PD-IM-7508 Evaluation Board - User Guide
Copyright © 2013
Microsemi
6
Rev 0.1 / 04 Aug 2013
Analog Mixed Signal Group
1 Enterprise, Aliso Viejo, CA 92656, USA; Phone (USA): (800) 713-4113, (ROW): (949) 221-7100 Fax: (949) 756-0308
2.1 Hardware Block Diagram Description
The block diagram shown in Figure 2 illustrates the 8-port Evaluation Board. A single PD39100 microcontroller unit
(PoE Controller) is connected to a single PD69108 PoE device. As shown in the figure, the PoE Controller controls
and monitors the PoE device using an isolated ESPI bus. Communication with PoE controller is done by a serial
communication interface (UART by USB). EVB can be powerd by an external power supply or by another 4pairs
PSE port.
Host
Serial
Comm
Peripherals,
LEDs
DC in via J1
Connector
PoE Controller
PD39100
/
DC DC
Converter
Channels 0-7
ESPI
Isolation
PD69108
ESPI BUS
Isolated
ESPI BUS
DC in via PoE
Port – CON1
PD70200
PD70200
Figure 2: System Configuration
2.2 Evaluation Board/System Ordering Information
The following table lists EVB ordering information.
Ordering Number
Description
PD-IM-7508
8-port Power over Ethernet (PoE) based on Microsemi’s PoE Devices
(PD39100 & PD69108)
2.3 Evaluation System Features
Single RJ45 gang (contain 8 X RJ45 connectors)
Switch domain isolated from PoE domain
Switch domain USB interface
External power supplies interface
PoE Controller Manual Reset (on motherboard)
There are no pulse transformers & common mode chocks per port
