W83977G Winbond Electronics Corp America, W83977G Datasheet - Page 141

• Manufacturer Part Number: W83977G
• Description: W83877TF plus KBC, CIR, RTC, Pb-free
• Manufacturer: Winbond Electronics Corp America

13.7 Logical Device 5 (KBC)
CR30 (Default 0x01 when PENKRC=1 at POR)
CR31
CR60, CR 61 (Default 0x00, 0x60 when PENKRC=1 at POR)
CR62, CR 63 (Default 0x00, 0x64 when PENKRC=1 at POR)
CR70 (Default 0x01 when PENKRC=1 at POR)
CR71 (Default 0x02, Read only)
CR72 (Default 0x0C when PENKRC=1 at POR)
CR73 (Default 0x02)
CRF0 (Default 0x40)
Bit 7-1 : Reserved.
Bit 0 :
= 1 Activates the logical device.
= 0 Logical device is inactive.
Bit 7-2 : Reserved.
Bit 1 : ENRNGCK -- > Enables I/O Range check
Bit 0 : FORIORD --> Forces LDN to respond I/O read
These two registers select the first KBC I/O base address [0x100:0xFFF] on 1 byte boundaries.
These two registers select the second KBC I/O base address [0x100:0xFFF] on 1 byte boundaries.
Bit 7-4 : Reserved.
Bit [3:0] : These bits select IRQ resource for KINT(keyboard).
Bit 7-2 : Reserved.
Bit 1 : IRQLEV -- > IRQ Level
= 1: High; = 0: Low
Bit 0 : IRQTYPE --> IRQ Type
= 1: Level trigger; = 0: Edge trigger
Bit 7-4 : Reserved.
Bit [3:0] : These bits select IRQ resource for MINT(PS2 Mouse)
Bit 7-2 : Reserved.
Bit 1 : IRQLEV -- > IRQ Level
= 1: High; = 0: Low
Bit 0 : IRQTYPE --> IRQ Type
= 1: Level trigger; = 0: Edge trigger
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.
W83977F-A/ W83977G-A/ W83977AF-A/ W83977AG-A
-133 -
Publication Release Date: May 2006
Revision 0.60