FDC37B72X View Datasheet(PDF) - SMSC -> Microchip
Part Name
Description
Manufacturer
FDC37B72X Datasheet PDF : 238 Pages
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GENERAL PURPOSE I/O PINS
PIN NO.
QFP
77
78
79
80
81
82
4
6
39
2
91
92
83
84
85
86
87
88
89
90
Note 1:
Note 2:
Note 3:
TABLE 3 - GENERAL PURPOSE I/O PIN FUNCTIONS
DEFAULT ALTERNATE ALTERNATE ALTERNATE
INDEX
FUNCTION FUNCTION 1 FUNCTION 2 FUNCTION 3
BUFFER
TYPE5
REG. GPIO
GPIO
nSMI
-
-
IOP4/(OP12/
GP1 GP10
GPIO
GPIO
nRING
WDT
EETI1
P17/P124
-
EETI1
OD12)
IOP4/I/I
IOP4/O4/IO4/I
GP1
GP1
GP11
GP12
GPIO
LED
-
-
IOP4/O24
GP1 GP13
GPIO
IRRX2
-
-
IOP4/I
GP1 GP14
GPIO
IRTX2
-
-
IOP4/O24
GP1 GP15
nMTR1
GPIO
-
-
(O24/OD24)/
GP1 GP16
IOP4
nDS1
GPIO
-
-
(O24/OD24)/
GP1 GP17
IOP4
PCI_CLK
IRQ14
GPIO
-
CLKIN/(O12/
GP5 GP50
OD12)/IOP4
DRVDEN1 GPIO
IRQ8
nSMI
(O24/OD24)
GP5 GP52
/IOP4/
(OP12/OD12)/
nROMCS2
IRQ11
GPIO
EETI1
(OP12/OD12)
IO12/(O12/
GP5 GP53
nROMOE2
IRQ12
GPIO
EETI1
OD12)/IOP4/I
IO12/(O12/
GP5 GP54
RD02,3
IRQ1
GPIO
nSMI
OD12)/IOP4/I
IO12/(O12/
GP6 GP60
OD12)/IOP4/
RD12,3
IRQ3
GPIO
LED
(OP12/OD12)
IO12/(O12/
GP6 GP61
OD12)/IOP4/
RD22,3
IRQ4
GPIO
nRING
O24
IO12/(O12/
GP6 GP62
RD32,3
IRQ5
GPIO
WDT
OD12)/IOP4/I
IO12/(O12/
GP6 GP63
OD12)/IOP4/
RD42,3
IRQ6
GPIO
P17/P124
O4
IO12/(O12/
GP6 GP64
OD12)/IOP4/
RD52,3
IRQ7
GPIO
-
IO4
IO12/(O12/
GP6 GP65
RD62,3
IRQ8
GPIO
-
OD12)/IOP4
IO12/(OP12/
GP6 GP66
RD72,3
IRQ10
GPIO
-
OD12)/IOP4
IO12/(O12/
GP6 GP67
OD12)/IOP4
Either Edge Triggered Interrupt Inputs.
At power-up, RD0-7, nROMCS and nROMOE function as the XD Bus. To use RD0-7 for alternate
functions, nROMCS must stay high until those pins are finished being programmed.
These pins cannot be programmed as open drain pins in their original function.
11
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