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FDC37B779 Datasheet(PDF) 8 Page - SMSC Corporation

Part # FDC37B779
Description  ENHANCED SUPER I/O CONTROLLER WITH WAKE UP FEATURES
PDF  196 Pages
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Manufacturer  SMSC [SMSC Corporation]
Direct Link  http://www.smsc.com
Logo SMSC - SMSC Corporation

FDC37B779 Datasheet(HTML) 8 Page - SMSC Corporation

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DESCRIPTION OF PIN FUNCTIONS
PIN
No./QFP
NAME
TOTAL
SYMBOL
BUFFER
TYPE
97
Data Set Ready 2/Sys Addr 15
1
nDSR2/
SA15
I/I
94
Data Carrier Detect 2/8042 P12
1
nDCD2/P12
I/IO24
92
Ring Indicator 2/8042 P16
1
nRI2/P16
I/IO24
PARALLEL PORT INTERFACE (17)
68:75
Parallel Port Data Bus
8
PD[0:7]
IO24
67
Printer Select
1
nSLCTIN
OD24/O24
66
Initiate Output
1
nINIT
OD24/O24
82
Auto Line Feed
1
nALF
OD24/O24
83
Strobe Signal
1
nSTROBE
OD24/O24
79
Busy Signal
1
BUSY
I
80
Acknowledge Handshake
1
nACK
I
78
Paper End
1
PE
I
77
Printer Selected
1
SLCT
I
81
Error at Printer
1
nERROR
I
KEYBOARD/MOUSE INTERFACE (6)
56
Keyboard Data
1
KDAT
IOD16
57
Keyboard Clock
1
KCLK
IOD16
58
Mouse Data
1
MDAT
IOD16
59
Mouse Clock
1
MCLK
IOD16
63
Keyboard Reset
1
KBDRST
(Note 3)
O4
64
Gate A20
1
A20M
O4
Note 1:
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 FDC37B77x addressing modes.
Note 2:
The "n" as the first letter of a signal name indicates an "Active Low" signal.
Note 3:
KBDRST is active low.
Note 4:
The pull-down on this pin is always active including when the output driver is tristated
and regardless of the state of internal PWRGOOD.
Note 5:
The “activate” bit for the CIrCC is reset by VTR POR only. The VCC power-up default for
this pin is Logic “0”.
Note 6:
The “activate” bit for Serial Port 2 is reset by VTR POR only. The VCC power-up default for
this pin is Logic “1”.



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