TSL2671 datasheet(21/45 Pages) OSRAM

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[v1-00] 2016-Jul-12

TSL2671 − Principles of Operation

I²C Protocol

Interface and control are accomplished through an I²C serial

compatible interface (standard or fast mode) to a set of registers

that provide access to device control functions and output data.

The devices support the 7-bit I²C addressing protocol. Devices

TSL26711 and TSL26713 are at slave address 0x39, while the

TSL26715 and TSL26717 devices are at slave address 0x29.

The I²C standard provides for three types of bus transaction:

read, write, and a combined protocol (see Figure 23). During a

write operation, the first byte written is a command byte

followed by data. In a combined protocol, the first byte written

is the command byte followed by reading a series of bytes. If a

read command is issued, the register address from the previous

command will be used for data access. Likewise, if the MSB of

the command is not set, the device will write a series of bytes

at the address stored in the last valid command with a register

address. The command byte contains either control information

or a 5-bit register address. The control commands can also be

used to clear interrupts.

The I²C bus protocol was developed by Philips (now NXP). For

a complete description of the I²C protocol, please review the

NXP I²C design specification at

http://www.i2c-bus.org/references/.

TSL2671 数据表(PDF) 21 Page - OSRAM GmbH