FDC37B72X(1999) Ver la hoja de datos (PDF) - SMSC -> Microchip
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FDC37B72X Datasheet PDF : 244 Pages
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GENERAL PURPOSE I/O PINS
TABLE 3 - GENERAL PURPOSE I/O PIN FUNCTIONS
PIN NO.
QFP
DEFAULT
FUNCTION
ALTERNATE ALTERNATE
FUNCTION 1 FUNCTION 2
ALTERNATE
FUNCTION 3
BUFFER
TYPE5
INDEX
REG. GPIO
77
GPIO
78
GPIO
79
GPIO
nSMI
nRING
WDT
-
EETI1
P17/P124
-
-
EETI1
IOP4/(OP12/
OD12)
IOP4/I/I
IOP4/O4/IO4/I
GP1
GP1
GP1
GP10
GP11
GP12
80
GPIO
LED
-
-
IOP4/O24
GP1 GP13
81
GPIO
IRRX2
-
-
IOP4/I
GP1 GP14
82
GPIO
IRTX2
-
-
IOP4/O24
GP1 GP15
4
nMTR1
GPIO
-
-
(O24/OD24)/
GP1 GP16
IOP4
6
nDS1
GPIO
-
-
(O24/OD24)/
GP1 GP17
IOP4
39
PCI_CLK
IRQ14
GPIO
-
CLKIN/(O12/
GP5 GP50
OD12)/IOP4
2
DRVDEN1
GPIO
IRQ8
nSMI
(O24/OD24)
GP5 GP52
91
nROMCS2
IRQ11
92
nROMOE2
IRQ12
83
RD02,3
IRQ1
GPIO
GPIO
GPIO
EETI1
EETI1
nSMI
/IOP4/
(OP12/OD12)/
(OP12/OD12)
IO12/(O12/
OD12)/IOP4/I
IO12/(O12/
OD12)/IOP4/I
IO12/(O12/
OD12)/IOP4/
GP5
GP5
GP6
GP53
GP54
GP60
84
RD12,3
IRQ3
GPIO
LED
(OP12/OD12)
IO12/(O12/
GP6 GP61
85
RD22,3
86
RD32,3
87
RD42,3
IRQ4
IRQ5
IRQ6
GPIO
GPIO
GPIO
nRING
WDT
P17/P124
OD12)/IOP4/
O24
IO12/(O12/
OD12)/IOP4/I
IO12/(O12/
OD12)/IOP4/
O4
IO12/(O12/
OD12)/IOP4/
GP6
GP6
GP62
GP63
GP6 GP64
88
RD52,3
IRQ7
GPIO
-
IO4
IO12/(O12/
GP6 GP65
89
RD62,3
IRQ8
GPIO
-
90
RD72,3
IRQ10
GPIO
-
OD12)/IOP4
IO12/(OP12/
OD12)/IOP4
IO12/(O12/
OD12)/IOP4
GP6
GP6
GP66
GP67
Note 1: Either Edge Triggered Interrupt Inputs.
Note 2: 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.
Note 3: These pins cannot be programmed as open drain pins in their original function.
Note 4: The function of P17 or P12 is selected via the P17/P12 select bit in the Ring Filter Select
Register in Logical Device 8 at 0xC6. Default is P17.
11
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