FDC37C932APM View Datasheet(PDF) - SMSC -> Microchip

Part Name

Description

Manufacturer

FDC37C932APM

Plug and Play Compatible Ultra I/O™ Controller with Soft Power Management

SMSC -> Microchip 

Table 106 - Auxilliary I/O, Logical Device 8 [Logical Device Number = 0x08]

NAME

REG INDEX

DEFINITION

STATE

GP24

Default = 0x01

on VTR POR

0xEC General Purpose I/0 bit 2.4

C

Bit[0] In/Out =1 Input, =0 Output

Bit[1] Polarity =1 Invert, =0 No Invert

Bit[2] Int En

=1 Enable Combined IRQ

=0 Disable Combined IRQ

Bit[4:3] Function Select

=00 GPIO

=01 Serial EEPROM Enable

=10 Either Edge Triggered Interrupt Input 3 Enable

=11 Reserved

Bit[7:5] Reserved = 000

GP25

0xED General Purpose I/0 bit 2.5

C

Bit[0] In/Out =1 Input, =0 Output

Default = 0x01

Bit[1] Polarity =1 Invert, =0 No Invert

on VTR POR

Bit[2] Int En =1 Enable Combined IRQ

=0 Disable Combined IRQ

Bit[3] Alt Func: GATEA20

=1 Select alternate function

=0 Select basic I/O function

Bit[7:4] : Reserved = 0000

0xEE Reserved

C

GP_INT2

Default = 0x00

on VTR POR

0xEF

General Purpose I/O Combined Interrupt 2

Bit[2:0] Reserved, = 000

Bit[3] GP IRQ Filter Select

0 = Debounce Filter Bypassed

1 = Debounce Filter Enabled

Bit[7:4] Combined IRQ mapping

1111 = IRQ15

.........

0011 = IRQ3

0010 = Invalid

0001 = IRQ1

0000 = Disable

233

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