Broadcom BCM5221 Single-Port RMII 10/100BASE-TX Transceiver
Broadcom BCM5221 Single-Port RMII 10/100BASE-TX Transceivers feature an integrated voltage regulator and can be supplied by a 2.5V or 3.3V power source. The BCM5221 series offers low-power Fast Ethernet PHY and incorporates several intelligent power management features, including three low-power modes with varying levels of power dissipation. These devices are capable of powering down when not connected to the network, making them ideal for power-sensitive applications, including portable computer LOMs and PCMCIA/CardBus cards. Broadcom BCM5221 Single-Port RMII 10/100BASE-TX Transceivers can also be set to periodically power up at user-defined intervals, allowing the system to initiate "keep-alive" traffic on the network. For the lowest power consumption, the modules can be put in apower-off state (<2.5mW).
Features
- 2.5V or 3.3V power supply
- Integrated voltage regulator to allow operation from a single supply source
- <175mW power consumption
- Unique energy detection circuit to enable intelligent power management
- HP Auto-MDIX
- Cable length indication
- Cable noise level indication
- Robust CESD tolerance
- <145m cable length
- ±10% voltage tolerance
- Well under 10PPM defect ratio quality
- Industrial temperature range (-40°C to +85°C) option 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
Applications
- Blade servers
- Network interface cards (NICs)
- Routers
- Gaming devices
- Servers
- Switches
Block Diagram
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