1.

Functional Description

The PD69101 device has two sections, listed as follows:

• A digital section that controls and monitors the logical PoE functions (state machines, timings, and so on)

• An analog section that performs the front-end analog PoE functionality

The following figure shows the internal functional blocks of the PD69101 device.

Figure 1-1. PD69101 Internal Block Diagram

1.1

Logic Main Control Module

The logic main control block includes the following digital timing mechanisms and state machines, synchronizing, and

activating the PoE functions.

• Real-Time Protection (RTP)

• Start-up macro (DVDT)

• Load signature detection (RES DET)

• Classification macro (CLASS)

• Voltage and current monitoring registers (VMC)

• LEDs stream out control indications

• ADC interfacing

• Direct digital signals with analog block

PD69101

Functional Description

and its subsidiaries

Datasheet

DS00004280A-page 5