TechNexion PICO-IMX6, Hardware Manual

Page: 42 / 64

PICO-IMX6 REV. A1. HARDWARE MANUAL
– VER 1.01 – JAN 28 2016
Page 42 of 64
3.15. I
2
C Bus
The PICO-IMX6 I
2
C interfaces are implemented with the i.MX6 integrated I
2
C controller. There are two
general purpose I 2 C interfaces and one I 2 C interface dedicated towards display and system management
functions.
The following features are supported:

Compliance with Philips I
2
C specification version 2.1

Multiple-master operation

Support for standard mode (up to 100K bits/s) and fast mode (up to 400K bits/s)

Arbitration-lost interrupt with automatic mode switching from master to slave
For additional details, please refer to the “I2C Controller (I2C)” chapter of the “i.MX6 Reference Manual”.
Table 21 - I
2
C Bus Signal Description
PIN
CPU
BALL
CPU PAD NAME Signal V I/O Description
X2_13 U5 KEY_COL3 I2C2_SCL 3V3 I/O I
2
C bus clock line
X2_15 T7 KEY_ROW3 I2C2_SDA 3V3 I/O I
2
C bus data line
E1_41 H20 EIM_D21 I2C1_SCL 1V8 I/O I
2
C bus clock line
E1_43 G23 EIM_D28 I2C1_SDA 1V8 I/O I
2
C bus data line
E1_45 F21 EIM_D17 I2C3_SCL 1V8 I/O I
2
C bus clock line
E1_47 D24 EIM_D18 I2C3_SDA 1V8 I/O I
2
C bus data line
NOTE: All I
2
C bus data and clock lines for all I
2
C interfaces have 2.2K
Ω pull-up resistors present on the
PICO-IMX6 module.
NOTE: It is recommended to use I2C2 signals for HDMI EDID functionality and set these pins in software
DDC mode.