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MDT80C06
PS2 optical 2D/3D, 3/5 key mouse controller
This specification is subject to be changed without notice. Please visit our web site for the most updated information.
http://www.mdtic.com.tw
P.2
2003/9 V1.2
5. Pin Function Description
Symbol
I/O
Function Description
Vdd
+5V
PD
I/O
Photo-sensor power down control (Open Drain output). Also used as
rotation selection.
Internal 100K ohm pull-high.
=1 for sensor in vertical position
=0 for sensor rotating 90 degree clockwise
Z1
Z2
I
I
Z-axis input for Photo Sensor or Mechanical resistors. Internal weak
pull low.
CLK
I/O
Connect to 8042 auxiliary port CLK line in PS/2 mode.
Internal 10K ohm pull high.
DATA
I/O
Connect to 8042 auxiliary port DATA line in PS/2 mode. Internal 10K
ohm pull high.
Vss
Ground
R
M
L
I
I
I
Three Key-switches inputs. Internal 50K ohm pull high.
K4
K5
I
The 4
th and 5th button inputs. Internal 100K ohm pull high. Also used
to select 2D/3D and 3/5 key mouse.
SCK
I/O
Serial clock output to optical mouse sensor. Internal 100K ohm pull
high. Also used to select Z/2 or Z/4
SDIO
I/O
Serial data input/output to optical mouse sensor. Internal 100K ohm
pull high.
OSCRH
I
Connect a resistor to Vdd to adjust internal RC freq.
6.Data Reporting
2D：
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit1
Bit0
Byte 1
Y ovfl
X ovfl
Y sign
X sign
1
Middle
Right
Left
Byte 2
X data
Byte 3
Y data
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