Audio Output; Audio Dacs; System Block Diagram - Hitachi HTD-K185UK Service Manual

200 ADIN
201 RFSUBI
202 TEZISLV
203 TEI
204 CSO
205 FEI
206 RFLEVEL
207 RFRP DC
208 RFRP AC
209 HRFZC
210 PWMVREF
211 PWM2VREF
212 ADCVDD3
213 RFDTSLVP
214 RFDTSLVN
215 RFIN
216 RFIP

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
Analog Input General A/D input
Analog Input RF subtraction signal input terminal
Analog Input Tracking error zero crossing low pass input
Analog Input Tracking error input
Analog Input Central servo input
Analog Input Focus error input
Analog Input Sub beam add input or RFRP low pass input
A Input RF ripple detect input
Analog Input RF ripple detect input (through AC coupling)
Analog Input High frequency RF ripple zero crossing
A Input A reference voltage input for PWM circuitry. A typical value of 4.0 v
A Input A reference voltage input for PWM circuitry. A typical value of 2.0 v
Power 3.3V power pin for ADC circuitry
Analog Output Positive RF data slicer level output
Analog Output Negative RF data slicer level output
Analog Input Negative input of RF differential signal
Analog Input Positive input of RF differential signal