rb2013
Author of The 6922 Tube Review
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- Apr 12, 2013
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An update to my Gustard U12 thread - announcing the newest generation of DDC's based on the new XMOS 200 series chips:
The XU208 for example has twice the processing power of the U8 - 1000MIPS
http://www.xmos.com/products/silicon/xcore-200/xu-series
The xCORE-200 USB family of devices (XU and XUF) extends the popular xCORE architecture to provide increased performance, memory footprint and flexibility for the most demanding applications.
xCORE-200 XU/XUF integrates up to two USB 2.0 PHYs (host or device) and implements a dual-issue processor pipeline to boost peak compute performance to 4000MIPS and 2000MMACS. Up to 1024KB on-chip SRAM memory is available. Each member of the xCORE-200 family has an embedded flash option for applications where additional security is required.
I have two new DDC boards in the mail and should be here in the next week or so:
The Q1-S featuring the XU208 with the ultra low phase noise NDK SD clocks. I actually bought the X1 with the NDK clocks -the Q1-S is close but only a 2 layer board vs 4 layer for the X1.
Product Description:
X-1 digital interface of our team to develop a high-performance USB digital audio interface, using the XMOS latest xCORE-200 series chips. X-1 is the rare Japanese KDS low jitter TCXO clock digital system interface. X-1 digital interface using standard USB2.0 input interface, while X-1 has a wealth of output interfaces, including coaxial RCA and I2S interfaces.
Features:
1, X-1 is the first use of XMOS latest xCORE-200 series USB interface digital products. New generation XMOS chip, using more advanced process technology, performance than the older U8 chip doubled, reaching 1000MIPS processing capabilities.
2 , it is known, the core of the algorithm is heavy digital audio. Our team in the field of digital audio work for many years, at the same time get XMOS FAE support team, we conducted a number of technical improvements and optimization algorithms on the basis of the original firmware.
Specifications:
Each output interface supports sample rates:
PCM: 44.1KHz, 48KHz, 88.2KHz, 96KHz,
176.4KHz, 192KHz, 352.8KHz, 384KHz
[ Wherein I2S out support full sample rate , S / PDIF supports up to 192KHz]
DSD: 2.8 MHz (DSD64) - DoP, native
5.6 MHz (DSD128) - DoP, native
11.2 MHz (DSD256) - native
[ Wherein I2S out support all DSD format , S / PDIF and AES / EBU support DSD64 DOP mode ]
Bits wide: 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 female, USB power supply range 4.5V-5.1V ;
2 , RCA connector outputs standard S / PDIF signal level is 550mV ( standard connection load ), the output impedance of 75 ohms;
Design details:
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 a 2 -way independent of the LDO power supply, wherein the clock even partially adopted ADI 's ultra low noise LDO , in order to ensure the ultimate output performance laid a solid foundation.
2 , PCB motherboard with 4 -layer circuit board design, make sure you have a complete ground plane and power planes, high-speed digital design methods to ensure signal integrity and power integrity of the entire board. The clock signal special treatment, the use of package design and precise impedance control, thereby ensuring the signal quality and increase the clock anti-jamming capability. Input and output signals are to follow standard design, especially USB high speed signals using a 90 ohm differential impedance control.
There appears to be a i2s version available called the Q-1.
And the more sophisticated Singxer F-1 XU208 using the totl Crystek CCHD-575 ultra low phase noise clocks. But some other interesting features:
Specifications:
Each output interface supports sample rates:
PCM: 44.1KHz, 48KHz, 88.2KHz, 96KHz,
176.4KHz, 192KHz, 352.8KHz, 384KHz
[ Wherein I2S out support full sample rate , S / PDIF supports up to 192KHz]
DSD: 2.8 MHz (DSD64) - DoP, native
5.6 MHz (DSD128) - DoP, native
11.2 MHz (DSD256) - native
[ Wherein I2S out support all DSD format , S / PDIF and AES / EBU support DSD64 DOP mode ]
Bits wide: the highest 32 bit over I2S output
The highest 24 bit over S / PDIF
Product Description:
F-1 digital interface of our team to develop a high-performance USB digital audio interface, using the XMOS latest xCORE-200 series chips. F-1 is the use of ultra- low-jitter digital clock system interface. F-1 digital interface using standard USB2.0 input interface, while F-1 has a wealth of output interfaces, including coaxial RCA and I2S interfaces.
Features:
1, F-1 is the first using the XMOS latest xCORE-200 series of high-end USB digital interface products. New generation XMOS chip, using more advanced process technology, performance than the older U8 chip doubled, reaching 1000MIPS processing capabilities.
2 , it is known, the weight of the core is digital audio algorithms. Our team in the field of digital audio work for many years, at the same time get XMOS FAEsupport team, we conducted a number of technical improvements and optimization algorithms on the basis of the original firmware.
1. Full isolation technology, 150Mbps full-chip isolation, interference can be completely isolated from the PC;
2. Source synchronous shaping technology and CPLD technology, I2S signal isolation after the re-shaping; thus eliminating the isolation chip to bring added jitter.
3. The independent development of the system clock, usingCRYSTEK customized high-performance crystal, ultra-low phase noise, low jitter.
Our team in the field of digital audio work for many years, at the same time get XMOS FAEsupport team, we conducted a number of technical improvements and optimization algorithms on the basis of the original firmware.
Design details:
1 The entire board using 2 independent way of LDO power supply, wherein the clock even partially adopted ADI 's ultra low noise LDO , in order to ensure the ultimate output performance laid a solid foundation.
2 The PCB motherboard with 4 -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.
Here is my current ranking of the many USB Bridges I've had - Let's see if this new generation can beat the top ones:
Here would be my current ranking and ratings:
PUC2 Lite TeraDak DC30W/Cerious/Regen135
DXIO Silver/TeraDak DC-30W/Cerious 130
PUC2 Lite - USB power 110
Breeze/Cerious Graph/WBT RCA Nexgen 109
Breeze with Cerious Graphene 108
Breeze DU-U8 (Talema version) 98
Breeze DU-U8 (BingZi version) 95
Hydra Z with LPS 92
Melodious MX-U8 (upgraded caps) 85
Melodious MX-U8 (stock) 81
Gustard U12 (upgraded caps) 76
Gustard U12 stock 72
iDAC DAC2 (used as a DDC) 65
Musiland USB3.0 US Dragon 65
M2Tech EVO with LPS 60
Audiophileo 2 50
M2Tech Hiface 40
The XU208 for example has twice the processing power of the U8 - 1000MIPS
http://www.xmos.com/products/silicon/xcore-200/xu-series
The xCORE-200 USB family of devices (XU and XUF) extends the popular xCORE architecture to provide increased performance, memory footprint and flexibility for the most demanding applications.
xCORE-200 XU/XUF integrates up to two USB 2.0 PHYs (host or device) and implements a dual-issue processor pipeline to boost peak compute performance to 4000MIPS and 2000MMACS. Up to 1024KB on-chip SRAM memory is available. Each member of the xCORE-200 family has an embedded flash option for applications where additional security is required.
Features
- Devices ranging from 8 to 32 cores
- Multicore compute between 1000MIPS (8 core) and 4000MIPS (32 cores)
- Flexible, high performance configurable I/O capability
- Integrated USB 2.0 PHY for high/full-speed host and device operation
- Up to 2048KB on-board memory for demanding applications
- Embedded QuadSPI flash options - up to 2048KB on-board
- DSP integration using our native 32b/64b instructions
- Free software library support to implement your exact mix of peripherals
- Easy to use with our free xSOFTip Explorer and xTIMEcomposer Studio tools
I have two new DDC boards in the mail and should be here in the next week or so:
The
Product Description:
X-1 digital interface of our team to develop a high-performance USB digital audio interface, using the XMOS latest xCORE-200 series chips. X-1 is the rare Japanese KDS low jitter TCXO clock digital system interface. X-1 digital interface using standard USB2.0 input interface, while X-1 has a wealth of output interfaces, including coaxial RCA and I2S interfaces.
Features:
1, X-1 is the first use of XMOS latest xCORE-200 series USB interface digital products. New generation XMOS chip, using more advanced process technology, performance than the older U8 chip doubled, reaching 1000MIPS processing capabilities.
2 , it is known, the core of the algorithm is heavy digital audio. Our team in the field of digital audio work for many years, at the same time get XMOS FAE support team, we conducted a number of technical improvements and optimization algorithms on the basis of the original firmware.
Specifications:
Each output interface supports sample rates:
PCM: 44.1KHz, 48KHz, 88.2KHz, 96KHz,
176.4KHz, 192KHz, 352.8KHz, 384KHz
[ Wherein I2S out support full sample rate , S / PDIF supports up to 192KHz]
DSD: 2.8 MHz (DSD64) - DoP, native
5.6 MHz (DSD128) - DoP, native
11.2 MHz (DSD256) - native
[ Wherein I2S out support all DSD format , S / PDIF and AES / EBU support DSD64 DOP mode ]
Bits wide: 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 female, USB power supply range 4.5V-5.1V ;
2 , RCA connector outputs standard S / PDIF signal level is 550mV ( standard connection load ), the output impedance of 75 ohms;
Design details:
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 a 2 -way independent of the LDO power supply, wherein the clock even partially adopted ADI 's ultra low noise LDO , in order to ensure the ultimate output performance laid a solid foundation.
2 , PCB motherboard with 4 -layer circuit board design, make sure you have a complete ground plane and power planes, high-speed digital design methods to ensure signal integrity and power integrity of the entire board. The clock signal special treatment, the use of package design and precise impedance control, thereby ensuring the signal quality and increase the clock anti-jamming capability. Input and output signals are to follow standard design, especially USB high speed signals using a 90 ohm differential impedance control.
There appears to be a i2s version available called the Q-1.
Code:
[color=rgb(33, 33, 33)][left] Each output interface supports sample rates : PCM: 44.1KHz, 48KHz, 88.2KHz, 96KHz, 176.4KHz, 192KHz, 352.8KHz, 384KHz [ Wherein I2S out support full sample rate , S / PDIF supports up to 192KHz] DSD: 2.8 MHz (DSD64) - DoP, native 5.6 MHz (DSD128) - DoP, native 11.2 MHz (DSD256) - native [ Wherein all DSD format support I2S out , S / PDIF support DSD64 DOP mode ] Bits wide : the highest 32 bit over I2S output The highest 24 bit over S / PDIF System Compatibility :[/left][/color]And the more sophisticated Singxer F-1 XU208 using the totl Crystek CCHD-575 ultra low phase noise clocks. But some other interesting features:
Specifications:
Each output interface supports sample rates:
PCM: 44.1KHz, 48KHz, 88.2KHz, 96KHz,
176.4KHz, 192KHz, 352.8KHz, 384KHz
[ Wherein I2S out support full sample rate , S / PDIF supports up to 192KHz]
DSD: 2.8 MHz (DSD64) - DoP, native
5.6 MHz (DSD128) - DoP, native
11.2 MHz (DSD256) - native
[ Wherein I2S out support all DSD format , S / PDIF and AES / EBU support DSD64 DOP mode ]
Bits wide: the highest 32 bit over I2S output
The highest 24 bit over S / PDIF
Product Description:
F-1 digital interface of our team to develop a high-performance USB digital audio interface, using the XMOS latest xCORE-200 series chips. F-1 is the use of ultra- low-jitter digital clock system interface. F-1 digital interface using standard USB2.0 input interface, while F-1 has a wealth of output interfaces, including coaxial RCA and I2S interfaces.
Features:
1, F-1 is the first using the XMOS latest xCORE-200 series of high-end USB digital interface products. New generation XMOS chip, using more advanced process technology, performance than the older U8 chip doubled, reaching 1000MIPS processing capabilities.
2 , it is known, the weight of the core is digital audio algorithms. Our team in the field of digital audio work for many years, at the same time get XMOS FAEsupport team, we conducted a number of technical improvements and optimization algorithms on the basis of the original firmware.
1. Full isolation technology, 150Mbps full-chip isolation, interference can be completely isolated from the PC;
2. Source synchronous shaping technology and CPLD technology, I2S signal isolation after the re-shaping; thus eliminating the isolation chip to bring added jitter.
3. The independent development of the system clock, usingCRYSTEK customized high-performance crystal, ultra-low phase noise, low jitter.
Our team in the field of digital audio work for many years, at the same time get XMOS FAEsupport team, we conducted a number of technical improvements and optimization algorithms on the basis of the original firmware.
Design details:
1 The entire board using 2 independent way of LDO power supply, wherein the clock even partially adopted ADI 's ultra low noise LDO , in order to ensure the ultimate output performance laid a solid foundation.
2 The PCB motherboard with 4 -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.
Here is my current ranking of the many USB Bridges I've had - Let's see if this new generation can beat the top ones:
Here would be my current ranking and ratings:
PUC2 Lite TeraDak DC30W/Cerious/Regen135
DXIO Silver/TeraDak DC-30W/Cerious 130
PUC2 Lite - USB power 110
Breeze/Cerious Graph/WBT RCA Nexgen 109
Breeze with Cerious Graphene 108
Breeze DU-U8 (Talema version) 98
Breeze DU-U8 (BingZi version) 95
Hydra Z with LPS 92
Melodious MX-U8 (upgraded caps) 85
Melodious MX-U8 (stock) 81
Gustard U12 (upgraded caps) 76
Gustard U12 stock 72
iDAC DAC2 (used as a DDC) 65
Musiland USB3.0 US Dragon 65
M2Tech EVO with LPS 60
Audiophileo 2 50
M2Tech Hiface 40
