Development Introduction:
![](http://img.alicdn.com/imgextra/i4/133416257/T2EKKqXfRbXXXXXXXX_!!133416257.png)
- PCM1792 is a decoding chip with analog and music flavor. The sound is warm, and the emotion of human voice is richer. It is the sound style that many old roast friends like. The sound of sound and more emotional.
- At present, the most commonly used PCM1794, everyone is more familiar. In fact, PCM1794 is a simplified version of PCM1792.
-
- Features of PCM1794:
- Advantages: The circuit structure is simple and does not need to be programmed. According to the official circuit board, the circuit can be sounded correctly. It is relatively easy to do, so the market share is very high.
- Disadvantages: Because of the lack of flexibility of soft control, DSD does not support DSD, cannot adjust the amount of sound, cannot set the filter mode, etc. Once the circuit is done well, it will not be changed, and the sound will be fixed.
-
- Features of PCM1792:
- Advantages: Human voice performance is perfect, and the mid -frequency performance is particularly good. In addition, because of supporting soft control, the red core uses I2C soft control bus,Hardware solutions DSD , Can set the filter mode, aggravate, volume control, etc., with flexible control of internal soft control registers, plus Red Core this decoder has an upgraded function, providing a condition for future depth, customers can remotely self -service upgrade Essence So PCM1792 is a full -featured version of PCM1794.
- Disadvantages: Complex circuits, complex software control, and large development workload.
![](http://img.alicdn.com/imgextra/i4/133416257/T2EKKqXfRbXXXXXXXX_!!133416257.png)
Dimensions:
43cm wide, 7.4cm high, 27cm deep
![](http://img.alicdn.com/imgextra/i4/133416257/T2EKKqXfRbXXXXXXXX_!!133416257.png)
PCM1792 indicator
- Standard input interface: SPDIF, (coaxial, fiber, BNC input, AES digital balance, HDMI source input, USB input)
- Input frequency: 44.1k, 48K, 88.2K, 96K, 176.4K, 192K, 16-24bit automatic identification
- Rating output: 2V RMS / 5.6V PPM
- Frequency response: 5-20kHz+-0.1dB
- Total power:< 25W
- Partial parameters of the chip:
- Digital cut-off filter: -130DB
- Dynamic range: 129DB
- Disctionation: 4.5V RMS, below 0.0005%
![](http://img.alicdn.com/imgextra/i4/133416257/T2EKKqXfRbXXXXXXXX_!!133416257.png)
Feature introduction
- Double PCM1792A decoder, working in a single Mono mode, respectively
- Support PCM / DSD DOP, FPGA Architecture, deep soft control
- Control board and decoding part of independent, digital and simulation separation design, eliminating mutual disturbances
- Input support to 24bit, 192K, all interfaces support PCM, DSD64 DOP input. HDMI input supports DSD64, DSD128 source code and I2S source code
- Simulate full balance and single -end output
- Support PCM volume control, support remote control volume control,DSD non -adjustable volume
- Use AK4118 low jitter receiver
- The op amp uses a full gold -plated socket to replace the op amp freely(Six direct insertion of NE5532 or JRC5532 op amp, customers can also replace other compatible models by themselves)
- 3.2 -inch IPS TFT high -resolution LCD display, 480 x 320
- Support smart firmware upgrade(The decoder design has an SD card slot, which is upgraded by the SD card customer self -service self -service)
![](http://img.alicdn.com/imgextra/i4/133416257/T2EKKqXfRbXXXXXXXX_!!133416257.png)
input Output
- Digital input: coaxial axis, light, AES/EBU digital balance, HDMI source code input
- When HDMI source code input(DSD, I2S passed the 15th instructions of HDMI, high is DSD, low is I2S)
- Simulation output: RCA single -end(Left and right channel output)XLR balance(Left and right channel output)
- Power voltage: 220V AC input
Shipping list:
- Power distribution source line
- A remote control
![](http://img.alicdn.com/imgextra/i4/133416257/T2EKKqXfRbXXXXXXXX_!!133416257.png)
Setting mode:
- Set two filter modes of PCM1792(Sharp Rolloff Essence Slow Rolloff -Slow Rolling)
- (DSD songs cannot be adjusted)
![](http://img.alicdn.com/imgextra/i2/133416257/O1CN01egX24G1w5kpujw4jc_!!133416257.png)
![](http://img.alicdn.com/imgextra/i2/133416257/O1CN01M86o1U1w5kpzaYp3C_!!133416257.jpg)
![](http://img.alicdn.com/imgextra/i4/133416257/O1CN012A4XV31w5kpyEt4fM_!!133416257.jpg)
![](http://img.alicdn.com/imgextra/i2/133416257/O1CN01XxZ30P1w5kq0mUV0i_!!133416257.jpg)
![](http://img.alicdn.com/imgextra/i2/133416257/O1CN01FlkOEx1w5kpzdfu5j_!!133416257.jpg)
![](http://img.alicdn.com/imgextra/i1/133416257/O1CN01DCgfPY1w5kpoqwxGU_!!133416257.jpg)
![](http://img.alicdn.com/imgextra/i1/133416257/O1CN010Wa4B01w5kv2Cqor9_!!133416257.jpg)
![](http://img.alicdn.com/imgextra/i2/133416257/O1CN01iJs3YH1w5kponrLmc_!!133416257.png)
![](http://img.alicdn.com/imgextra/i1/133416257/O1CN011w5keXj0Qn68SdO_!!133416257.jpg)