Embedded Processing and DSP
October 2009
The ADSP-2146x fourth-generation SHARC
Processors offer a high-performance core, plus application- and audio-specific peripherals, making them ideal for professional and automotive audio applications. Their single-instruction, multiple-data (SIMD) core supports 32-bit fixed-point and 32-/40-bit floating-point arithmetic formats—performing at up to 2.7 GFLOPS and 900 MMACS with a 450-MHz clock. The DMA controllers support 67 channels, each of which can transfer 32-bit serial data at peripheral clock speed without slowing processor execution. The digital audio interface (DAI) includes eight serial ports, four precision clock generators, an input data port, an S/PDIF transceiver, and a flexible signal-routing unit (SRU). The digital peripheral interface (DPI) includes two SPI ports, two timers, a UART, a DTCP cipher, and a 2-wire interface. Two 8-bit, bidirectionally programmable link ports can connect to the link ports of other DSPs or peripherals. 5 Mbits of RAM and 4 Mbits of ROM are included on-chip. The following table compares the various models.
Model/Parameter | Frequency (MHz) | ROM (bits) | Digital Content Transmission Protocol (DTCP) | Media Local Bus (MLB) | Automotive Applications | Temperature Range (°C) |
400 | N/A | Yes | Yes | Yes | –40 to +85 | |
400 | 4M | Yes | Yes | Yes | –40 to +85 | |
450 | 4M | No | No | No | 0 to +70 | |
450 | N/A | No | No | No | 0 to +70 | |
400 | N/A | No | Yes | Yes | –40 to +85 |
http://www.analog.com/library/analogDialogue/pre_release_products.html#dsp