FDC37M600 SMSC [SMSC Corporation], FDC37M600 Datasheet - Page 114
![no-image](/images/no-image-200.jpg)
FDC37M600
Manufacturer Part Number
FDC37M600
Description
ENHANCED SUPER I/O CONTROLLER WITH INFRARED SUPPORT
Manufacturer
SMSC [SMSC Corporation]
Datasheet
1.FDC37M600.pdf
(182 pages)
- Current page: 114 of 182
- Download datasheet (643Kb)
KEYBOARD ISA INTERFACE
The FDC37M60x ISA interface is functionally
compatible with the 8042 style host interface. It
consists of the D0-7 data bus; the nIOR, nIOW
and
Note 1: These registers consist of three separate 8 bit registers. Status, Data/Command Write and
Keyboard Data Write
This is an 8 bit write only register.
written, the C/D status bit of the status register
is cleared to zero and the IBF bit is set.
Keyboard Data Read
This is an 8 bit read only register. If enabled by
"ENABLE FLAGS", when read, the KIRQ output
is cleared and the OBF flag in the status register
is cleared.
AUXOBF1 must be cleared in software.
ISA ADDRESS
0x60
0x64
the
Data Read.
If not enabled, the KIRQ and/or
Status
nIOW
0
1
0
1
register,
Table 48 - ISA I/O Address Map
nIOR
Input
1
0
1
0
When
Data
BLOCK
KDATA
KDATA
KDCTL
KDCTL
114
register, and Output Data register. Table 48
shows how the interface decodes the control
signals. In addition to the above signals, the
host interface includes keyboard and mouse
IRQs.
Keyboard Command Write
This is an 8 bit write only register.
written, the C/D status bit of the status register
is set to one and the IBF bit is set.
Keyboard Status Read
This is an 8 bit read only register. Refer to the
description of the Status Register for more
information.
Keyboard Data Write (C/D=0)
Keyboard Data Read
Keyboard Command Write (C/D=1)
Keyboard Status Read
FUNCTION (NOTE 1)
When
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