www.ti.com
Resetting or Disabling the I2C Module
631
SPRUI07–March 2020
Submit Documentation Feedback
Copyright © 2020, Texas Instruments Incorporated
Inter-Integrated Circuit Module (I2C)
Figure 11-17. I2C_FIFO_interrupt
11.5 Resetting or Disabling the I2C Module
You can reset or disable the I2C module in two ways:
• Write 0 to the I2C reset bit (IRS) in the I2C mode register (I2CMDR). All status bits (in I2CSTR) are
forced to their default values, and the I2C module remains disabled until IRS is changed to 1. The SDA
and SCL pins are in the high-impedance state.
• Initiate a device reset by driving the XRS pin low. The entire device is reset and is held in the reset
state until you drive the pin high. When the XRS pin is released, all I2C module registers are reset to
their default values. The IRS bit is forced to 0, which resets the I2C module. The I2C module stays in
the reset state until you write 1 to IRS.
The IRS must be 0 while you configure or reconfigure the I2C module. Forcing IRS to 0 can be used to
save power and to clear error conditions.
To Next Page
Loading...
Need help?
General
