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MC143421FU bảng dữ liệu(PDF) 9 Page - Motorola, Inc |
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MC143421FU bảng dữ liệu(HTML) 9 Page - Motorola, Inc |
9 / 11 page MC143421 MOTOROLA 9 INTERNAL REGISTER DESCRIPTION Offset Bits Description 00h 0 External reset, controlling pin ERESET on the PIB 1 Reserved 2 Reserved 3 Reserved 5:4 00: PIB three–cycle operation 01: PIB five–cycle operation 1–: PIB twelve–cycle operation 6 Reserved 7 Reserved 01h 7:0 Reserved 02h 7:0 AUX pin control register. The corresponding AUX pin is an output when set to 1. 03h 7:0 AUX pin data register. When AUX pin is set as an output, the output state will be controlled by this register. 04h 7:0 Reserved 05h 7:0 Interrupt 1 mask register. Selects the AUX input that will generate the interrupt. 06h 7:0 Reserved 07h 7:0 AUX pin status register. Reads the status of the AUX pin. 29h 7:0 ACPI mask register. Set to 1 to select the AUX input to be used to enable PME# output. Enables an external event (such as a ring) to switch on the computer. 2ah 7:0 AUX pin data polarity control register. Set to 1 to invert the polarity of data. 2bh 0 AUX pin data select register. Bit 0 set to 1, AUX[6:7] becomes power state bit (reference PCI config register 44h[1:0]). C0 to FF 7:0 Peripheral Interface Bus Addressing Access Procedures All the internal registers are IO/MEM mapped. They can be accessed with either I/O or memory read/write command from the PCI bus. For I/O access, the host needs to send the address with bits A31 to A8 to match the data in configuration register 10h bits 31 to 8. Also, the address bits 7 and 6 need to be set to 0. For memory access, the address bits A31 to A12 need to match the value in configuration register 14h bits 31 to 12 and the address bits 11 to 6 need to all be 0. The internal reg- isters are byte addressable. |
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