w83977f Winbond Electronics Corp America, w83977f Datasheet - Page 19

• Manufacturer Part Number: w83977f
• Description: Plug & Play 1.0a Compliant
• Manufacturer: Winbond Electronics Corp America

1.1 Host Interface, continued
1.2 Advanced Power Management
IRQ14
GP14
( GPACS )
PLED
IRSL1
IRQ15
GP15
( GPAWE )
WDT
IRSL2
CLKIN
PHRI
GP20
(KBRST)
POFIRQ
GP21 (P13)
P16
VSB
GP22 (P14)
RIC
PSCTL
SYMBOL
SYMBOL
PIN
PIN
103
104
69
70
71
72
1
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
IN
IN
IN
-
12t
12t
12t
12t
12t
12t
t
t
t
12t
12t
12t
12t
12t
12t
12t
12t
CR2C bit1, 0= 00 (default): Interrupt request 14
CR2C bit1, 0= 01: General purpose I/O port 1, bit 4. It can be
configured as a general purpose address decode output.
CR2C bit1, 0= 10: Power LED output.
CR2C bit1, 0= 11: IR module select signal 1. [W83977AF only]
CR2C bit3, 2= 00 (default): Interrupt request 15
CR2C bit3, 2= 01: General purpose I/O port 1, bit 5. It can be
configured as a general purpose address write enable output.
CR2C bit3, 2= 10: Watch-Dog timer output.
CR2C bit3, 2= 11: IR module select signal 2. [W83977AF only]
14.318/ 24 Mhz clock input, selectable through bit 5 of CR24.
CR2B bit2, 1=00 (default): Advanced Power Management (APM)
phone ring indicator. Detection of an active PHRI pulse or pulse
train activates the PSCTL signal.
CR2B bit2, 1=01: General purpose I/O port 2, bit 0. It can be
configured as keyboard reset (Keyboard P20).
CR2B bit4, 3=00 (default): Advanced Power Management (APM)
power off interrupt request.
CR2B bit4, 3=01: General purpose I/O port 2, bit 1. It can be
configured as Keyboard P13 I/O port.
CR2B bit4, 3=10: Keyboard P16 I/O port.
CR2B bit4, 3=11: RI input of UART C. [W83977AF only]
Advanced Power Management (APM) standby current source
CR2B bit5=0 (default): On/Off control for Advanced Power
Management (APM). This signal tells the main power supply
whether power should be turned on.
CR2B bit5=1: General purpose I/O port 2, bit 2. It can be
configured as Keyboard P14 I/O port.
W83977F/ W83977AF
FUNCTION
FUNCTION
Publication Release Date: March 1998
-8-
PRELIMINARY
Revision 0.58