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W83977EF-AW Datasheet(PDF) 99 Page - Winbond |
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W83977EF-AW Datasheet(HTML) 99 Page - Winbond |
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99 / 142 page  W83977EF-AW/W83977EG-AW Publication Release Date: Apr. 2006 -97- Revision 1.2 Bit 1: TX2INV. = 0 the SOUTB pin of UART B function or IRTX pin of IR function in normal condition. = 1 inverse the SOUTB pin of UART B function or IRTX pin of IR function. Bit 0: RX2INV. = 0 the SINB pin of UART B function or IRRX pin of IR function in normal condition. = 1 inverse the SINB pin of UART B function or IRRX pin of IR function 12.6 Logical Device 5 (KBC) CR30 (Default 0x01 if PENKBC= 1 during POR, default 0x00 otherwise) Bit 7 - 1: Reserved. Bit 0: = 1 Activates the logical device. = 0 Logical device is inactive. CR60, CR 61 (Default 0x00, 0x60 if PENKBC= 1 during POR, default 0x00 otherwise) These two registers select the first KBC I/O base address [0x100:0xFFF] on 1 byte boundary. CR62, CR 63 (Default 0x00, 0x64 if PENKBC= 1 during POR, default 0x00 otherwise) These two registers select the second KBC I/O base address [0x100:0xFFF] on 1 byte boundary. CR70 (Default 0x01 if PENKBC= 1 during POR, default 0x00 otherwise) Bit 7 - 4: Reserved. Bit [3:0]: These bits select IRQ resource for KINT (keyboard). CR72 (Default 0x0C if PENKBC= 1 during POR, default 0x00 otherwise) Bit 7 - 4: Reserved. Bit [3:0]: These bits select IRQ resource for MINT (PS2 Mouse) CRF0 (Default 0x83) Bit 7 - 6: KBC clock rate selection = 00 Select 6MHz as KBC clock input. = 01 Select 8MHz as KBC clock input. = 10 Select 12Mhz as KBC clock input. = 11 Select 16Mhz as KBC clock input. Bit 5 - 3: Reserved. Bit 2: = 0 Port 92 disable. = 1 Port 92 enable. Bit 1: = 0 Gate20 software control. = 1 Gate20 hardware speed up. Bit 0: = 0 KBRST software control. = 1 KBRST hardware speed up. |
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