MAX72420 背板和存儲(chǔ)管理控制器

概述

The MAX72420 is a highly integrated management device intended to provide a cost-effective solution for baseboard, storage, or embedded system management. The device contains a high-performance, 32-bit RISC engine; a 10/100 Ethernet media-access controller (MAC); four master/slave mode I2C interfaces; a high-speed I2C master/slave core; two general-purpose universal asynchronous receiver-transmitters (UARTs); three 32-bit timers; up to 54 bits of general-purpose input/output (GPIO); 64KB of high-speed SRAM; an SPI? memory interface; and an EJTAG port for firmware debug and development. The device optionally supports a configurable low-pin-count (LPC) system interface for applications requiring a direct system connection. The device also supports a connection to a network controller through a reduced media-independent interface (RMII), which can be configured as a network controller-sideband interface (NC-SI). The MAX72420, along with a minimum number of additional components, can be configured to support all management functions, while retaining the flexibility to support a significantly expanded system through various peripheral interfaces.

Because management functions typically require a limited amount of bandwidth and occur relatively infrequently, an embedded RISC engine operating over an SPI memory interface with zero-wait-state internal SRAM for critical code execution provides optimal performance with a low system cost. The MAX72420 also supports the next generation of SPI devices, which can double or quadruple the interface bandwidth by using additional signal pins. Several peripheral functions are included in the device to support a variety of embedded controller requirements. External component requirements are limited to a single SPI flash memory device and I2C peripherals dedicated to system management functions. Additional peripherals can be added through the GPIO interface.

The MAX72420 is available in an 88-ball, chip-scale ball-grid array (CSBGA) package.

關(guān)鍵特性

應(yīng)用/使用

服務(wù)器管理
SES或SAF-TE Over I2C
存儲(chǔ)器機(jī)箱