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High-Precision Clock Board V6 and SPDIF Output Board for CD CD-ROM Turntable DIY Projects
Description:
The clock board has been updated to V6 with a dedicated PLL circuit added to shape the 192K signal.
The shaping function is described as follows:
S4 Disconnected:
- The frequency of use of the shaping function of SPDIF Group A and SPDIF Group B is determined by S3
S4 Short-circuited:
- S3 shaping frequency selection fails, and the shaping frequency is determined by SW0 and SW1 short-circuit points.
Specific Settings are as follows:
J4 is the specific frequency output used by the PLL, if you have a frequency meter or oscilloscope, you can measure the specific value.
This version separates the clock processing circuit and the output circuit, which is more convenient for users to DIY and makes it more professional. The clock board and output board can be easily connected.
The board adopts the gold immersion process to enhance the performance of the board in the high-frequency working state. PCB use circular traces.
With customized 0.3PPM 33.8688MHz TCXO
Independent output board supports coaxial RS422 0.5V level, TTL level, optical output, AES balanced output
The input SPDIF sample rate supports 44.1KHz~192KHz, and the maximum output of optical fiber supports 96K SPDIF!
The capacitors of the board are all made of X7R COG capacitors for Murata to ensure signal quality
Module Parameters:
I. Clock Board:
1. Master oscillator: 0.3ppm 3.3V 33.8688MHz high-precision active crystal oscillator
2. Using CPLD divide to process the output 33.8688MHz, 16.9344MHz, 11.2896MHz, 8.4672MHz, 176.4K, 44.1K
3. Output frequency voltage is suitable for 3.3V and 5V systems
4. The SPDIF shaping signal is processed by shaping software for DSIX
5. SPDIF DSIX can choose 33.8688MHz, or 16.9344MHz shaping
6. Support external clock input
7. Support external clock power supply
8. Support input 2 groups of SPDIF signals
II. SPDIF Output Board:
1. Output support coaxial, optical fiber output; 50 ohm BNC coaxial transmission is recommended
2. Input DC 5V
3. Support 44.1K~192K SPDIF signal
4. Use DS8921 as input and output buffer
5. Support TTL level and RS422 level input
6. Support output TTL level to directly output SPDIF signal
Package Included:
- 1 x Clock Board
- 1 x SPDIF Output Board
