PixArt Imaging Inc.
ADBS-A350 Optical Finger Navigation
AD_DTH_LOW
Access: Read/Write
Address: 0x71
Reset Value: 0x3b
7
6
5
4
3
2
1
0
Bit
DTH_L
DTH_L
DTH_L
DTH_L
DTH_L
DTH_L
DTH_L
DTH_L
Field
Data Type: Bit field
USAGE: This register is used to set LOW speed De-assert shutter threshold.
Field Name
Description
DTH_L 7:0
Sets LOW 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.
QUANTIZE_CTRL
Access: Read/Write
Address: 0x72
Reset Value: 0x99
7
6
5
4
3
2
1
0
Bit
YQ_ON
YQ_DIV6
YQ_DIV5
YQ_DIV4
XQ_ON
XQ_DIV2
XQ_DIV1
XQ_DIV0
Field
Data Type: Bit field
USAGE: This register is used to set quatization for Delta_X and Delta_Y. If both X and Y quantization modes are on, then
only largest quantized X or Y will be reported.
Field Name
Description
YQ_ON
0 = Y quantization off
1 = Y quantization On
YQ_DIV6:4
XQ_ON
Quantization factor 2YQ_DIV . Reported YQ = DY / 2YQ_DIV
.
0 = X quantization off
1 = X quantization On
XQ_DIV2:0
Quantization factor 2XQ_DIV . Reported XQ = DX / 2XQ_DIV
.
XYQ_THRESH
Access: Read/Write
Address: 0x73
Reset Value: 0x02
7
6
5
4
3
2
1
0
Bit
Reserved
Reserved
Reserved
Reserved
Reserved
XYQ_M
XYQ_C1
XYQ_C0
Field
Data Type: Bit field
USAGE: This register is used to set quatization gradient for DeltaX and DeltaY.
Field Name
Description
XYQ_M
Gradient of linear region
0 = Gradient 1
1 = Gradient 2
XYQ_C1:0
Indicates the offset of linear region (max of C = 3 or 0x03)
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PixArt Imaging Inc.
E-mail: fae_service@pixart.com.tw
51
PIXART [ PIXART IMAGING INC. ]
