TechNexion PICO-IMX6UL-EMMC, Руководство по оборудованию

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PICO-IMX6UL-EMMC REV. A1. HARDWARE MANUAL
– VER 1.00 – MAR 28 2016
Page 32 of 54
3.8. I
2
C Bus
The PICO-IMX6UL-EMMC incorporates several I
2
C interfaces. I
2
C is a two-wire, bidirectional serial
bus that provides a simple, efficient method of data exchange, minimizing the interconnection
between devices. This bus is suitable for applications requiring occasional communications over a
short distance between many devices.
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.MX6Ultralite
Application Processor
Reference Manual”.
Table 16 - I
2
C Bus Signal Description
PIN
CPU
BALL
CPU PAD NAME Signal V I/O Description
E1_41 F17 UART5_TXD I2C2_SCL 1V8 I/O I
2
C bus clock line
E1_43 G13 UART5_RXD I2C2_SDA 1V8 I/O I
2
C bus data line
E1_45 K14 UART1_TXD I2C3_SCL 1V8 I/O I
2
C bus clock line
E1_47 K16 UART1_RXD I2C3_SDA 1V8 I/O I
2
C bus data line
X2_13 L14* GPIO1_IO02 I2C1_SCL 3V3 I/O I
2
C bus clock line
X2_15 L17* GPIO1_IO03 I2C1_SDA 3V3 I/O I
2
C bus data line
NOTE: All 1V8 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-IMX6UL-EMMC module.
NOTE: All 3V3 I
2
C bus data and clock lines for all I
2
C interfaces have 1.5K
Ω pull-up resistors present
on the PICO-IMX6UL-EMMC module.
NOTE: I
2
C1 is connected to the PICO-IMX6UL-EMMC onboard NXP PF3000 Power Management IC
and cannot be set in another pinmux mode.