DRA722_17 Datasheet, PDF (246/408 Pages) Texas Instruments – Infotainment Applications Processor

DRA722, DRA724, DRA725, DRA726
SPRS956B – MARCH 2016 – REVISED JANUARY 2017
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(1) Some signals listed are virtual functions that present alternate multiplexing options. These virtual functions are controlled via
CTRL_CORE_ALT_SELECT_MUX or CTRL_CORE_VIP_MUX_SELECT registers. For more information on how to use these options,
please refer to Device TRM, Chapter Control Module, Section Pad Configuration Registers.
7.12 Timers
The device has 16 general-purpose (GP) timers (TIMER1 - TIMER16), two watchdog timers, and a 32-kHz
synchronized timer (COUNTER_32K) that have the following features:
• Dedicated input trigger for capture mode and dedicated output trigger/pulse width modulation (PWM)
signal
• Interrupts generated on overflow, compare, and capture
• Free-running 32-bit upward counter
• Supported modes:
– Compare and capture modes
– Auto-reload mode
– Start-stop mode
• On-the-fly read/write register (while counting)
The device has two system watchdog timer (WD_TIMER1 and WD_TIMER2) that have the following
features:
• Free-running 32-bit upward counter
• On-the-fly read/write register (while counting)
• Reset upon occurrence of a timer overflow condition
The device includes one instance of the 32-bit watchdog timer: WD_TIMER2, also called the MPU
watchdog timer.
The watchdog timer is used to provide a recovery mechanism for the device in the event of a fault
condition, such as a non-exiting code loop.
NOTE
For additional information on the Timer Module, see the Device TRM.
7.13 Inter-Integrated Circuit Interface (I2C)
The device includes 6 inter-integrated circuit (I2C) modules which provide an interface to other devices
compliant with Philips Semiconductors Inter-IC bus (I2C-bus™) specification version 2.1. External
components attached to this 2-wire serial bus can transmit/receive 8-bit data to/from the device through
the I2C module.
NOTE
Note that, on I2C1 and I2C2, due to characteristics of the open drain IO cells, HS mode is
not supported.
NOTE
Inter-integrated circuit i (i=1 to 6) module is also referred to as I2Ci.
NOTE
For more information, see the Multimaster High-Speed I2C Controller section of the Device
TRM.
246 Timing Requirements and Switching Characteristics
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