Table of Contents
Advertisement
No. 2D730-148E*O
4.2.2
VI (Video Interface)
(1)
Outline
The VI (Video Interface) board manages the system images from the BackEnd (BE) board,
overlay graphics from the Realtime Manager (RM) board, and routes the system monitor
video signal to the IO board. The VI also processes the NTSUPAL
video signals in order
to support external OEM devices.
The VI manages the system audio and controls audio
I/O to external devices.
(2)
Functions
The functions implemented
by the VI are outlined below:
l
Video processor display manager (ASIC)
l
Video processor image formatter (FPGA)
l
System video display mode control
l
Variable video resolution control
l
Bidirectional scaling engine for NTSUPAL
l
SVGA RGB encoding for system monitor
l
NTSC/PAL video decoding
l
NTSC/PAL video encoding
l
Simultaneous
S-video, composite,
and RGB analog output for NTSC/PAL
l
System audio control (I/O select, volume/tone
control, LPF, HPF, etc.)
l
Doppler audio D/A conversion
l
System power supply control and status check
l
64 bit, PCI bus interface
l
JTAG boundary scan interface
4-35
Advertisement
Table of Contents
