2.3

ESS TECHNOLOGY, INC. 109 Bonaventura Drive, San Jose, CA 95134, USA Tel (408) 643-8800 WWW.ESSTECH.COM

COM

15

ES9018S Product Datasheet

Serial Control Interface

The registers inside the chip are programmed via an I2C interface. The diagram below shows the timing for this interface. The chip address can be

set to 2 different settings via the “ADDR” pin. Table 7 below summarizes this.

ADDR CHIP ADDRESS

0

0x90

1

0x92

Figure 5 - I2C Addresses

Notes:

The “ADDR” pin is used to create the CHIP ADDRESS. (0x90, 0x92)

The first byte after the chip address is the “ADDRESS” this is the register address.

The second byte after the CHIP ADDRESS is the “DATA” this is the data to be programmed into the register at the previous “ADDRESS”.

Compatible with I2C-bus specification version 2.1 Standard-mode/Fast-mode.