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VD5377 数据表(PDF) 48 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) 48 Page - STMicroelectronics

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Basic start-up information
VD5377
48/88
Doc ID 022952 Rev 2
As an example, the initialization routines could use the following sequence.
1.
Sensor in automatic power mode without “use standby pin”, int LED_DAC set at max
current, 800CPI (M = 0.5), motion pin polarity high (push-pull).
–
Register 0x5 = 0xd
([0] - automatic power mode, [2] - motion pin high, [3] - host config done)
2.
Sensor in automatic power mode with “use standby pin”, int LED_DAC set to 10 mA,
register override, 800 CPI (M = 1), motion pin polarity high (open drain).
–
Register 0x3 = 0x5c
([3:2] - register override and [6:4] - LED DAC current)
–
Register 0xc = 0xce
([7:0] - motion open drain)
–
Register 0x2a/0x2b = 0x8
([7:0] - 800 CPI for 1 x magnification)
–
Register 0x5 = 0x1d
([0] - automatic power mode, [2] - motion pin high, [3] - host config done and [4] -
use standby pin)
3.
Sensor in manual power mode with “use standby pin”, int LED_DAC set at max current,
1000 CPI (M = 0.5), motion pin polarity low (push-pull), sunlight mode on, min features
set to 1024.
–
Register 0x29 = 0x40
([7:0] - min features)
–
Register 0x2a/0x2b = 0x14
([7:0] - 1000 CPI for 0.5 x magnification)
–
Register 0x51 = 0x2
([1:0] - sunlight mode on)
–
Register 0x5 = 0x18
([0] - manual power mode, [2] - motion pin low, [3] - host config done and [4] - use
standby pin)



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