset 10h-13h

LAD_EN — LPC Address Enable Register (R/W)

Reset Value: 00000000h

31:18

Reserved.

LPC RTC. RTC addresses I/O Ports 070h-073h. See bit 16 for decode.

LPC/ISA Default Mapping. Works in conjunction with bits 17 and [14:0] of this register to enable mapping of specific

peripherals to LPC or internal ISA interfaces.

If bit [x] = 0 and bit 16 = 0 then: Transaction routed to internal ISA bus.

If bit [x] = 0 and bit 16 = 1 then: Transaction routed to LPC interface.

If bit [x] = 1 and bit 16 = 0 then: Transaction routed to LPC interface.

If bit [x] = 1 and bit 16 = 1 then: Transaction routed to internal ISA bus.

Bit [x] is defined as bits 17 and [14:0].

LPC ROM Addressing. Depends upon F0 Index 52h[2,0].

0: Disable.

1: Enable.

LPC Alternate SuperI/O Addressing. Alternate SuperI/O control addresses 4Eh-4Fh. See bit 16 for decode.

LPC SuperI/O Addressing. SuperI/O control addresses I/O Ports 2Eh-2Fh. See bit 16 for decode.

Note:

This bit should not be enabled when using the internal SuperI/O module and if IO_SIOCFG_IN (F5BAR0+I/O

Offset 00h[26:25]) = 11.

LPC Ad-Lib Addressing. Ad-Lib addresses I/O Ports 388h-389h. See bit 16 for decode.

LPC ACPI Addressing. ACPI microcontroller addresses I/O Ports 62h and 66h. See bit 16 for decode.

LPC Keyboard Controller Addressing. KBC addresses I/O Ports 60h and 64h.

Note:

If this bit = 0 and bit 16 = 1, then F0 Index 5Ah[1] must be written 0.

LPC Wide Generic Addressing. Wide generic addresses. See bit 16 for decode.

Address selection made via F0BAR1+I/O Offset 18h[15:9]

Note:

The selected range must not overlap any address range that is positively decoded by F0BAR1+I/O Offset 10h bits

[17], [14:10], and [8:0].

LPC Game Port 1 Addressing. Game Port 1 addresses. See bit 16 for decode.

Address selection made via F0BAR1+I/O Offset 14h[22:19]

LPC Game Port 0 Addressing. Game Port 0 addresses. See bit 16 for decode.

Address selection made via F0BAR1+I/O Offset 14h[18:15].

LPC Floppy Disk Controller Addressing. FDC addresses. See bit 16 for decode.

Address selection made via F0BAR1+I/O Offset 14h[14]

LPC Microsoft Sound System (MSS) Addressing. MSS addresses. See bit 16 for decode.

Address selection made via F0BAR1+I/O Offset 14h[13:12].

LPC MIDI Addressing. MIDI addresses. See bit 16 for decode.

Address selection made via F0BAR1+I/O Offset 14h[11:10].

LPC Audio Addressing. Audio addresses. See bit 16 for decode.

Address selection made via F0BAR1+I/O Offset 14h[9:8].

LPC Serial Port 1 Addressing. Serial Port 1 addresses. See bit 16 for decode.

Address selection made via F0BAR1+I/O Offset 14h[7:5].

LPC Serial Port 0 Addressing. Serial Port 0 addresses. See bit 16 for decode.

Address selection made via F0BAR1+I/O Offset 14h[4:2].

LPC Parallel Port Addressing. Parallel Port addresses. See bit 16 for decode.

Address selection made via F0BAR1+I/O Offset 14h[1:0].

Table 5-31. F0BAR1+I/O Offset: LPC Interface Configuration Registers (Continued)

Bit

Description

SC2200 Datasheet(PDF) 239 Page - National Semiconductor (TI)

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