REL 1.2
Page 23 of 56
i.MX6 SODIMM SOM Hardware User Guide
iWave Systems Technologies Pvt. Ltd.
2.6.16
I2C Interface
i.MX6 SODIMM SOM supports two I2C interface on SODIMM Edge connector. i.MX6
CPU’s I2C1
and I2C3.channels
are used for general purpose I2C interface which is compatible with the standard NXP I2C bus protocol. It supports
standard mode with data transfer rates up to 100kbps and Fast mode with data transfer rates up to 400kbps.
Since flexible I2C standard allows multiple devices to be connected to the single bus, i.MX6
CPU’s I2C1
and I2C3 can
be connected to more than one device on the carrier board. I2C1 interface is also connected to On-SOM PMIC with
I2C address 0x08 in the i.MX6 SODIMM SOM.
For more details, refer SODIMM Edge connector pins 18 & 19 for I2C1, pins 115 & 116 for I2C3 on
2.6.17
PWM Interface
i.MX6 SODIMM SOM supports four PWM interface on SODIMM Edge connector. i.MX6
CPU’s PWM1
PWM2, PWM3
and PWM4 module are used for PWM interface which has a 16-bit counter and optimized to generate sound from
stored sample audio images and it can also generate tones. It uses 16-bit resolution and a 4 x 16 data FIFO.
For more details, refer SODIMM Edge connector pins 125, 138, 141, & 147 on
2.6.18
GPIO Interface
Most of the i.MX6 CPU Pins which are connected to SODIMM Edge connector can be configured as GPIO with
interrupt capable (if not used as other interface). i.MX6 CPU GPIO controller provides dedicated general-purpose
pins that can be configured as either inputs or outputs. When configured as an output, it is possible to write to an
internal register to control the state driven on the output pin. When configured as an input, it is possible to detect
the state of the input by reading the state of an internal register. In addition, the GPIO peripheral can produce Core
interrupts.
2.6.19
JTAG Interface
i.MX6 SODIMM SOM supports one JTAG interface on SODIMM Edge Connector. i.MX6 CPU implements JTAG
Security modes internal to System JTAG Controller. The System JTAG Controller provides debug and test control with
the maximum security. The test access port is designed to support features compatible with the IEEE Standard
1149.1 v2001 (JTAG). The SJC module of the processor provides the bridge between external development and test
instrumentation and the internal JTAG-accessible debug and test resources.
For more details, refer SODIMM Edge connector pins 191, 193, 195, 197 & 199 on