LED171596ARSLR datasheet(24/153 Pages) TI1

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ADDR

Pin [1]

ADDR

Pin [1]

Reg Addr MSB

R/W

Upper 4 bits are fixed

Lower 2 bits are selected with

ADDR pin

One bit used for register

address MSB (bit 9)

9-bit ADDRESS

READ bit

SCK

MOSI

MISO

10-bit DATA1

10-bit DATA2

End of Tri-State

9-bit ADDRESS

10-bit DATA1

WRITE bit

SCK

MOSI

10-bit DATA2

LED171596A

SNVSAY2 – OCTOBER 2017

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Programming (continued)

Figure 20. SPI Write

Figure 21. SPI Read

7.5.1.2 I2C-Compatible Interface

Up to three LED171596A slave devices may share the same I2C bus. The first 8 bits of the I2C transaction are

divided into bits for the slave ID, one bit for the register address MSB, and the read/write bit. The MISO_ADDR

pin is used to select the unique I2C slave address for each device. Every device also uses a single common I2C

address so that host can write data to all devices at the same time. This option can be used to write LATCH

command to all devices simultaneously.

Figure 22. I2C Slave Address Diagram

The LED171596A uses a 6-bit slave ID. The 4 upper bits of the slave ID are fixed to 0101 and the 2 lower bits

are defined by the status of the MISO_ADDR pin of each device. The MISO_ADDR pin can be tied to ground,

tied to VDDIO, or left unconnected to select between three unique device slave addresses.

Table 5. Slave Addresses

MISO_ADDR STATE

LOWER SLAVE ID BITS

BASE 8-BIT DEVICE

ADDRESS

GND

50h

VDDIO

54h

OPEN

58h

LED171596ARSLR Datasheet(PDF) 24 Page - Texas Instruments

LED171596ARSLR Datasheet(HTML) 24 Page - Texas Instruments

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