SC1100 Datasheet, PDF (204/348 Pages) National Semiconductor (TI) – Geode™ Information Appliance On a Chip

Core Logic Module (Continued)
Table 5-31. F0BAR1+I/O Offset xxh: LPC Interface Configuration Registers (Continued)
Bit Description
Offset 10h-13h
LAD_EN — LPC Address Enable Register (R/W)
Reset Value: 00000000h
31:18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
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].
Offset 14h-17h
LAD_D0 — LPC Address Decode 0 Register (R/W)
Reset Value: 00080020h
31:15
14
Reserved.
LPC Floppy Disk Controller Address Select. Selects I/O Port:
0: 3F0h-3F7h.
1: 370h-377h.
Selected address range is enabled via F0BAR1+I/O Offset 10h[6].
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