Singxer SU-1 USB digital interface with XMOS XU208 CPLD DSD256 DOP Review

Singxer SU-1 USB digital interface with XMOS XU208 CPLD DSD256 DOP

  • using the XMOS latest xCORE-200 series chip
  • SU-1 is the independent development low jitter clock digital system interface(CRYSTEK CCHD-575/957 SERIES).
  • High-performance,low noise.
  • fast response of the LDO as the main power source.
  • Outputs: XLR Balanced Output AES,coaxial RCA and BNC,using HDMI socket output I2S port,WCLK clock output.

Specifications:
Each output interface supports sampling rates:
PCM: 44.1KHz, 48KHz, 88.2KHz, 96KHz, 176.4KHz, 192KHz, 352.8KHz, 384KHz
(I2S support all sampling rate,S/PDIF support upper to 192KHz
DSD: 2.8 MHz (DSD64)-DoP, native; 5.6 MHz (DSD128)-DoP, native; 11.2 MHz (DSD256)-native
(I2S output support all DSD,S/PDIF,AES/EBU support DSD64 DOP mode)
Bits width:
the highest 32 bit over I2S output; The highest 24 bit over S/PDIF
Each interface electrical standards:
1.USB input socket is a standard USB-B type socket, USB power supply range 4.5V-5.1V;
2.RCA connector outputs standard S/PDIF signal,electrical level is 550mV (standard connection load),the output impedance of 75 ohms.
3.Power suppply input is AC 115V/230V,using TALEMA transformer.

System compatibility:
1:Windows XP,Windows 7,Windows 8;32/64 bit,need install driver
2:Native MacOS 10.6 and later,use own driver
3:Native Linux with UAC2 compliant kernel,use own driver
4:Android OS 4.2 and above,need support OTG function

I2S port use HDMI socket output:
1.Electrical level is 3.3V LVDS differential signa.
2.DSD ON singnal,5Vpower supply,CPLD has processed the MUTE signal,so do not need to process it again.
3.DSD ON signal can be user-defined,DSD ON signal can be connected to PIN 13,14,15,16 on the socket.
4.You can adjust the phase of PIN 1-3 and PIN 7-9 with a switch.

Flexible HDMI-I2S output configuration:
Switch 1-4 is for PIN13-16 on the HDMI socket.
When you turn it into “ON”,it means HDMI PIN has DSD_ON function.
Switch 5 is clock output mode,”OFF” is MCLK,”ON” is WCK.
Switch 6 is for HDMI PIN1-3 and PIN 7-9 phase,ON is positive phase,OFF is negative phase.(ON is for Gustard DAC,OFF is for PS audio)
If it is Gustard DAC,please turn Switch 3 and 6 into “ON”,others are “OFF.
Switch 7 and 8 are standby.

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