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Publication No.
500-9300007876-000
Rev. C.0
Functional Description 77
6.17.5 Power Button
There is a Power (PWR) Button onboard. An external Power Button may be
connected between the appropriate I/O connector at the back side and ground
(GND).
Figure 6-3 Power Button
With a short pressing at the PWR Button, the operating system tries to shut down
the XVR16 to State S5. If the operating system does not react, a long pressing (>5 s)
will shut down the XVR16 to State S5 without operating system support.
State S5 switches off the CPU core power and holds the XVR16 in reset. The state
S5 is indicated at the S-State LED. At this state it is possible to reactivate the
XVR16 with a short press at the PWR Button. The CPU core voltage is switched on
and the board restarts. This power off and power on cycle can be used to reset the
XVR16.
6.17.6 HD Audio
High Definition (HD) Audio is supported on the rear I/O through the P0 VME
connector. The HD Audio controller is in the QM87 Express Chipset, with an
external Audio Codec. These Audio signals can be accessed through a connector
on the transition module. No Audio AMP is required onboard.