TCS3404 TAOS [TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS], TCS3404 Datasheet - Page 23

• Manufacturer Part Number: TCS3404
• Description: DIGITAL COLOR SENSORS
• Manufacturer: TAOS [TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS]

Configuring the Timing Register
// Set up Timing Register
//Read data registers (see Basic Operation example)
//Perform Manual Integration of 50 us
//Read data registers (see Basic Operation example)
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The command, timing, and control registers are initialized to default values on power up. Setting these registers
to the desired values would be part of a normal initialization or setup procedure. In addition, to maximize the
performance of the device under various conditions, the integration time and gain may be changed often during
operation. The following pseudo code illustrates a procedure for setting up the timing register for various
options.
//Low Gain (1x), integration time of 12ms (default value)
Address = 0x39
Command = 0x81
Data = 0x02
WriteByte(Address, Command, Data)
//Low Gain (1x), integration time of 101ms
Command = 0x81
Data = 0x01
WriteByte(Address, Command, Data)
//Low Gain (1x), integration time of 12ms
Data = 0x00
WriteByte(Address, Command, Data)
//High Gain (16x), integration time of 101ms
Command = 0x81
Data = 0x01
WriteByte(Address, Command, Data)
Command = 0x87
Data = 0x20
WriteByte(Address, Command, Data)
//Set up for manual integration
Command = 0x80
Data = 0x01
WriteByte(Address, Command, Data)
Command = 0x81
Data = 0x10
WriteByte(Address, Command, Data)
Command = 0x80
Data = 0x03
WriteByte(Address, Command, Data)
//Integrate for 50ms
Sleep (50)
//Stop integrating
Command 0x80
Data = 0x01
WriteByte(Address, Command, Data)
APPLICATION INFORMATION: SOFTWARE
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//Timing Register
//Timing Register
//Timing Register
//Gain Control Register
//Disable ADC_EN
//Set manual integration
//Enable ADC_EN and begin integration
//Wait for 50ms
//Disable ADC_EN and stop integration
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DIGITAL COLOR SENSORS
TCS3404, TCS3414
Copyright E 2011, TAOS Inc.
TAOS137A − APRIL 2011
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