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DESIGNING WITH THE MMC2107

by David Gonzales

Start ý System Overview ý On-Chip Memory Arrays ý Receiving and Servicing Real-Time Interrupts ý Asynchronous and Synchronous Communication ý Measuring, Timing, Creating ý Collecting Analog Information ý System Features ý Sources and PDF

COLLECTING ANALOG INFORMATION

ADCs can capture analog signals for audio filtering, noise cancellation, frequency equalization, and waveform analysis. The MMC2107 has a queued ADC, the QADC, which can hold up to 40 command words and 40 10-bit conversion results. Operations can be queued, and the QADC can automatically convert multiplexed analog entries on up to 16 analog input channels.

With additional external multiplexers, you can extend the QADC to service 44 distinct analog channels. You can sample using an external trigger, a QADC timer, or via software. Two queues control the conversion order of the QADC channels. The QADC can sample two channels simultaneously and generate an interrupt for each queue or sub-queue chain. There are 64 result registers that can hold the results from all the channels or repeat multiple measurements from one channel.

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