VT5376 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
VT5376
STMicroelectronics
'VT5376' PDF : 31 Pages View PDF
I2C control register map
VT5376
Table 9. I2C control register map (continued)
Index
address
Bits
Name
R/W
[0] Invert X
RW
[1] Invert Y
RW
[3] Swap XY
RW
[5] Test Pattern Enabled
RW
0x27
[6:7] Test Pattern Speed
RW
0x29 [7:0] Min_features[13:6]
RW
0x2A [7:0] Scaling for X motion vectors
RW
0x2B [7:0] Scaling for Y motion vectors
RW
0x31 [15:8]
RO
Features count
0x32 [7:0]
RO
0x41 [7:0] Exposure [8:1]
RW
0x43
[4] Auto Expo En
RW
0x47 [7:0] Vbat converted data
RO
Default
Description
0h
Allows X to be inverted(2)
0h
Allows Y to be inverted(2)
1h
Replaces X with Y and Y with X
0: Normal mode
0h
1: Diamond shape pattern
Diamond test pattern speed -
0x0 : motion = 127 max speed
0h
0x1 : motion = 64
0x2 : motion = 32
0x3 : motion = 16
0000_0100
This register represents the feature
threshold below which motion is no
longer valid (in this case, the device
reports “0” motion). This is linked to
the value reported in registers
0x31/0x32
0001_0000
Sets resolution as CPI:
8: 400 CPI, 16: 800 CPI
32 = 1600CPI, 64 = 3200CPI
Assuming lens magnification of x0.5
0001_0000
Sets resolution as CPI:
0x08: 400 CPI
0x10: 800 CPI
Assuming lens magnification of x 0.5
Feature count report: the higher the
value, the more distinctive features the
surface requires, for the motion
detection machine to operate reliably.
Exposure value in 2 x CLK12 period
80h
units. eg. max exposure value of FF =
42.5uS LED on time
1h
Auto exposure enable
This register holds the current
converted data from the Vbat input
voltage.
The data range is as follows:
0000_0000: Vbat = 0.6 V
1111_1111: Vbat = 1.6 V
The response is linear for each value
in between. ADC step: 1V/256 =
3.9 mV
16/31
Doc ID 13939 Rev 4
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