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TMS320C5505

TITMS320C5505

Texas Instruments
Another member of the C55x fixed-point family useful for lower-cost or simpler audio DSP designs.
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Overview

The TMS320C5505 is a high-performance, ultra-low-power fixed-point Digital Signal Processor (DSP) based on the C55x CPU core. Operating at up to 150MHz, it features 320kB of on-chip RAM and a dedicated FFT hardware accelerator to offload complex arithmetic tasks. This processor is specifically designed for applications requiring high computational efficiency with minimal power consumption, such as portable audio and voice processing.

Why Choose This Part

The C55x architecture provides two ALUs and five internal data buses, allowing for high instruction throughput per clock cycle. Its ultra-low power profile, featuring core power consumption as low as 0.15 mW/MHz, significantly extends battery life in portable designs. The integration of 320kB RAM and a bootable ROM reduces external component count and PCB complexity.

Applications

Portable Audio Players
Utilizes the low power consumption and integrated I2S interfaces for high-fidelity mobile audio playback.
Voice Recognition Systems
The FFT hardware accelerator enables real-time spectral analysis for speech processing and keyword spotting.
Software Defined Radio (SDR)
The multiple data buses and ALU architecture support efficient baseband signal processing.
Medical Monitoring
Ideal for battery-operated biometric devices that require digital filtering of sensor data via the 10-bit SAR ADC.

Key Specifications

Type Fixed Point
Interface EBI/EMI, I2C, I2S, MMC/SD, SPI, UART/USART, USB
Clock Rate 150MHz
On-Chip RAM 320kB
Mounting Type Surface Mount
Voltage - I/O 1.8V, 2.5V, 2.8V, 3.3V
Package / Case 196-LFBGA
Voltage - Core 1.05V, 1.40V
Non-Volatile Memory ROM (128kB)
Operating Temperature -10degC ~ 70degC (TC)
Supplier Device Package 196-NFBGA (10x10)

Getting Started

Development typically requires Texas Instruments Code Composer Studio (CCS) and a compatible JTAG emulator for debugging. The TMDX5505EZDSP USB Stick is a common entry point for evaluation, providing an integrated debugger and access to the DSP's peripheral pins. Engineers should leverage the C55x Chip Support Library (CSL) to quickly configure the I2C, SPI, and USB interfaces.