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4 eeprom, 4 video, 5 audio – Artesyn COMX-P1022 Installation and Use (July 2014) User Manual

Page 60: 6 i2c, 1 i2c bus, 4 video 4.5 audio 4.6 i2c, Table 4-1, I2c#1 address distribution

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Functional Description

COMX-P1022 COM Express Module Installation and Use (6806800M04C)

60

4.3.4

EEPROM

COMX-P1022 COM Express Module uses two 256x8(2 Kb) I2C EEPROM for boot up
configuration.

4.4

Video

COMX-P1022 COM Express Module supports the following:

DVI

LVDS

4.5

Audio

COMX-P1022 supports an I2S/SSI interface to COM-Express.

4.6

I2C

4.6.1

I2C Bus

There are two I2C buses included in P1022 (I2C#1 and I2C#2).

I2C input clock is equal to platform frequency / 2, which is 266MHz. The desired I2C SCL
frequency is 400KHz so the clock divisor is 667.

There is one device attached to I2C#1 and 5 devices attached to I2C#2. The following tables
describe the I2C buses and devices:

Table 4-1 I2C#1 Address Distribution

IIC1

ADDRESS

EEPROM

0XA0