描述 Description

The SCF5250 was designed as a system controller/decoder for compressed audio music players (MP3, WMA, OggVorbis, etc.), addressing both portable and automotive solutions supporting CD-and HDD-based systems. The 32-bit ColdFire? V2 core with enhanced multiplier-accumulator (eMAC) unit provides optimum performance and code density for the combination of control code and signal processing required for compressed audio decode, file management and system control. The SCF5250 is also an excellent general purpose system controller with over 107 (Dhrystone 2.1) MIPS @ 120 MHz performance and a competitive price. The integrated peripherals and eMAC allow the SCF5250 to replace both the microcontroller and the DSP in certain applications. Most peripheral pins can also be remapped as general purpose I/O (GPIO) pins.

特性 Features

? Coldfire V2 processor core operating at 120 MHz
? eMAC
? 8 KB direct mapped instruction cache
? 128 KB static random access memory (SRAM) (two 64KB banks)
? Operates from internal or external crystal oscillator
? Supports 16-bit wide synchronous dynamic random access memory (SDRAM)
? Debug module (background and real-time)
? Two independent universal asynchronous receiver and transmitter(UARTs)
? Two I2C modules
? Queued serial peripheral interface (QSPI) (master only)
? Digital audio transmitter (SPDIF) and two receivers compliant with IEC958 audio protocol
? CD-ROM and CD-ROM XA block decoding and encoding function
? Two independent 16-bit timers
? System integration (pulse-lock loop, software watchdog)
? Four-channel direct memory access (DMA)
? Six-channel 12-bit analog-to-digital converter (ADC)
? IDE or SmartMedia? interface
? Flash memory card interface
? GPIO
? 1.2-volt core, 3.3-volt input/output