Digital Signal Processors (dsp) Information

Features and Options
Digital signal processors are available with multiple DMA channels and a variety of I/O ports and interfaces. Some devices also feature an external memory interface that determines the amount of memory a chip can handle. Parallel interfaces include:

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  Universal asynchronous receiver transmitter (UART)
  
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  Universal synchronous asynchronous receiver transmitter (UART) technology
  

Serial interfaces include:

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  Peripheral component interconnect (PCI)
  
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  Universal serial bus (USB)
  
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  Enhanced synchronous serial interface (ESSI)
  
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  Serial communications interface (SCI)
  

The Joint Test Actions Group (JTAG), a standards organization, has developed a test access port (TAP) that allows access to the inner workings of ICs. Inter-IC (I²C) is used to control and monitor applications in communications, computer, and industrial settings. 
Packaging Options
Common package types for digital signal processors include:

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  Ball grid array (BGA)
  
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  Quad flat package (QFP)
  
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  Single in-line package (SIP)
  
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  Dual in-line package (DIP)
  

Many packaging variants are available. In terms of additional features, some DSPs include an internal memory interface, embedded timers, or Flash memory. Other devices include on-chip A/D converters that convert analog inputs into digital signal. 
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