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W83877ATF Datasheet(PDF) 10 Page - Winbond |
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W83877ATF Datasheet(HTML) 10 Page - Winbond |
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10 / 47 page  W83877ATF Publication Release Date: April 1998 - 6 - Version 0.51 1.1 Host Interface, continued SYMBOL PIN I/O FUNCTION DRQ_C 4 OUT12t DMA request signal C. DACK_ C 18 INts DMA acknowledge signal C. IRQIN 93 INts Interrupt request input. DRQ_D OUT12t DMA request signal D. IRSL2 OUT12t IR module mode selection 2. IRRXH/IRSL0 I/O12ts When input, acts as a function of high speed IR receiving terminal. When output selected, acts as a IR module mode selection 0. PNF INts Detects printer is active, and not external FDC. When this pin PNF is detected to 1 signal, the device is switched to parallel printer. When this pin PNF is detected to 0 signal, the device is switched to external FDC. The pin is configured in CR16.bit7 (ENPNF). IRRXH/IRSL0 3 I/O12ts When input pin, high speed IR received terminal. When output pin, IR module mode select 0. Input or output are definied in high speed IR register. DACK_D INts DMA acknowledge signal for channel D. IRSL1 OUT12t IR module mode select 1. TC 97 INts Terminal Count. When active, this pin indicates termination of a DMA transfer. IRQ_ A 96 OUT12t When CR16 Bit 5 (GOIQSEL) = 0: Interrupt request signal A. SCI OUT12t ACPI interrupt signal, selected by PnP IRQ configure register. GIO1 I/O12t When CR16 Bit 4 (GOIQSEL) = 1: General Purpose I/O port 1. IRQ_ B 92 OUT12t When CR16 Bit 4 (GOIQSEL) = 0: Interrupt request signal B. GIO0 I/O12t When CR16 Bit 4 (GOIQSEL) = 1: General Purpose I/O port 0. IRQ_C 44 OUT12t Interrupt request signal C. IRQ_D 37 OUT12t Interrupt request signal D. IRQ_E 23 OUT12t Interrupt request signal E. IRQ_F 99 OUT12t Interrupt request signal F. IRQ_G 1 OUT12t Interrupt request signal G. DRQ_D OUT12t DMA request signal channel D. IRSL2 OUT12t IR module mode select 2. PCICLK INt PCI clock input when the serial IRQ function is selected. |
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