PixArt Imaging Inc.
PAW3402 / PAW3412
PS/2 Optical Mouse SOC
7. Mouse Mode Selection
The Set Sampling Rate command is used to set the device operating modes. Whenever the mouse received
command 'FF', it will reset to standard mode (2D3B) mode. After power-on reset is initiated, the mouse is set to
standard PS/2 mode.
The Device ID is available through the PS/2 Read Device Type (0xF2) command. For a device in standard 2D
mode, the device will report an ID of 0x00. For a device in standard 3D mode, the device will report an ID of
0x03.
Mode
Device ID
0x00
Standard 2D mode (2D3B)
Standard 3D mode (3D3B)
0x03
● Standard 3D Mouse (3D3B) Command Sequence
After Reset, the device will be in standard 2D mode. By sending the Set Sampling Rate command series as
follows, the device is set to standard 3D mode.
Command
Response
FA
F3
C8
F3
64
F3
50
F2
FA
FA
FA
FA
FA
FA, 03
Notice that the Set Sampling Rate commands are valid, and the device report rate will be the value of the last
command; that is, 0x50 after this series of commands.
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PixArt Imaging Inc.
10
E-mail: fae_service@pixart.com.tw
V1.0, Feb. 2008
PIXART [ PIXART IMAGING INC. ]
