W83977EG-AW Datasheet, PDF (111/142 Pages) Nuvotem Talema – These products are not designed for use in life support appliances

W83977EF-AW/W83977EG-AW
CRF3 (Default 0x00)
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.
CRF4 (Default 0x00)
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.
CRF6 (Default 0x00)
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.
SMI#/SCI# logic output = (URBIRQEN and URBIRQSTS) or (URAIRQEN and URAIRQSTS) or
(FDCIRQEN and FDCIRQSTS) or (PRTIRQEN and PRTIRQSTS) or (KBCIRQEN and KBCIRQSTS)
or (MOUIRQEN and MOUIRQSTS) or (URCIRQEN and URCIRQSTS) or (WDTIRQEN and
WDTIRQSTS) or (COMIRQEN and COMIRQSTS) or (GP11IRQEN and GP11IRQSTS) or
(GP10IRQEN and GP10IRQSTS)
Bit 6: URCIRQEN.
= 0 disable the generation of an SMI#/SCI# interrupt due to UART C's IRQ.
= 1 enable the generation of an SMI#/SCI# interrupt due to UART C's IRQ.
Bit 5: MOUIRQEN.
= 0 disable the generation of an SMI#/SCI# interrupt due to MOUSE's IRQ.
= 1 enable the generation of an SMI#/SCI# interrupt due to MOUSE's IRQ.
Bit 4: KBCIRQEN.
= 0 disable the generation of an SMI#/SCI# interrupt due to KBC's IRQ.
= 1 enable the generation of an SMI#/SCI# interrupt due to KBC's IRQ.
-109-
Publication Release Date: Apr. 2006
Revision 1.2