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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的模擬線性光學傳感器陣列數(shù)字轉(zhuǎn)換器 |
| 文件頁數(shù)： | 8/14頁 |
| 文件大?。?/td> | 153K |
| 代理商： | TSL3301 |
TSL3301
102
×
1 LINEAR OPTICAL SENSOR ARRAY
WITH ANALOGTODIGITAL CONVERTER
TAOS026 – FEBRUARY 2001
8
www.taosinc.com
Copyright 2001, TAOS Inc.
OPERATION
Initialization Sequence
After powering on the device, a minimum of 10 clocks with SDIN held high must be received by the TSL3301
to clear the receiver logic so that a start bit will be detected correctly. The control logic may then be cleared by
either issuing an IRESETcommand (break character) or 3 RESET(0x1b) commands. An additional 30 clocks
must be received by the device to assure the state of SDOUT.
Sleep Mode
The device can be put into a power down or sleep mode by writing a 0x10 to the mode register. This turns off
all the analog circuitry on the chip. Normal operation is restored by writing a 0x00 to the mode register. The
analog circuitry will require a minimum of 1 millisecond to recover from the sleep mode.
Note that putting the device in the sleep mode does not affect the logic states of the machine. If, for example,
a READPixel command is issued, the device will respond but the resulting data will be meaningless. Also note
that 0x00 and 0x40 are the only two legitimate user programmable values for the single-chip version of the
TSL3301. Other values may put the device into a non-operational mode.
For minimum sleep mode current consumption, voltage levels on logic inputs must be at either V
DD
or ground.
Imaging
After powering up the device and completing the initialization sequence, it is necessary to allow a minimum of
1 millisecond for the internal analog circuitry to settle. This delay is also required when coming out of the sleep
mode.
Issuing a STARInt(0x08) command will release the pixel integrators from the reset state. After an appropriate
delay to integrate the image, the pixel data may be sampled by issuing a SAMPLEInt(0x10) command and then
read out by issuing a READPixel (0x02) command.
A STARTIntcommand can be issued anytime after the SAMPLEIntcommand is issued to start another cycle.
Thus, it is possible to be reading out one sample while integrating the next. However, the sampled data from
the previous SAMPLEIntmust be completely read out before the next SAMPLEIntcommand is issued.
The compound commands READHold (0x12) and READHoldNStart ((0x16) are shortcut commands to simplify
the imaging sequence.
It is important to note that a pixel reset sequence is initiated with the receipt of a SAMPLEInt READHold, or
READHoldNStart command. The next integration sequence cannot start until the pixel reset sequence has been
completed, which requires 22 clocks
AFTER
the receipt of one of these commands. These clocks can be used
to clock commands or data into or out of the device.
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