w83977eg Winbond Electronics Corp America, w83977eg Datasheet - Page 111

• Manufacturer Part Number: w83977eg
• Description: Winbond Isa I/o W83977ef W83977eg
• Manufacturer: Winbond Electronics Corp America

CRF3 (Default 0x00)
CRF4 (Default 0x00)
CRF6 (Default 0x00)
or (MOUIRQEN and MOUIRQSTS) or (URCIRQEN and URCIRQSTS) or (WDTIRQEN and
WDTIRQSTS) or (COMIRQEN and COMIRQSTS) or (GP11IRQEN and GP11IRQSTS) or
(FDCIRQEN and FDCIRQSTS) or (PRTIRQEN and PRTIRQSTS) or (KBCIRQEN and KBCIRQSTS)
SMI#/SCI# logic output = (URBIRQEN and URBIRQSTS) or (URAIRQEN and URAIRQSTS) or
(GP10IRQEN and GP10IRQSTS)
Bit 7: Reserved. Return zero when read.
Bit 6 - 0: Device's IRQ status.
These bits indicate the IRQ status of the individual device respectively. The device's IRQ status bit
is set by their source device and is cleared by writing a 1. Writing a 0 has no effect.
Bit 6: URCIRQSTS. UART C IRQ status.
Bit 5: MOUIRQSTS. MOUSE IRQ status.
Bit 4: KBCIRQSTS. KBC IRQ status.
Bit 3: PRTIRQSTS. printer port IRQ status.
Bit 2: FDCIRQSTS. FDC IRQ status.
Bit 1: URAIRQSTS. UART A IRQ status.
Bit 0: URBIRQSTS. UART B IRQ status.
Bit 7 - 5: Reserved. Return zero when read.
Bit 3: Reserved. Return zero when read.
Bit 4 and Bit 2 - 0:These bits indicate the status of the individual GPIO function respectively. The
status is set by their source function and is cleared by writing a 1. Writing a 0 has no effect.
Bit 4: WDTIRQSTS. Watch dog timer IRQ status at logical device 8.
Bit 2: COMIRQSTS. Common IRQ status of GP20 - GP25 at logical device 8.
Bit 1: GP11IRQSTS. GP11 interrupt steering status at logical device 7.
Bit 0: GP10IRQSTS. GP10 interrupt steering status at logical device 7.
Bit 7: Reserved. Return zero when read.
Bit 6 - 0: Enable bits of the SMI#/SCI# generation due to the device's IRQ.
These bits enable the generation of an SMI#/SCI# interrupt due to any IRQ of the devices.
Bit 6: URCIRQEN.
Bit 5: MOUIRQEN.
Bit 4: KBCIRQEN.
= 0
= 1
= 0
= 1
= 0
= 1
disable the generation of an SMI#/SCI# interrupt due to UART C's IRQ.
enable the generation of an SMI#/SCI# interrupt due to UART C's IRQ.
disable the generation of an SMI#/SCI# interrupt due to MOUSE's IRQ.
enable the generation of an SMI#/SCI# interrupt due to MOUSE's IRQ.
disable the generation of an SMI#/SCI# interrupt due to KBC's IRQ.
enable the generation of an SMI#/SCI# interrupt due to KBC's IRQ.
W83977EF-AW/W83977EG-AW
-109-
Publication Release Date: Apr. 2006
Revision 1.2