|DAC3151||Single 14-/12-/10-Bit 500 MSPS Digital-to-Analog Converters|
|DAC3151 Datasheet PDF : 57 Pages |
SLAS959A – AUGUST 2013 – REVISED AUGUST 2013
• alarm_from_iotest. Occurs when the input data pattern does not match the pattern key.
To prevent unexpected DAC outputs from propagating into the transmit channel chain,
DAC3151/DAC3161/DAC3171 includes a feature that disables the outputs when a catastrophic alarm occurs.
The catastrophic alarms include FIFO pointer collision, the loss DACCLK or the loss of DATACLK. When any of
these alarms occur the internal TXenable signal is driven low, causing a zeroing of the data going to the DAC in
<10T. One caveat is if both clocks stop, the circuit cannot determine clock loss so no alarms are generated;
therefore, no zeroing of output data occurs.
Copyright © 2013, Texas Instruments Incorporated
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