W83977EF Datasheet, PDF (14/150 Pages) Winbond – WINBOND I/O

W83977EF
1.1 Host Interface, continued
SYMBOL PIN
I/O
IRQ14
103 OUT_12t
GP14
I/O_12t
(GPACS1#)
(P17)
PLEDO
IRQ15
GP15
(GPACS2#)
OUT_12t
104 OUT_12t
I/O_12t
(P12)
WDT
CLKIN
OUT_12t
1
IN_t
FUNCTION
Interrupt request 14. (CR2C bit 1_0 = 00, default)
General purpose I/O port 1 bit 4. (CR2C bit 1_0 = 01)
Alternate Function 1 from GP14: General purpose address
decode output.
Alternate Function 2 from GP14: KBC P17 I/O port.
Power LED output. (CR2C bit 1_0 = 10)
Interrupt request 15.(CR2C bit 3_2 = 00, default)
General purpose I/O port 1 bit 5. (CR2C bit 3_2 = 01)
Alternate Function 1 from GP15: General purpose address write
enable output.
Alternate Function 2 from GP15: KBC P12 I/O port.
Watch-Dog timer output. (CR2C bit 3_2 = 10)
24 or 48 MHz clock input, selectable through bit 5 of CR24.
1.2 General Purpose I/O Port
SYMBOL PIN
I/O
FUNCTION
PWR_CTL# 69 OD_16u Power supply control
GP20
I/O_16tu General purpose I/O port 2 bit 0.
(KBRST)
Alternate Function from GP20: Keyboard reset (KBC P20)
SMI #
70
OD_{12t For the power management, the SMI is active low by the power}
management events, that generate and SCI in ACPI mode.
(CR2B bit 4_3 = 00, default)
GP21
(P13)
I/O_12t
General purpose I/O port 2 bit 1. (CR2B bit 4_3 = 01)
Alternate Function from GP21: KBC P13 I/O port.
P16
I/O_12t KBC P16 I/O port. (CR2B bit 4_3 = 10)
PANSWOT#
72
OD_12t Panel Switch output. (CR2B bit 5 = 0, default)
GP22
I/O_12t General purpose I/O port 2 bit 2. (CR2B bit 5 = 1)
(P14)
Alternate Function from GP22: KBC P14 I/O port.
Publication Release Date: April 2003
-8 -
Revision 1.1