BCM5221A4KPTGT

The BCM5221 is the industry’s lowest-power Fast Ethernet PHY. It features an integrated voltage regulator, and can be supplied by either a 2.5V or 3.3V power source. In addition, the BCM5221 has several intelligent power-down states that conserve power, yet allow products based on it to automatically turn on when needed. The BCM5221 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 BCM5221 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 BCM5221 can be set to periodically wake up at a user-defined interval, allowing the product to initiate keep-alive traffic on the network. For lowest power consumption, the BCM5221 can be put in a power-off state (<2.5 mW).

• Power Supply: 2.5V or 3.3V
• Integrated voltage regulator to allow operation from a single supply source
• Power Consumption: <175 mW
• Unique energy detection circuit to enable intelligent power management
• HP Auto-MDIX
• Cable length indication
• Cable noise level indication
• Robust CESD tolerance
• Cable length greater than 145 meters
• Well under 10 PPM defect ratio quality
• ±10% voltage tolerance
• Industrial temperature range (–40°C to 85°C) package options available
• MII and RMII configurable
• IEEE 1149.1 (JTAG) scan chain support
• MII management via serial port
• Layout compatible with BCM5201
• 10BASE-T/100BASE-TX/FX IEEE 802.3u Fast Ethernet transceiver
• Glueless TX-to-FX media conversion
• 64-pin TQFP with 64-pin BGA package, 48-pin KML package; RoHS 5/6 and 6/6 package options available