PixArt Imaging Inc.
ADBS-A350 Optical Finger Navigation
MOTION_CTRL
Access: Read/Write
Address: 0x74
Reset Value: 0x00
7
6
5
4
3
2
1
0
Bit
Reserved
Reserved
Reserved
Reserved
Reserved
Motion_
Int_Thres2
Motion_
Int_Thres1
Motion_
Int_Thres0
Field
Data Type: Bit field
USAGE: This register is used to control Motion interrupt.
Field Name
Description
Motion_Int_
Thres2:0
Motion interrupt threshold
Only trigger Motion Interrupt if Delta_X + Delta_Y > Threshold
FPD_CTRL
Access: Read/Write
Address: 0x75
Reset Value: 0xfa
7
6
5
4
3
2
1
0
Bit
Shut_Cut
_Thres7
Shut_Cut
_Thres6
Shut_Cut
_Thres5
Shut_Cut
_Thres4
FPD_On_
Hyst3
FPD_On_
Hyst2
FPD_Off_
Hyst1
FPD_Off_
Hyst0
Field
Data Type: Bit field
USAGE: This register is used to set sensor FPD control.
Field Name
Description
Shut_Cut_Thres7:4 Motion is cut off when shutter value is less than threshold. Valid only when
FPD_Mot_Cutoff is enabled.
Units are multiple of 256.
FPD_On_Hyst3:2
FPD_Off_Hyst1:0
Hysteresis counter for finger on
Hysteresis counter for finger off
FPD_THRESH
Access: Read/Write
Address: 0x76
Reset Value: 0x1c
7
6
5
4
3
2
1
0
Bit
FPD_T
FPD_T
FPD_T
FPD_T
FPD_T
FPD_T
FPD_T
FPD_T
Field
Data Type: Bit field
USAGE: This register is used to set the sensitivity of FPD. See OFN A350 Firmware Guide for more information on FPD
operation and thresholds setting.
Field Name
Description
FPD_T 7:0
Threshold to compare with FPD Value
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PixArt Imaging Inc.
E-mail: fae_service@pixart.com.tw
52
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