PAW3602DH-NF Datasheet, PDF (8/33 Pages) Pixart Imaging Inc. – CMOS LASER MOUSE SENSOR

PixArt Imaging Inc.
PAW3602DH-NF
CMOS Laser Mouse Sensor
4. LD BIST (Built in Self Test) Mode
The mouse sensor can be performed the LD driver error detection function by manufactures to fit the LD power
in eye safety rule. LD BIST mode is enabled by pull-high (3.3V ONLY) the LDTEST pin. Once LDTEST pin is
pulled high, the XA, YB, YA pin are changed to be input pin and become the LD test mode input
[XA ,YB ,YA] , XA is MSB and YA is LSB. At this moment, XB is also changed to LD test fail output.
Pin Name
Description
LDTEST
[XA , YB , YA]
XB
LD Test Mode disable/enable
0 = Disable (Default)
1 = Enable
“ 000 “ = Mode 0, Measure LD power, BIST if eye safety error detection function is fail in
normal mode
“ 001 “ = Mode 1, BIST if LD_P error detection function is fail
“ 010 “ = Mode 2, BIST if LD_N error detection function is fail
“ 011 “ = Mode 3, BIST if LDRES pin is short to GND
0 = PASS
1 = FAIL
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PixArt Imaging Inc.
E-mail: [e-mail]
V1.0, Jun. 2007