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 ...
Get HyperTransport™ System Architecture now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
