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Q-1 digital interface specification
Q-1 digital interface is Singxer developed a low-cost high-performance USB digital interface, the use of second-generation core XMOS latest USB interface xCORE-200’s, XU208 is U8 upgrade.Q-1 is also a support firmware upgrade interface. Dimensions, screw position, I2S pin position is fully compatible with Italy Amanero module . Please note, schematics and firmware (XMOS) are our own development, not the public version.
We are the world’s first manufacturer to successfully develop with XMOSXU208 chips.
The entire board with three crystal design, all imported SMD active crystal oscillator.
XU208 is a second-generation XMOS chip memory than U8 double computing speed of terror 1000MIPS , higher than the U8 of 500MIPS doubled.
Each interface electrical standards:
1 , USB input socket is a standard USB-B type female, the USB power supply range 4.5V-5.1V , current probably 110ma.
2 , the I2S pin output level is 3.3V.
1 , carry out electricity as the mother of the acoustic design concept, pay attention to the power supply circuit design, high-performance, low noise and fast response of the LDO as the main power source. The entire board using 1 independent way of LDO power supply.
2 , the PCB motherboard with 2 -layer circuit board design, ensure that you have full power and ground plane layer, using the method of high-speed digital design, signal integrity and power integrity of the entire board. The clock signal for special treatment, using package design and precise impedance control, thereby ensuring the signal quality and increase the clock anti-jamming capability. Input and output signals follow a standard design, especially USB high speed signals using a 90 ohm differential impedance control.
I2S socket Output Signal Description:
1 , the MUTE is high mute; DSD_ON is high DSD data stream;
2 , all the electricity an average of LVCMOS, voltage of 3.3V ;
3 , 3.3+ output power, low output current 50mA;
4 , the MCLK output 22.5792Mhz or 24.576Mhz clock;
5 , FS0, FS1, FS2 sampling rate indicator level, FS3 not;
I2S pin signals:
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