Pga Driver - Freescale Semiconductor DSP56800E User Manual

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PGA Driver

This section describes the API of MC56F800x Programmable Gain Amplifier (PGA) on-chip

module. The functionality of the PGA module itself is described in the 56F800x Peripheral

Reference Manual.

Introduction

The MC56F800x devices have one Programmable Gain Amplifier module. The PGA module

contains three control registers CNTL0, CNTL1, CNTL2 and one status register STS. The PGA

module controls a sample and hold differential amplifier. In the sample and hold differential

amplifier can be set up amplifier gain to 1 or 2. The PGA module controls another two differential

amplifiers, where amplifier gain can be set up to 1, 2, 3 or 4. The maximum amplifier gain of the

PGA module can be set up to 32. See the 56F800x Peripheral Reference Manual for more

This section describes the PGA driver software, providing the low level software layer interfacing

hardware with software.

Quick Reference

This section is intended as a source of quick access information, while the details are discussed in

Section 5.11.3.

Module base address

PGA0 (PGA_BASE)

PGA1 (PGA_BASE)

API Definition

The following header files are needed in order to use the PGA device driver:

Required Header File(s):

#include "qs.h"

#include "pga.h"

The following information may be found in the header file pga.h.

Public Data Structure(s):

FREESCALE SEMICONDUCTOR

Table 5-361. PGA Module Base Address

Targeting 56F8xxx Platform

MC56F802x/3x

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