FDC37C672 Просмотр технического описания (PDF) - SMSC -> Microchip
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FDC37C672 Datasheet PDF : 173 Pages
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Enhanced Super I/O Controller with Fast IR
Datasheet
PIN NO.
QFP/TQFP
67 / 65
66 / 64
82 / 80
83 / 81
79 / 77
80 / 78
78 / 76
77 / 75
81 / 79
56 / 54
57 / 55
58 / 56
59 / 57
63 / 61
NAME
TOTAL
Printer Select
1
Initiate Output
1
Auto Line Feed
1
Strobe Signal
1
Busy Signal
1
Acknowledge Handshake
1
Paper End
1
Printer Selected
1
Error at Printer
1
KEYBOARD/MOUSE INTERFACE (6)
Keyboard Data
1
Keyboard Clock
1
Mouse Data
1
Mouse Clock
1
Keyboard Reset
1
64 / 62
Gate A20
1
SYMBOL
nSLCTIN
nINIT
nALF
nSTROBE
BUSY
nACK
PE
SLCT
nERROR
KDAT
KCLK
MDAT
MCLK
KBDRST
(Note 3.4)
A20M
BUFFER
TYPE
OD24/O24
OD24/O24
OD24/O24
OD24/O24
I
I
I
I
I
IOD16P
IOD16P
IOD16P
IOD16P
O4
O4
Note 3.1 The interrupt request is output on one of the IRQx signals as an 024 buffer type. If EPP or ECP Mode is
enabled, this output is pulsed low, then released to allow sharing of interrupts. In this case, the buffer type
is OD24. Refer to the configuration section for more information.
Note 3.2
For 12-bit addressing, SA0:SA11 only, nCS should be tied to GND. For 16-bit external address
qualification, address bits SA11:SA15 can be "ORed" together and applied to nCS. The nCS pin functions
as SA11 in full 16-bit Internal Address Qualification Mode. CR24.6 controls the FDC37C672 addressing
modes.
Note 3.3 The "n" as the first letter of a signal name indicates an "Active Low" signal.
Note 3.4 KBDRST is active low.
3.1
Buffer Type Descriptions
I
IS
IOD16P
IO24
IO4
O4
O24
OD24
ICLK
Input, TTL compatible.
Input with Schmitt trigger.
Input/Output, 16mA sink, 90uA pull-up.
Input/Output, 24mA sink, 12mA source.
Input/Output, 4mA sink, 2mA source.
Output, 4mA sink, 2mA source.
Output, 24mA sink, 12mA source.
Output, Open Drain, 24mA sink.
Clock Input
SMSC FDC37C672
Page 14
DATASHEET
Rev. 10-29-03
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