Digital to Analog Interface for Simultaneous Analog Outputs.
DEPARTMENT OF THE NAVY WASHINGTON DC
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Interface circuitry for obtaining simultaneous, multi-channel analog outputs from a microprocessor, avoiding sequential addressing delays. The technique involves inserting, for each analog output channel, a buffer latch between the data bus lines from the microprocessor and the DA latch associated with the DA converter. The buffer latches are sequentially addressed by control logic circuitry and loaded from the computer memory in accordance with software instructions in the microprocessor. While data is being loaded in the buffer latches, the DA latches are disabled, preventing the data from being presented to the DA converters. When all channels are loaded, the DA latches are strobed simultaneously, enabling them and transferring the data stored in the buffer latches to the DA converters for conversion to analog outputs. Author
- Computer Hardware