FDC37N958FR 查看數據表（PDF） - SMSC -> Microchip
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FDC37N958FR Datasheet PDF : 316 Pages
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PinPin
NAME
DESCRIPTION OF PIN FUNCTIONS
SUPPLY
DESCRIPTION
VOLTAGE
TYPE
PIN #
183
181
nFWR
FALE
Flash Memory Write
Flash Address latch Enable
KEYBOARD
VCC1
O8
VCC1
O8
36:30,
28:22
KSO[0:13]
44:37
193
45
46
47
48
50
51
52
53
KSI[0:7]
nEA
EMCLK
EMDAT
IMCLK
IMDAT
KBCLK
KBDAT
PS2CLK/
8051RX/
GPIO[20]
PS2DAT/
8051TX/
GPIO[21]
Keyboard Scan Outputs(14*8 = 112)
Configuring GPIO4 and GPIO5 as
KSO14 and KSO15 yields a scan
matrix of 16 x 8 = 128.
Keyboard Scan Inputs
External Access for 2K ROM
EM Serial Clock
EM Serial Data
IM Serial Clk
IM Serial Data
KBD Serial Clock
KBD Serial Data
PS2 Serial Clock
VCC1
VCC1
VCC1
VCC2
VCC2
VCC2
VCC2
VCC2
VCC2
VCC2
PS2 Serial Data
VCC2
OD4
ISP
I
I/OD 24
I/OD 24
I/OD 24
I/OD 24
I/OD 24
I/OD 24
I/OD24
I/OD24
SERIAL IRQ / UART IRQS
101
SIRQ /
IRQ3(UA1)
Serial Interrupt
UART1 Interrupt
VCC2
I/O24
/O24
99
PSBCLK
PCI Clock input
VCC2
I
100
PSBDAT
UART2 Interrupt
VCC2
I/O24
/O24
FDD INTERFACE
The following FDC output pins can be configured as either Open Drain outputs capable of
sinking 24mA (OD24) or as push-pull outputs capable of driving 12mA and sinking 24mA (O24).
The FDC output pins must tristate when the FDC is in powerdown mode (The board designer
must provide external pull-up resistors on these output pins).
17
nRDATA
Read Disk Data
VCC2
IS
12
nWGATE
Write Gate
VCC2
O24/
OD24
11
nWDATA
Write Disk Data
VCC2
O24/
OD24
SMSC DS – FDC37N958FR
Page 4
Rev. 09/01/99
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