February 2003
Intermediate to advanced
592 pages
11h 47m
English
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Power Requirements
The HT specification defines the link supply voltage requirements and the power consumption allowed by HT transmitters and receivers.
Power Supply Voltage
Single fixed power supply provides power to all the transmitter and receiver circuits. The HT link supply voltage (VLDT, or Voltage Lightning Data Transport) is rated at:
1.2 volts ± 5%
It is possible to have tight tolerance on VLDT (+-5%) on the power supply voltage output because most HyperTransport signals are differential with minimal current transients on simultaneous switching signals. The tight tolerance requirement on the supply voltage ensures that less power supply feedback noise will propagate through the system.
Differential Pair Power Consumption
The power consumption ...
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