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VD5377 数据表(PDF) 76 Page - STMicroelectronics

部件名 VD5377
功能描述  Ultra-low power motion sensor for optical finger navigation (OFN)
PDF  88 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

VD5377 数据表(HTML) 76 Page - STMicroelectronics

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I2C register map
VD5377
76/88
Doc ID 022952 Rev 2
28
PARAMETERS_3
Reserved
3:0
PRW
04
Reserved
Reserved
4
PRW
01
Reserved
hpf_5x5_sel
5
PRW
00
Select between 3 x 3 and 5 x 5
high pass filter
0 = 3 x 3 high pass filter
1 = 5 x 5 high pass filter
Reserved
6
PRW
01
Reserved
29
MIN_FEATURES
min_features
7:0
PRW
10
This register represents the
minimum feature count below
which motion is inhibited.
Multiply by 16 to get the actual
feature count threshold. Default
is 16d = 256.
2a
X_SCALING
motion_x_scaling
7:0
PRW
10
Scaling for X motion vectors.
Resolution is calculated as
register value x 100 x M, where
M is the lens magnification.
So, for M = 0.5:
0x08 = 400 CPI that is 8 x 100 x
0.5
0x0c = 600 CPI that is 12 x 100
x 0.5
2b
Y_SCALING
motion_y_scaling
7:0
PRW
10
Scaling for Y motion vectors.
Resolution is calculated as
register value x 100 x M, where
M is the lens magnification.
So, for M = 0.5:
0x08 = 400 CPI that is 8 x 100 x
0.5
0x0c = 600 CPI that is 12 x 100
x 0.5
2c
FRAME_AVERAGE
frame_avg
7:0
PR
00
Frame average calculated over
a 16 x 16 centered window.
Possibly useful for production
test.
2f
MAX_ABS_MOTION
max_abs_motion
6:0
PR
00
Max(ABS(X motion), ABS(Y
motion)) either from integrated
or instant motion.
31
FEATURES
features_report
7:0
PR
00
Feature count report, as the
SUM of absolute differences
between pixels and the field
average. Bits [11:4] are
represented here so x16 to
calculate the actual feature
count. Maximum value is 4080
= 255 x 16.
Table 38. I2C register map (continued)
Addr
(Hex)
Register name
SIgnal name
Bit
Type
Default
(Hex)
Comment



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