Analog Subsystem Block Diagram - Texas Instruments Concerto F28M35 Series Technical Reference Manual

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10.1 Overview

The analog subsystem consists of dual 12-bit ADC modules and six comparators with six internal 10-bit

DACs. Each ADC module block has two sample and hold circuits and three comparators plus three

internal 10-bit DACs.

The analog subsystem is accessed by the analog common interface bus (ACIB). The ACIB is responsible

for transferring triggers initiated by the control subsystem to the analog subsystem and transferring

interrupts initiated by the analog subsystem to both the master subsystem and control subsystem. The

ACIB also transfers analog register read and write data and ADC conversion results.

shows the block diagram of the analog subsystem.

Notice in the figure that ADC2 channel A1 is internally connected to ADC1 channel A0, and ADC1 channel

A1 is internally connected to ADC2 channel A0. ADC2 channel B1 is internally connected to ADC1

channel B0, and ADC1 channel B1 is internally connected to ADC2 channel B0.

10.2 Analog Common Interface Bus (ACIB)

The ACIB handles all interaction between the analog subsystem and the digital subsystem (where digital

subsystem includes the master and control subsystems). A simplified model of the ACIB is shown in

and the signals are defined in

SPRUH22I – April 2012 – Revised November 2019

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Figure 10-1. Analog Subsystem Block Diagram

Master Subsystem

Control Subsystem

Analog Subsystem

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