Hitachi HTD-K180E, Руководство по обслуживанию

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interface controls access to both external SDRAM memories, which can be the sole unified external read/write
memory acting as program and data memory as well as various decoding and display buffers.
1.3 DRIVE INTERFACES
The MT1379 supports the DV34 interface, and other RF and servo interfaces used by any types of DVD loaders .
These interfaces meet the specifications of many DVD loader manufacturers.
1.4 FRONT PANEL
The front panel is based around an Futaba VFD and a common NEC front panel controller chip, (uPD16311).
The MT1379 controls the uPD16311 using several control signals, (clock, data, chip select). The infrared remote
control signal is passed directly to the MT1379 for decoding.
1.5 REAR PANEL
A typical rear panel is included in the referance design. This rear panel supports:
- Six channel or two channel audio outputs.
- Optical and coax S/PDIF outputs.
- Composite, S-Video, and SCART outputs .
The six-video signals used to provide CVBS, S -Video, and RGB are generated by the MT1379’s internal video
DAC. The video signals are buffered by external circutiry.
The S/PDIF serial stream is also generated by the MT1379 output by the rear panel. AK4382, CS4392 Audio
DACs are used for two channel audio output with MT1379.
12-pin DDX board output jack gives out the amplified audio. Digital Audio is processed in the DDX-8228 IC
and then amplified in the DDX-2050 Power Amplifier ICs.