Texas Instruments RM46L852 User Manual

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RM46L852
SPNS185 –SEPTEMBER 2012 www.ti.com
4.17 Real Time Interrupt Module
The real-time interrupt (RTI) module provides timer functionality for operating systems and for
benchmarking code. The RTI module can incorporate several counters that define the timebases needed
for scheduling an operating system.
The timers also allow you to benchmark certain areas of code by reading the values of the counters at the
beginning and the end of the desired code range and calculating the difference between the values.
4.17.1 Features
The RTI module has the following features:
• Two independent 64 bit counter blocks
• Four configurable compares for generating operating system ticks or DMA requests. Each event can
be driven by either counter block 0 or counter block 1.
• Fast enabling/disabling of events
• Two time-stamp (capture) functions for system or peripheral interrupts, one for each counter block
4.17.2 Block Diagrams
Figure 4-18 shows a high-level block diagram for one of the two 64-bit counter blocks inside the RTI
module. Both the counter blocks are identical except the Network Time Unit (NTUx) inputs are only
available as time base inputs for the counter block 0.
Figure 4-18. Counter Block Diagram
102 System Information and Electrical Specifications Copyright © 2012, Texas Instruments Incorporated
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Texas Instruments RM46L852 Specifications

General

Brand	Texas Instruments
Model	RM46L852
Category	Microcontrollers
Language	English

Summary

RM46L852 16/32-Bit RISC Flash Microcontroller

Features

Device Operating Conditions

Absolute Maximum Ratings Over Operating Free-Air Temperature Range

Defines the absolute maximum limits for voltage, current, and temperature to prevent device damage.

Device Recommended Operating Conditions

System Information and Electrical Specifications

Power Sequencing and Power On Reset

ARM Cortex-R4F™ CPU Information

Provides detailed information on the ARM Cortex-R4F CPU features, architecture, and dual-core implementation.

Device Memory Map

Flash Memory

Covers flash memory configuration, features, ECC protection, and access speeds.

Vectored Interrupt Manager

Error Signaling Module

Peripheral Information and Electrical Specifications

Enhanced Translator PWM Modules (ePWM)

Details the ePWM modules, their interconnections, clocking, synchronization, and trip zones.

ADC Electrical and Timing Specifications

Provides MibADC overview, event trigger options, electrical characteristics, and timing specifications.

Enhanced High-End Timer (N2HET)

Covers N2HET features, RAM organization, input timing, synchronization, checking, and disabling outputs.

Controller Area Network (DCAN)

Multi-Buffered / Standard Serial Peripheral Interface

Universal Serial Bus Controller

Details USB controller features, including device and host ports, and interface timing specifications.