TS-TPC-7990 TWI

From embeddedTS Manuals
Revision as of 17:45, 17 January 2022 by Lionel (talk | contribs) (Links auto-updated for 2022 re-branding ( https://github.com/embeddedarm/linux-3.10.17-imx6/blob/619e6bf97479243e9d7b7f6b34ce0ae8558ff1fd/Documentation/i2c/dev-interface →‎ https://github.com/embeddedTS/linux-3.10.17-imx6/blob/619e6bf97479243e9d7b7f6b34ce0ae8558ff1fd/Documentation/i2c/dev-interface))
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

The i.MX6 CPU implements a standard I2C interface at 100khz that is compatible with fast mode for 400khz operation. The CPU has 2 I2C buses used on the TS-7990.

I2C 0 is used for many onboard peripherals only, but I2C 1 is unused and brought out to the DIO header pins 1 (DAT) and 3 (CLK).

/dev/i2c-0
Address Device
0x0A SGTL5000 audio codec
0x1C Accelerometer
0x28-0x2F FPGA
0x4A Supervisory Microcontroller
0x5C [1] Capacitive Touch Controller
0x68 RTC
  1. ↑ LXD option only

The kernel I2C device node is available at /dev/i2c-<bus number>. The i2c-tools (i2cdetect, i2cget, i2cset) suite can be used to manipulate the bus. It is also possible to create a custom application using the I2C device interface API.

Retrieved from "http://docs.embeddedTS.com/index.php?title=TS-TPC-7990_TWI&oldid=15056"