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PNI SpacePoint Scout User Manual

Page 11

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PNI Sensor Corporation

Doc #1017545 r03

SpacePoint Scout User Manual

– January 2013

Page 11 of 19

Slave

Reserved

Reserved

Reserved

HPOS MSB

Master

MAK

MAK

MAK

Slave

HPOS MSB-1

HPOS LSB+1

HPOS LSB

VPOS MSB

Master MAK

MAK

MAK

NMAK SP

Slave

VPOS MSB-1

VPOS LSB+1

VPOS LSB

Establishing the Cursor Reference Frame (ResetRef)

Cursor position tracking is relative to a reference established by the user. Normally

the user will point the SpacePoint Scout at the center of a screen, then press a

keyboard button or a button on the user‟s device that will reset the cursor to the center

of the screen. The command sequence to set the cursor at the center of the screen is

given below.

Master ST HwADDR

0xB4

SP

Slave

SAK

SAK