MDT80C06

PS2 optical 2D/3D, 3/5 key mouse controller

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P.2

2003/9 V1.2

5. Pin Function Description

Symbol

I/O

Function Description

+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

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