Wikipedia: http://en.wikipedia.org/wiki/HDMI
HDMI Specification ver. 1.3a http://www.hdmi.org/download/HDMISpecification13a.pdf
Вопрос следующий: Какой максимальный ток можно получить от устройства на пине +5V?
На википедии указали в распиновке макс. 50mA. Надеюсь это опечатка.
А в HDMI Specification ver. 1.3a написано следующее (мой английский не очень хорош, поэтому буду рад, если мне дадут разъяснения):
Цитата
4.2.7 +5V Power Signal
The HDMI connector provides a pin allowing the Source to supply +5.0 Volts to the cable and
Sink.
All HDMI Sources shall assert the +5V Power signal whenever the Source is using the DDC or
TMDS signals. The voltage driven by the Source shall be within the limits specified for TP1
voltage in Table 4-22. An HDMI Source shall have +5V Power signal over-current protection of no
more than 0.5A.
All HDMI Sources shall be able to supply a minimum of 55 mA to the +5V Power pin.
A Sink shall not draw more than 50 mA of current from the +5V Power pin. When the Sink is
powered on, it can draw no more than 10mA of current from the +5V Power signal. A Sink shall
assume that any voltage within the range specified for TP2 voltage in Table 4-22 indicates that a
Source is connected and applying power to the +5V Power signal.
A Cable Assembly shall be able to supply a minimum of 50mA to the +5V Power pin to a Sink,
even when connected to a Source supplying no more than 55mA.
The return for the +5V Power signal is DDC/CEC Ground signal.
The HDMI connector provides a pin allowing the Source to supply +5.0 Volts to the cable and
Sink.
All HDMI Sources shall assert the +5V Power signal whenever the Source is using the DDC or
TMDS signals. The voltage driven by the Source shall be within the limits specified for TP1
voltage in Table 4-22. An HDMI Source shall have +5V Power signal over-current protection of no
more than 0.5A.
All HDMI Sources shall be able to supply a minimum of 55 mA to the +5V Power pin.
A Sink shall not draw more than 50 mA of current from the +5V Power pin. When the Sink is
powered on, it can draw no more than 10mA of current from the +5V Power signal. A Sink shall
assume that any voltage within the range specified for TP2 voltage in Table 4-22 indicates that a
Source is connected and applying power to the +5V Power signal.
A Cable Assembly shall be able to supply a minimum of 50mA to the +5V Power pin to a Sink,
even when connected to a Source supplying no more than 55mA.
The return for the +5V Power signal is DDC/CEC Ground signal.