ADBS-A350 Datasheet, PDF (53/60 Pages) AVAGO TECHNOLOGIES LIMITED – Optical Finger Navigation High speed motion detection up to 20 ips

AD_ATH_HIGH
Access: Read/Write
Address: 0x6e
Reset Value: 0x3a
Bit
7
6
5
4
3
Field
ATH_H
ATH_H
ATH_H
ATH_H
ATH_H
Data Type: Bit field
USAGE: This register is used to set HIGH speed Assert shutter threshold.
2
ATH_H
1
ATH_H
Field Name
ATH_H 7:0
Description
Sets HIGH speed assert threshold. Write in hexadecimal value.
Formula (in decimal) = Shutter value / 8.
It is recommended to have hysteresis of 60 to 100 between assert and
de-assert threshold.
0
ATH_H
AD_DTH_HIGH
Access: Read/Write
Address: 0x6f
Reset Value: 0x40
Bit
7
6
5
4
3
Field
DTH_H
DTH_H
DTH_H
DTH_H
DTH_H
Data Type: Bit field
USAGE: This register is used to set HIGH speed De-assert shutter threshold.
2
DTH_H
1
DTH_H
Field Name
DTH_H 7:0
Description
Sets HIGH speed de-assert threshold. Write in hexadecimal value.
Formula (in decimal) = Shutter value / 8.
It is recommended to have hysteresis of 60 to 100 between assert and
de-assert threshold.
0
DTH_H
AD_ATH_LOW
Access: Read/Write
Address: 0x70
Reset Value: 0x35
Bit
7
6
5
4
3
Field
ATH_L
ATH_L
ATH_L
ATH_L
ATH_L
Data Type: Bit field
USAGE: This register is used to set LOW speed Assert shutter threshold.
2
ATH_L
1
ATH_L
Field Name
ATH_L 7:0
Description
Sets LOW speed assert threshold. Write in hexadecimal value.
Formula (in decimal) = Shutter value / 8.
It is recommended to have hysteresis of 60 to 100 between assert and
de-assert threshold.
0
ATH_L
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