broadcom the bcm59101 is a highly integrated quad power source equipment (pse) controller compatible with ieee 802.3af-2003. the controller is the industry first to offer highly integrated architecture with revolutionary enhancements that are targeted at reducing the complexity of power over ethernet (poe) designs. the bcm59101 integrates the following: microcon- troller, power switches, low-loss current sense func- tion, detection, classification, and voltage converters as well as 3.3v bias regulator (dc:dc converter) and ac disconnect functionality. the high level of integration and innovation make the device the most power-efficient integrated ieee 802.3af poe system. the bcm59101 provides a networking-oriented host interface that offers a full suite of power man- agement. this easy-to-use interface can be extended to manage up to 64 cascaded ports through a single host interface. the bcm59101 is designed with robustness and leg- acy support. it offers de tection and classification mechanisms capable of detecting both ieee 802.3af-compatible devices and legacy devices simultaneously. additionally, the bcm59101 is designed and tested to withstand cable discharge events as well as esd events in excess of 2 kv. ? standards support ? ieee 802.3af-2003-compliant ? ieee 802.3af-2003 classification scheme support ? supports pre-ieee 802.3af-2003 legacy detection ? high hardware integration: switches, current sense functionality, microcontroller, and ac and dc disconnect options ? extensive hardware features ? certified by underwriters laboratory (ul) as a current-limiting device per qvgs, so fuses are not necessary. ? 15.4w per port to support poe pds. ? programmable current limit for both ieee 802.3af and extended power ranges. ? low power dissipation eliminating heat sink. ? broadcom serial control (bsc) and uart interface support to the host. ? robust switch protection circuit withstands cable discharge and esd events (cesd). ? real-time current, voltage, and temperature measurements available per port. ? cascading of multiple devices, up to 64 ports support with the option of single hardware and software interface for the host. ? includes four led drivers reporting poe port activity. ? integrated 3.3v buck regulator (dc:dc) to support up to 200 ma. ? overtemperature protection. ? operates from a single 48v supply. ? extensive software features ? self-contained power allocation software. ? integrated four-port power management. ? integrated power management for all ports in cascaded version. ? highest integration allows the following: ? lowest total bom count. ? easier pcb placement and pcb area saving. ? full functionality without external - controller, including power management. ? eliminates need for an external 48v to 3.3v power conversion. overview architectural features benefits quad integrated ieee 802.3af-2003 pse controller and power management system with enhanced capabilities bcm59101 controller and power management technology highlights ? industry-first quad pse control- ler to simplify poe designs ? compatible with other broadcom poe-enabled products ? most power-efficient ieee 802.3af poe system ? user-friendly host interface ? high ieee standards support combined with broad hardware and software integration and features ? supports applications for various markets ? low bom cost enterprise bcm59101 smb service provider ont/onu supported best choice
about broadcom broadcom corporation is a major technology innovator and global leader in semiconductors for wired and wireless communications. broadcom? products enable the delivery of voice, video, data and multimedia to and throughout the home, the office and the mobile environment. we provide the industry's broadest portfolio of state-of-the-art system-on-a-chip and software solutions to manufacturers of computing and networking equipment, digital entertainment and broadband access products, and mobile devices. these solutions support our core mission: connecting everything?. broadcom, one of the world's largest fabless communications semiconductor companies, with 2010 revenue of $6.82 billion, holds more than 4,800 u.s. and 2,000 foreign patents, and has more than 7,800 additional pending patent applications, and one of the broadest intellectual property portfolios addressing both wired and wireless transmission of voice, video, data and multimedia. a fortune 500? company, broadcom is headquartered in irvine, calif., and has offices and research facilities in north america, asia and europe. broadcom may be contacted at +1.949.926.5000 or at www.broadcom.com. broadcom, the pulse logo, connecting everything, and the connecting everything logo are among the trademarks of broadcom corpor ation and/or its affiliates in the united states, certain other countries and/or the eu. any other trademarks or trade names mentioned are the property of their respective owners. april 01, 2011 ? 59101-pb02-r bcm59101 module architecture ? further reduces bom count via 3.3v dc:dc capability to be shared across multiple bcm59101 devices ? eliminates need for a heat sink ? easy layout and design via simple ground/power plane ? works with broadcom poe-enabled products for easy implementation ? architected with system-oriented features to allow for system-level dif- ferentiation, including: ? single point of interface for host hardware and software ? power management across all ports in cascaded configuration ? programmable current limits and dynamic measurement per port ? rapid power-down to support multiple power supply failures ? supports a variety of applications ? routers and switches for enter- prise, smb, soho, and commercial markets ? ethernet midspans ? pse power injectors ? integrated magnetics benefits (cont.) 48v ac disconnect or dc disconnect (one of four ports shown) cesd protection 10-bit adc e-8051 -controller comm (bsc/uart) ram + rom smps control 3.3v bcm59101 to host 5x led control pse pass-fet control 1% current sense vdd vdda sdatain, sdataout, sclkin, sclkout tx rx optos orerin normation part umber BCM59101BKMLG bcm59101
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