Structure and Assembly/Disassembly of the Machine
2.1.1.8Post-processing and display circuit
The Cine review and post-processing circuit is realized by EP1K100FC484-3.
The image effect is realized by means of the look-up table. One
IS61LV25616L
（
256K*16
）
is used as graphics memory in the graphics circuit, and the
CPU can directly access the graphics memory. One IS61LV25616L
（
256K*16
）
is used
as buffer in the transform circuit of Vga to Video. The THS5641 is used as VGA DAC, as
well as VIDEO DAC. Since the two-channel VIDEO signal is to be driven, the output of
VIDEO DAC is to be driven by a two-channel amplifier. The LM6181 is used as the
amplifier. This circuit adopts the 25MHz clock. The post-processing diagram is shown as
follows:
Figure 3-8 Schematic diagram of Cine review
2.1.2Working principle of CPU
The computer system is the control core of the complete machine, and its hardware
DP-3300/DP-3200 Service Manual（V1.1） 3-11
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