FDC37B727 Datasheet, PDF (191/244 Pages) SMSC Corporation – 128 Pin Enhanced Super I/O Controller with ACPI Support

NAME
GP12
Default = 0x01
on Vbat POR
GP13
Default = 0x01
on Vbat POR
GP14
Default = 0x01
on Vbat POR
REG INDEX
DEFINITION
0xE2
General Purpose I/0 bit 1.2
Bit[0] In/Out : =1 Input, =0 Output
Bit[1] Polarity :=1 Invert, =0 No Invert
Bit[2] Group Interrupt Enable
=1
Enable Combined IRQ 1
=0
Disable Combined IRQ 1
Bit[4:3] Function Select
=00 GPI/O
=01 WDT
=10 P17/P12¹
=11 Either Edge Triggered Interupt 2
Bits[6:5] Reserved
Bit[7] Output Type Select
1=Open Drain
0=Push Pull
Note 1: This function is selected via bit 7 of the Ring
Filter Select Register. Default is P17.
0xE3
General Purpose I/0 bit 1.3
Bit[0] In/Out : =1 Input, =0 Output
Bit[1] Polarity : =1 Invert, =0 No Invert
Bit[2] Group Interrupt Enable
=1
Enable Combined IRQ 1
=0
Disable Combined IRQ 1
Bit[3] Function Select
=1
LED
=0
GPI/O
Bits[6:4] Reserved
Bit[7] Output Type Select
1=Open Drain
0=Push Pull
0xE4
General Purpose I/0 bit 1.4
Bit[0] In/Out : =1 Input, =0 Output
Bit[1] Polarity : =1 Invert, =0 No Invert
Bit[2] Group Interrupt Enable
=1
Enable Combined IRQ 1
=0
Disable Combined IRQ 1
Bit[3] Function Select
=1
IRRX2
=0
GPI/O
Bits[6:4] Reserved
Bit[7] Output Type Select
1=Open Drain
0=Push Pull
STATE
C
C
C
191