W83977F Datasheet, PDF (19/181 Pages) Winbond – PLUG & PLAY 1.0A COMPLIANT

W83977F/ W83977AF
PRELIMINARY
1.1 Host Interface, continued
SYMBOL PIN
IRQ14
103
GP14
( GPACS )
PLED
IRSL1
IRQ15
104
GP15
( GPAWE )
WDT
IRSL2
CLKIN
1
I/O
OUT_12t
I/O_12t
OUT_12t
OUT_12t
OUT_12t
I/O_12t
OUT_12t
OUT_12t
IN_t
FUNCTION
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.
1.2 Advanced Power Management
SYMBOL PIN
I/O
FUNCTION
PHRI
69
IN_t 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.
GP20
(KBRST)
I/O_12t
CR2B bit2, 1=01: General purpose I/O port 2, bit 0. It can be
configured as keyboard reset (Keyboard P20).
POFIRQ
70 OUT_12t CR2B bit4, 3=00 (default): Advanced Power Management (APM)
power off interrupt request.
GP21 (P13)
I/O_{12t CR2B bit4, 3=01: General purpose I/O port 2, bit 1. It can be}
configured as Keyboard P13 I/O port.
P16
I/O_{12t CR2B bit4, 3=10: Keyboard P16 I/O port.}
RIC
IN_{t CR2B bit4, 3=11: RI input of UART C. [W83977AF only]}
VSB
71
-
Advanced Power Management (APM) standby current source
PSCTL
72 OUT_12t 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.
GP22 (P14)
I/O_12t CR2B bit5=1: General purpose I/O port 2, bit 2. It can be
configured as Keyboard P14 I/O port.
Publication Release Date: March 1998
-8-
Revision 0.58