[PowerDsine]

Description
PowerDsine’s™ PD64012 Power over Ethernet (PoE) Manager chip integrates power, analog and logic functions into a single 64-pin, plastic pack. It is used in Ethernet switches and Midspans to allow next generation network devices to share power and data over the same cable.

Features
♦ IEEE 802.3af-2003 compliant
♦ Drives 12 independent power ports
♦ Can be cascaded for up to 48 ports, using a master/slave architecture
♦ Supports IETF Power Ethernet MIB (RFC 3621)
♦ Thermal protection per port
♦ Thermal monitoring capabilities
♦ Multi-point resistor detection
♦ Supports DC modulation method under-current detection according to IEEE 802.3af-2003
♦ AC & DC disconnect functions
♦ PD classification function
♦ Operates from single input (44 to 57 V)
♦ I2C bus interface
♦ Supports foldback current limiting
♦ Digitally programmable overcurrent protection per port
♦ Digitally programmable timers
♦ Power management algorithm for up to 48 ports
♦ Internal power-on reset
♦ Power soft-start algorithm
♦ Fast power shutdown, in case of power supply failure
♦ Automatic on/off sequencer for up to 48 ports
♦ Disable/enable power feeding
♦ Continuous port current monitoring
♦ Supports back-off feature for Midspan implementation
♦ Additional features for Enhanced mode:
    • UART interface
    • Pre-standard PD detection
    • Supports non-standard terminals
    • Advanced power management
    • Programmable port matrix