Hitachi HTD-K185UK, Руководство по обслуживанию

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200 ADIN Analog Input General A/D input
201 RFSUBI Analog Input RF subtraction signal input terminal
202 TEZISLV Analog Input Tracking error zero crossing low pass input
203 TEI Analog Input Tracking error input
204 CSO Analog Input Central servo input
205 FEI Analog Input Focus error input
206 RFLEVEL Analog Input Sub beam add input or RFRP low pass input
207 RFRP DC A Input RF ripple detect input
208 RFRP AC Analog Input RF ripple detect input (through AC coupling)
209 HRFZC Analog Input High frequency RF ripple zero crossing
210 PWMVREF A Input A reference voltage input for PWM circuitry. A typical value of 4.0 v
211 PWM2VREF A Input A reference voltage input for PWM circuitry. A typical value of 2.0 v
212 ADCVDD3 Power 3.3V power pin for ADC circuitry
213 RFDTSLVP Analog Output Positive RF data slicer level output
214 RFDTSLVN Analog Output Negative RF data slicer level output
215 RFIN Analog Input Negative input of RF differential signal
216 RFIP Analog Input Positive input of RF differential signal
2.2 System Block Diagram
A sample system block diagram for AV1100 board design is shown in the following figure:
3. AUDIO OUTPUT
The MT1379 supports two-channel and six-channel analog audio output. In a system
configuration with six analog outputs, the front left and right channels can be configured
to provide the stereo (2 channel) outputs and Dolby Surround, or the left and right front
channels for a 5.1 channel surround system.
The MT1379 also provides digital output in SPDIF format. The board supports both
optical and coaxial SPDIF outputs,
4. AUDIO DACS
The MT1379 supports several variations of an PS type bus, varying the order of the
data bits (leading or no leading zero bit, left or right alignment within frame, and MSB or