Product Summary

The BCM5220A4KPT is a 10/100BASE-TX single-channel SIGNI-PHY TM transceiver. The BCM5220A4KPT includes a unique Intelligent Power-Management feature that powers down the device if energy is not detected on the cable. This feature is especially useful for portable and power-sensitive applications such as laptop LAN card adapters. The BCM5220A4KPT allows PCMCIA or CardBus adapters to remain plugged in and draw virtually no energy even if the client is no longer connected to the network. Because most laptop users do not remove their LAN PC card when working remotely, this feature results in a noticeably extended battery life for laptop computer users. The BCM5220A4KPT can be set to periodically wake up at a userdefined interval, allowing the product to initiate keep-alive traffic on the network. For lowest power consumption, the BCM5220A4KPT can be put in a power-off state (<2.5 mW).

Features

BCM5220A4KPT features: (1)BCM5220A4KPT-P14 Power supply: 2.5V or 3.3V; (2)Integrated voltage regulator to allow operation from a single supply source; (3)Power consumption: <275 mW; (4)Unique energy detection circuit to enable intelligent power management; (5)Cable length indication; (6)Cable noise level indication; (7)Robust CESD tolerance; (8)Cable length greater than 140 meters; (9)Well under 10 PPM defect ratio quality; (10)±10% voltage tolerance; (11)Industrial temperature range -40 to 85℃; (12)MII and 7-wire serial interface configurable; (13)IEEE 1149.1 (JTAG) scan chain support; (14)MII management via serial port; (15)Pin-compatible with BCM5221.

Diagrams

BCM5220A4KPT block diagram