PD-IM-7608M Eight 2-Pair Ports Evaluation Board
Microsemi Proprietary and Confidential. User Guide Revision 1.0
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Product Overview
The PD-IM-7608M evaluation board is developed based on PD69208M and PD69200 chipsets. PD-IM-
7608M demonstrates the operation of eight 2-pair ports systems; for 4-pair systems, refer to the PD-IM-
7604+4MH or PD-IM-7604+4T4H evaluation boards.
Microsemi's PD69208M Power over Ethernet (PoE) manager IC integrates power, analog, and state-of-
the-art logic into a single 56-pin, plastic QFN package. The device is used in Ethernet switches and
midspans to allow network devices to share power and data over the same cable. The PD69208M device
is an 8-port mixed-signal and high-voltage PoE driver. Together with the PD69200 external MCU, it
perform as a PSE system. Microsemi's PD69200 PoE controller is a cost-effective and pre-programmed
MCU designed to implement enhanced mode.
The PD69208M and PD69200 chipset supports PoE powered device (PD) detection, power-up, and
protection according to IEEE standards as well as legacy/pre-standard PD detection. It provides real-time
PD protection through the following mechanisms: overload, under-load, over-voltage, over-
temperature, and short-circuit, and enables operation in a standalone mode. It also executes all real-
time functions as specified in IEEE802.3at and IEEE802.3af standards.
PD69208M supports supply voltages between 32 V and 57 V without additional power sources. A system
that powers over 4 pairs can be implemented by combining 2 ports of PD69208M, enabling an extra
feature for simple and low-cost high-power PD devices. Ongoing monitoring of system parameters for
the host software is available through communication. Internal thermal protection is implemented in
the chip. The PD69208M is a low power dissipation device that uses internal MOSFETs and internal 100
m sense resistors.
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The PD69200 features an ESPI bus for each PD69208M. It is based on Freescale's Kinetis_L family
MKL15Z128VFM4 embedded with an ARM Cortex™-M0+ core. The PD69200 utilizes an I C or UART
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interface to the host CPU. It is designed to support software field-upgradable through the
communication interface.
The evaluation board, shown in the following illustration, enables PoE designers to evaluate Microsemi's
PoE solution with flexibility and easy configuration. The application circuit of PD69208M and PD69200
chipset is compact in size (highlighted in the white box on board).
