W83977F-A Datasheet, PDF (141/182 Pages) Winbond – WINBOND I/O

W83977F-A/ W83977G-A/ W83977AF-A/ W83977AG-A
13.7 Logical Device 5 (KBC)
CR30 (Default 0x01 when PENKRC=1 at POR)
Bit 7-1 : Reserved.
Bit 0 :
= 1 Activates the logical device.
= 0 Logical device is inactive.
CR31
Bit 7-2 : Reserved.
Bit 1 : ENRNGCK -- > Enables I/O Range check
Bit 0 : FORIORD --> Forces LDN to respond I/O read
CR60, CR 61 (Default 0x00, 0x60 when PENKRC=1 at POR)
These two registers select the first KBC I/O base address [0x100:0xFFF] on 1 byte boundaries.
CR62, CR 63 (Default 0x00, 0x64 when PENKRC=1 at POR)
These two registers select the second KBC I/O base address [0x100:0xFFF] on 1 byte boundaries.
CR70 (Default 0x01 when PENKRC=1 at POR)
Bit 7-4 : Reserved.
Bit [3:0] : These bits select IRQ resource for KINT(keyboard).
CR71 (Default 0x02, Read only)
Bit 7-2 : Reserved.
Bit 1 : IRQLEV -- > IRQ Level
= 1: High; = 0: Low
Bit 0 : IRQTYPE --> IRQ Type
= 1: Level trigger; = 0: Edge trigger
CR72 (Default 0x0C when PENKRC=1 at POR)
Bit 7-4 : Reserved.
Bit [3:0] : These bits select IRQ resource for MINT(PS2 Mouse)
CR73 (Default 0x02)
Bit 7-2 : Reserved.
Bit 1 : IRQLEV -- > IRQ Level
= 1: High; = 0: Low
Bit 0 : IRQTYPE --> IRQ Type
= 1: Level trigger; = 0: Edge trigger
CRF0 (Default 0x40)
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.
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Publication Release Date: May 2006
Revision 0.60