PixArt Imaging Inc.
ADBS-A350 Optical Finger Navigation
GPIO_CTRL
Access: Read/Write
Address: 0x6c
Reset Value: 0x80
7
6
5
4
3
2
1
0
Bit
GPIO_
Active_Set
Reserved
GPIO_
Mode5
GPIO_
Mode4
PWM_
Thres3
PWM_
Thres2
PWM_Sel1
PWM_Sel0
Field
Data Type: Bit field
USAGE: This register is used to set GPIO and PWM control.
Field Name
Description
GPIO_Active_Set
0 = GPIO is active LOW output
1 = GPIO is active HIGH output
GPIO_Mode5:4
PWM_Thres3:2
0 = Output FPD
1 = Output PWM
2 = Mechanical button input
Start PWM only when Delta_X + Delta_Y is greater than threshold in Speed
mode (Speed bit below).
0 = delta > 0
1 = delta > 8
2 = delta > 16
3 = delta >24
PWM_Sel1:0
0 = Finger On/Off, light up in 1 sec
1 = Finger On/Off, light up in 2 sec
2 = Finger On/Off, light up in 3 sec
3 = Speed
AD_CTRL
Access: Read/Write
Address: 0x6d
Reset Value: 0xc4
7
1
6
1
5
4
3
2
1
0
Bit
Reserved
Reserved
ST_HIGH3
ST_HIGH2
ST_HIGH1
ST_HIGH0
Field
Data Type: Bit field
USAGE: This register is used to control Assert De-assert. Must write 1to bit 7 and 6.
Field Name
Description
ST_HIGH3:0
High speed definition.
Any steps equal to or above this setting will use high speed A/D threshold.
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PixArt Imaging Inc.
E-mail: fae_service@pixart.com.tw
49
PIXART [ PIXART IMAGING INC. ]
