w83977atg Winbond Electronics Corp America, w83977atg Datasheet - Page 150

• Manufacturer Part Number: w83977atg
• Description: W83877tf Plus Kbc, Gp I/o, Wake-up, Fir, Cir, Pb-free
• Manufacturer: Winbond Electronics Corp America

CR70 (Default 0x03 if PNPCSV = 0 during POR, default 0x00 otherwise)
CRF0 (Default 0x00)
14.6 Logical Device 5 (KBC)
CR30 (Default 0x01 if PENKBC= 1 during POR, default 0x00 otherwise)
CR60, CR 61 (Default 0x00, 0x60 if PENKBC= 1 during POR, default 0x00 otherwise)
CR62, CR 63 (Default 0x00, 0x64 if PENKBC= 1 during POR, default 0x00 otherwise)
CR70 (Default 0x01 if PENKBC= 1 during POR, default 0x00 otherwise)
CR72 (Default 0x0C if PENKBC= 1 during POR, default 0x00 otherwise)
CRF0 (Default 0x83)
Bit 7 - 4
Bit [3:0]
Bit 7 - 2
Bit 1 - 0
Bit 7 - 1
Bit 0
Bit 7 - 4
Bit [3:0]
Bit 7 - 4
Bit [3:0]
Bit 7 - 6
These two registers select the first KBC I/O base address [0x100:0xFFF] on 1 byte boundary.
These two registers select the second KBC I/O base address [0x100:0xFFF] on 1 byte boundary.
: Reserved.
These bits select IRQ resource for Serial Port 2.
: Reserved.
: SUBCLKB1, SUBCLKB0
= 00
= 01
= 10
= 11
: Reserved.
= 1
= 0
: Reserved.
: These bits select IRQ resource for KINT (keyboard).
: Reserved.
: These bits select IRQ resource for MINT (PS2 Mouse)
: KBC clock rate selection
= 00
= 01
= 10
= 11
UART B clock source is 1.8462 Mhz (24MHz/13)
UART B clock source is 2 Mhz (24MHz/12)
UART B clock source is 24 Mhz (24MHz/1)
UART B clock source is 14.769 Mhz (24MHz/1.625)
Activates the logical device.
Logical device is inactive.
Select 6MHz as KBC clock input.
Select 8MHz as KBC clock input.
Select 12Mhz as KBC clock input.
Select 16Mhz as KBC clock input.
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W83977ATF/W83977ATG