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Microprocessor or ASIC - Choice and Implementation, IEE Colloquium on

Date 21 Dec 1988

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Displaying Results 1 - 7 of 7
  • A micropower microprocessor digital indicator

    Publication Year: 1988 , Page(s): 7/1 - 7/2
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (92 KB)  

    The standard method of analogue data transmission in the process control industry for many years has been the 4-20 mA current loop. It was decided to offer a digital variant of this meter which was plug-in compatible with the analogue version. The salient features of the new meter were as follows: full four-digit LCD display with analogue bar-graph; digital display end-points customer programmable... View full abstract»

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  • Gate array or microcontroller? The engineers dilemma. A 4-bit microcontroller replacement case study

    Publication Year: 1988 , Page(s): 2/1 - 2/2
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (84 KB)  

    The microcontroller to be replaced formed the heart of a particular type of telephone, one that could prevent the dialling of unauthorised calls. This product was known as the Securacall, and consisted of a standard push-button telephone with extra circuitry to effect the required functions. It was intended that the replacement version would incorporate extra facilities. To demonstrate the enhance... View full abstract»

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  • Design advantages using logic cell arrays

    Publication Year: 1988 , Page(s): 3/1 - 3/5
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (192 KB)  

    Considers some of the design advantages which can accrue from using field programmable ASICs rather than standard parts. These advantages are illustrated by the description of a typical system design based on the logic cell array, which is a field programmable semi-custom device. The CMOS LCA is unique, in programmable logic array terms, in that the configuration is controlled by the contents of a... View full abstract»

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  • IEE Colloquium on `Microprocessor or ASIC - Choice and Implementation' (Digest No.140)

    Publication Year: 1988
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (20 KB)  

    The following topics were dealt with: ASICs; gate arrays; programmable logic; microprocessor chips; and design engineering View full abstract»

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  • ASIC v. microprocessor-choice and implementation. Case study-TV control

    Publication Year: 1988 , Page(s): 4/1 - 4/2
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (88 KB)  

    The author considers the functionality provided by remote control TV tuner chips and concludes that they are probably overspecified. An understanding of how the specification might be relaxed led to the replacement of one of these ASICs with a mask programmed microcontroller. The benefits were considerable and included: the ability to add unique features to allow the OEM to differentiate his produ... View full abstract»

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  • Case study: design and development of a transcoder chip for CT2

    Publication Year: 1988 , Page(s): 5/1 - 5/6
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (224 KB)  

    Describes a modular design methodology to develop an CMOS ASIC Voice Coder device for use in the CT2 Digital Cordless Telephone Application. It also features complex cells, which can be used in conjunction with other library components, like standard cells, ROM, RAM etc. to create MACROCELLS such as the ADPCM (Adaptive differential pulse code modulation) cell used in the Voice Coder View full abstract»

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  • Case study-speech terminal interface

    Publication Year: 1988 , Page(s): 6/1 - 6/3
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (128 KB)  

    Describes the design of a digital interface for a CCITT High Quality Speech Terminal using DSP techniques to compress 7 kHz bandwidth audio signals into 64 kbit/s. The decision process involved in choosing between two different solutions is described and reasons given for the final compromise. CCITT Recommendation G722 defines the characteristics of an audio coding system which may be used for a w... View full abstract»

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