Hdq/1-Wire Overview - Texas Instruments OMAP5912 Reference Manual

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Pulse Width Time (PWT)

Pulse Width Length (PWL)

HDQ/1-Wire Battery Monitoring Serial Interface

HDQ/1-Wire Overview

This module generates a modulated frequency signal for the external buzzer.

Frequency is programmable between 349 Hz and 5276 Hz with 12 half-tone

frequencies per octave. The volume is also programmable.

This module allows the control of the backlight of the LCD and the keypad by

employing a 4096-bit random sequence. This voltage level control technique

decreases the spectral power at the modulator harmonic frequencies. The

block uses a switchable 32-kHz clock.

The HDQ/1-Wire battery monitoring serial interface module implements the

hardware protocol of the master function of Benchmark's HDQ and Dallas

Semiconductor's 1-Wire protocol.

MPU TIPB (public)

Pin multiplexing for

GPIO11 device pin

OMAP5912 Description

Introduction

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