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SC3200 Datasheet(PDF) 244 Page - Advanced Micro Devices |
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SC3200 Datasheet(HTML) 244 Page - Advanced Micro Devices |
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244 / 447 page  244 AMD Geode™ SC3200 Processor Data Book Core Logic Module - Bridge, GPIO, and LPC Registers - Function 0 Revision 5.1 6.4.1.2 LPC Support Registers F0 Index 14h, Base Address Register 1 (F0BAR1) points to the base address of the register space that contains the configuration registers for LPC support. Table 6-31 gives the bit formats of the I/O mapped registers accessed through F0BAR1. The LPC Interface supports all features described in the LPC bus specification 1.0, with the following exceptions: • Only 8- or 16-bit DMA, depending on channel number. Does not support the optional larger transfer sizes. • Only one external DRQ pin. Table 6-31. F0BAR1+I/O Offset: LPC Interface Configuration Registers Bit Description Offset 00h-03h SERIRQ_SRC — Serial IRQ Source Register (R/W) Reset Value: 00000000h Note: Some signals require additional programming to make them externally accessible. See Table 4-2 "Multiplexing, Interrupt Selec- tion, and Base Address Registers" on page 88 for pin multiplexing details and Table 3-6 "Strap Options" on page 58 for LPC_ROM strap information. 31:21 Reserved. 20 INTD Source. Selects the interface source of the INTD# signal. 0: PCI - INTD# (EBGA ball B22; TEPBGA ball AA2). 1: LPC - SERIRQ (EBGA ball AL8; TEPBGA ball J31). 19 INTC Source. Selects the interface source of the INTC# signal. 0: PCI - INTC# (EBGA ball H4; TEPBGA ball C9). 1: LPC - SERIRQ (EBGA ball AL8; TEPBGA ball J31). 18 INTB Source. Selects the interface source of the INTB# signal. 0: PCI - INTB# (EBGA ball AF1; TEPBGA ball C26). 1: LPC - SERIRQ (EBGA ball AL8; TEPBGA ball J31). 17 INTA Source. Selects the interface source of the INTA# signal. 0: PCI - INTA# (EBGA ball AE3; TEPBGA ball D26). 1: LPC - SERIRQ (EBGA ball AL8; TEPBGA ball J31). 16 Reserved. Set to 0. 15 IRQ15 Source. Selects the interface source of the IRQ15 signal. 0: ISA - IRQ15 (EBGA ball H30; TEPBGA ball AJ8). 1: LPC - SERIRQ (EBGA ball AL8; TEPBGA ball J31). 14 IRQ14 Source. Selects the interface source of the IRQ14 signal. 0: ISA - IRQ14 (EBGA ball D25; TEPBGA ball AF1). 1: LPC - SERIRQ (EBGA ball AL8; TEPBGA ball J31). 13 IRQ13 Source. Selects the interface source of the internal IRQ13 signal. 0: ISA - IRQ13 internal signal. (An input from the CPU indicating that a floating point error has been detected and that inter- nal INTR should be asserted.) 1: LPC - SERIRQ (EBGA ball AL8; TEPBGA ball J31). 12 IRQ12 Source. Selects the interface source of the IRQ12 signal. 0: ISA - IRQ12 (unavailable externally). 1: LPC - SERIRQ (EBGA ball AL8; TEPBGA ball J31). 11 IRQ11 Source. Selects the interface source of the IRQ11 signal. 0: ISA - IRQ11 (unavailable externally). 1: LPC - SERIRQ (EBGA ball AL8; TEPBGA ball J31). 10 IRQ10 Source. Selects the interface source of the IRQ10 signal. 0: ISA - IRQ10 (unavailable externally). 1: LPC - SERIRQ (EBGA ball AL8; TEPBGA ball J31). 9 IRQ9 Source. Selects the interface source of the IRQ9 signal. 0: ISA - IRQ9 (EBGA ball C22; TEPBGA ball AA3). 1: LPC - SERIRQ (EBGA ball AL8; TEPBGA ball J31). |
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