Send a large amount of lossless resources, Bao SF Express. Singxer SU-6 XMOS big ship digital interface, using the latest XU208 chip, Crystek CCHD-957 femtosecond crystal oscillator, using full isolation（Ground isolation）Technology, CPLD shaping technology, source synchronization technology, support 32/384, DSD512 Native mode. There are 3 sets of I2S output, supporting MCLK main clock and WCLK word clock output.

Please download the manual and driver from the following network disk, and extract the code ih2k
\ https://pan.baidu.com/s/1pK7uaW7 (copy to the browser address bar to open)

Some user commentsEstablished physical store, credit guarantee
\ This shop is the general agent of Singxer Beijing
\ This shop is for everyone in headphones: certified merchants, industry members
\ Singxer Electronic Authorization Letter
\panel
\Backplane
\Internal structure

Product introduction:
\     The SU-6 digital interface is a new generation of high-performance USB digital audio interface newly developed by the Singxer team. It uses XMOS’s latest xCORE-200 series and Xilinx’s high-performance large-scale PGA chip. SU-6 is a digital interface that uses a constant temperature clock system. Crystek''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s two CCHD-957 femtosecond crystal oscillators have laid a solid foundation for the quality of the output audio signal of SU-6. The digital interface of SU-6 uses a standard USB2.0 input interface, while SU-6 has a wealth of output interfaces, including optical, coaxial RCA and BNC output S/PDI, XLR balanced output AES/EBU, RJ45 and HDMI interface The output I2S (including DSD ON signal) supports MCLK main clock and WCLK word clock output. The design of the power supply system is optimized, and the audio part is powered by a 7.5F (7.5 million uf) super capacitor.

Technical features:
\     SU-6 is a new generation of USB interface that we have newly developed. It is positioned as a high-end interface. Compared with our previous products, it mainly adopts the following four new and self-developed technologies:
\ 1 Built-in CPLD pre-shaping technology: FPGA-based source synchronization technology reshapes the isolated I2S signal, thereby eliminating the additive jitter caused by the isolation chip.
\ 2 Newly designed FPGA algorithm: The built-in FIFO buffers the data before outputting, and the SPDIF output is re-encoded by FPGA, so that the coaxial output can support up to PCM 384K and DSD DOP128.
\ 3 Using CRYSTEK''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s CCHD-957 high-performance femtosecond crystal oscillator: With the self-developed constant temperature system and ultra-low noise super capacitor power supply system, the short-term stability of the clock is further improved.
\ 4 Original single clock system: All circuits of the whole machine adopt a synchronous clock design, and the USB clock is synthesized by a PLL derived from a femtosecond clock.

plan the details:
\1: Carry out the design concept of electricity as the mother of sound, attach importance to the design of power circuit, adopt external DC input, built-in super capacitor for power supply, and provide high performance, low noise and fast response LDO. The whole board uses up to 6 independent LDOs for power supply. The digital audio motherboard part is powered by secondary LDOs, and the clock part even uses LT ultra-low noise LDOs, which lays a solid foundation for ensuring the output performance.
\ 2: In order to ensure excellent electrical transmission performance, the XLR sockets are made of Neutrik, and the USB-B sockets are made of TE. The audiophile BNC and RCA coaxial sockets are customized products of major Taiwanese manufacturers. Even the fuses are made from the United States. Litteluse model.
\ 3: The audio motherboard uses a 4-layer circuit board design to ensure a complete ground plane and power layer, and a high-speed digital design method to ensure the signal integrity and power integrity of the entire board. The clock signal is specially processed, and the package design and precise impedance control are adopted to ensure the signal quality of the clock and improve its anti-interference ability.
\ 4: The input and output signals follow the standard design, especially the USB high-speed signal adopts 90 ohm impedance control, and an anti-static TVS protection circuit is also built-in; the I2S signal adopts the LVDS differential level standard, the impedance is controlled at 100 ohms, and the 4 outputs are adopted. An independent LVDS driver is provided.   

Technical Parameters:
\Each output interface supports sampling rate:
\PCM: 44.1, 48, 88.2, 96, 176.4, 192, 352.8, 384KHz (I2S out and WCLK out support all sampling rates, S/PDIF and AES/EBU support up to 384KHz, and optical fiber supports up to 192KHz)
\ DSD: 2.8 MHz (DSD64) - DoP, Native
\     5.6 MHz (DSD128) - DoP, Native
\     11.2 MHz (DSD256) - DoP, Native
\     22.5 MHz (DSD512) - Native
\ (I2S out supports all DSD formats, S/PDIF and AES/EBU support DSD128 DOP mode, among which optical fiber supports up to DOP64)
\ Bit width: I2S   Up to 32 bit
\         S/PDIF, AES/EBU, up to 24 bit

System compatibility:
\1: Windows 7, Windows 8, Windows 10, 32/64 bit, need to install a special driver
\ 2: Native MacOS 10.6 and later, the system comes with a driver
\ 3: Native Linux with UAC2 compliant kernel, the system comes with a driver,（Tested on Ubuntu and Daphile systems, based on INTEL X86 platform）
\ 4: Android OS 4.2 and above, the device needs to support the OTG function. Generally speaking, the Android 5.0 system is supported by default. The version below 5.0 is recommended to be used with a special player

Electrical standards for each interface:
\1 USB input socket: standard USB-B type female socket, USB power supply range 4.5V-5.1V.
\ 2 DC POWER input socket: use DC2.1 socket, support 7.5V-9V DC input（In order to realize the fast charging of the super capacitor, the power supply requirement is 3A）.
\ 3 BNC interface and RCA interface: output standard S/PDI signal, the level is 550mV (connected to the standard load), the output impedance is 75 ohms.
\ 4 XLR interface: output standard AES/EBU signal, level is 3.3V (connected to standard load), output impedance is 110 ohms.
\ 5 Word clock (WCLK) output: BNC interface is adopted, the level is TTL (without load), and the output impedance is 75 ohms.
\ 6 2 HDMI-I2S signals: output through the HDMI socket, the output four signals include MCLK, BCLK, LRCLK, SDATA signals, using standard LVDS differential levels, and impedance control at 100 ohms. Among them, the PIN13-15 of the HDMI socket is the DSD_ON signal, when the high level is the I2S working in the DSD mode, the level is LVTTL; PIN18 is the 5V weak power output（Output current is less than 20ma）, Can be used as an interface plug-in instruction; the I2S line sequence of the 2 outputs is the same.
\ 7 RJ45-I2S output: I2S signal is CMOS（5V）The single-ended signal, low-impedance output, output four signals including MCLK, BCLK, LRCLK, SDATA signals.
\ 8 Optical fiber port: output standard optical signal.

HDMI-I2S interface output:
\1: LVDS differential signal with a level of 3.3V
\ 2: DSD ON signal, 5V power supply（Small current）, The MUTE signal has been processed by the CPLD inside, and there is no need to output the MUTE signal
\ 3: The DSD ON signal can be defined by itself, and the DSD ON signal can be output to the PIN13, 14, 15, 16 pins of the socket at will
\ 4: The phases of PIN1-3 and PIN7-9 are adjustable, and the user can configure the phases of these two pairs of outputs through a switch

Flexible HDMI-I2S output configuration:
\ The HDMI-I2S can be configured through the dial switch
\ 1 Switch 1-4: Corresponding to the PIN13-16 pin of the HDMI socket. Pull to the ON position, it means that the PIN pin has the output function of DSD_ON signal.
\ 2 Switches 5 and 6: Configure the mode of clock output:
\ When switch 5 is O, the clock outputs MCLK, and when it is ON, the clock outputs WCK.
\ Switch 6 configures the frequency of MCLK, when it is O it is 22.5792M/24.576M, when it is ON it is 45.1584M/49.152M
\ The configuration of switch 6 is valid for CLK OUT, RJ45-I2S, HDMI-I2S
\ 3 Switch 7: You can set the left and right channels in DSD mode in the I2S signal separately
\ 4 Switch 8: You can set the line sequence of BCLK in the I2S signal; when O, PIN4 is BCLK+, PIN6 is BCLK-
\ 5 Switch 9: You can set the line sequence of LRCLK in the I2S signal; when O, PIN7 is LRCLK+, PIN9 is LRCLK-
\ 6 Switch 10: You can set the line sequence of DATA in the I2S signal; when O, PIN1 is DATA+, PIN3 is DATA-

Note: The output of coaxial, optical fiber, AES/EBU is not affected by the above pull switch; the fixed line sequence of RJ45-I2S needs to adapt to different interfaces, and the user needs to customize the network cable.

Chassis size and packaging:
\Chassis: length*width*height=238*170*46mm, excluding the height of the machine feet and the protruding part of the connector behind the chassis
\ Packing: length*width*height=350*230*110mm
\ Approximate weight of a single machine: 1.8KG
\ Packing weight: 2KG