FDC37M81 SMSC [SMSC Corporation], FDC37M81 Datasheet - Page 8

• Manufacturer Part Number: FDC37M81
• Description: PC98/99 Compliant Enhanced Super I/O Controller with Keyboard/Mouse Wake-Up
• Manufacturer: SMSC [SMSC Corporation]

No./QFP
Note:
Note 1:
Note 2:
Note 3:
Note 4:
75:68
PIN
100
99
97
94
92
66
67
83
82
81
77
80
79
78
59
58
57
56
64
63
The "n" as the first letter of a signal name indicates an "Active Low" signal.
Buffered types per function on multiplexed pins are separated by a slash “/”. Buffer types in
parenthesis represent multiple buffer types for a single pin function.
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 FDC37M81x addressing modes.
KBDRST is active low.
The pull-down on this pin is always active including when the output driver is tristated and
regardless of the state of internal PWRGOOD.
Clear to Send 2/Sys Addr 13
Data Terminal Ready/Sys Addr
14
Data Set Ready 2/Sys Addr 15
Data Carrier Detect 2/8042 P12
Ring Indicator 2/8042 P16
Parallel Port Data Bus
Printer Select
Initiate Output
Auto Line Feed
Strobe Signal
Busy Signal
Acknowledge Handshake
Paper End
Printer Selected
Error at Printer
Keyboard Data
Keyboard Clock
Mouse Data
Mouse Clock
Keyboard Reset
Gate A20
NAME
KEYBOARD/MOUSE INTERFACE (6)
PARALLEL PORT INTERFACE (17)
DESCRIPTION OF PIN FUNCTIONS
TOTAL
1
1
1
1
1
8
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
8
nCTS2/
SA13
nDTR2/
SA14
nDSR2/
SA15
nDCD2/P12
nRI2/P16
PD[0:7]
nSLCTIN
nINIT
nALF
nSTROBE
BUSY
nACK
PE
SLCT
nERROR
KDAT
KCLK
MDAT
MCLK
KBDRST
(Note 3)
A20M
SYMBOL
PER FUNCTION
BUFFER TYPE
OD24/O24
OD24/O24
OD24/O24
OD24/O24
(NOTE 1)
IOD16
IOD16
IOD16
IOD16
I/IO24
I/IO24
IO24
O4/I
O4
O4
I/I
I/I
I
I
I
I
I