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參數(shù)資料
| 型號： | TSL3301 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 102 】 1 LINEAR OPTICAL SENSOR ARRAY WITH ANALOGTODIGITAL CONVERTER |
| 中文描述： | 102】1的模擬線性光學(xué)傳感器陣列數(shù)字轉(zhuǎn)換器 |
| 文件頁數(shù)： | 6/14頁 |
| 文件大?。?/td> | 153K |
| 代理商： | TSL3301 |
TSL3301
102
×
1 LINEAR OPTICAL SENSOR ARRAY
WITH ANALOGTODIGITAL CONVERTER
TAOS026 – FEBRUARY 2001
6
www.taosinc.com
Copyright 2001, TAOS Inc.
PROGRAMMING INFORMATION
A minimum of 6 clock cycles is required after any command to ensure that the internal logic actions have been
completed.
Reset Commands
Reset commands are used to put the TSL3301 into a known state.
IRESET — Interface Initialization
Encoding: Break Character (10 or more consecutive start bits, or zeros)
The commands vary in length from one to three bytes. IRESETinitializes the internal state machine that keeps
track of which command bytes have been received. This command should be first and given only once after
power-up to synchronize the TSL3301 internal command interpreter.
An alternative is to issue three successive RESETcommands.
RESET — Main Reset
Encoding: 0x1b: <0001_1011>
RESETresets most of the internal control logic of the TSL3301 and any READPixel command currently in
progress is aborted. RESETputs the pixel integrators into the auto-zero/reset state. Any values that were being
held in the array’s sample/hold circuits are lost.
NOTE:
The value on the SDOUT pin is not guaranteed from the time power is applied until 30 clocks after
the first RESET command is issued.
Pixel Action Commands
Pixel action commands allow the user to control pixel integration and reading of pixel data.
STARTInt — Start Integration
Encoding: 0x08: <0000_1000>
STARTIntcauses each pixel to leave the reset state and to start integrating light. The actual execution
of STARTIntis delayed until the pixel reset cycle has been completed. (See imaging below.)
SAMPLEInt — Stop Integration
Encoding: 0x10: <0001_0000>
SAMPLEIntcauses each pixel to store its integrator’s contents into a sample and hold circuit. Also, the Integrator
is returned to the reset state. Twenty-two clock cycles are necessary to complete the pixel reset cycle.
READPixel — Read Pixel Data
Encoding: 0x02: <0000_0010>
READPixel causes the sampled value of each pixel to be converted to an 8-bit digital value that is clocked out
on the SDOUT pin. The LSB is the first data bit, which is preceded by a START bit (logic 0) and followed by a
STOP bit (logic 1). Each pixel in the device is presented on SDOUT starting from pixel 00 and completes with
pixel 101. There is a 44-clock cycle delay from the completion of the READPixel command until the first pixel
data is output.
Gain and offset registers are used to adjust the ADC converter to maximize dynamic range and should be
programmed prior to invoking the READPixel command.
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