PD64012中文资料ETC数据手册PDF规格书

[PowerDsine]

描述 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.

特性 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