Digital Upsampling Interface SRC AK4137 I2S 32Bit / 384kHz DSD256 HAT for Rapberry Pi

Digital Interface SRC AK4137 I2S 32Bit / 384kHz DSD256 HAT for Rapberry Pi
This HAT format digital interface module for Raspberry Pi integrates a DAC AKM AK4137EQ chip supporting high sampling rates: PCM up to 32bit 384kHz and DSD up to DSD256. The audio signal is recovered in I2S from your Raspberry Pi.

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24,92 €tax excl.

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Shipping date: 26-10-2020.

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Digital Interface

Digital Interface SRC AK4137 I2S 32Bit / 384kHz DSD256 HAT for Rapberry Pi

Interface Digitale SRC AK4137 I2S 32Bit / 384kHz DSD256 HAT pour Rapberry Pi

The interface is delivered with its screws only. Raspberry Pi is sold separately.


This HAT format digital interface module for Raspberry Pi integrates an AKM AK4137EQ chip supporting high sampling rates: PCM up to 32bit 384kHz and DSD up to DSD256. The audio signal is recovered in I2S from your Raspberry Pi. The AK4137EQ chip integrates a clock coupled to two other TXC clocks on the module, in order to considerably reduce jitter by allowing signal synchronization. This interface allows you to enjoy a high quality audio signal for rich and accurate sound reproduction.

The output is made on a 10 pins connector (DOUT) whose pinout is as follows:

  • 1 : DSDON / DSDOE
  • 2 : GND
  • 3 : DATA / DSDL
  • 4 : BCK / DCLK
  • 5 : MCLK
  • 6 : LRCK / DSDR
  • 7 : OD1
  • 8 : OD2
  • 9 : GND
  • 10 : MUTE

Another 20-pin connector (K) allows different settings to be made depending on the position of the jumper.

Select output mode
Output modeK1K2
DSD64Short circuitShort circuit
DSD128Not connectedShort circuit
DSD256Short circuitNot connected
PCMNot connectedNot connected
Bit depth selection
PCM Bit depthK3K4
16bitShort circuitShort circuit
20bitNot connectedShort circuit
24bitShort circuitNot connected
32bitNot connectedNot connected
Sampling rate selection
PCM Sampling rateK5K6K7
44.1kHzShort circuitShort circuitShort circuit
48kHzNot connectedShort circuitShort circuit
88.2kHzShort circuitNot connectedShort circuit
96kHzNot connectedNot connectedShort circuit
176.4kHzShort circuitShort circuitNot connected
192kHzNot connectedShort circuitNot connected
352.8kHzShort circuitNot connectedNot connected
384kHzNot connectedNot connectedNot connected
Filter selection
FilterK8K9
Short delay slow roll-offShort circuitShort circuit
Slow roll-offNot connectedShort circuit
Short delay sharp roll-offShort circuitNot connected
Sharp roll-offNot connectedNot connected
Activate DoP Mode
ModeK10
Active DoPShort circuit
Disabled DoPNot connected

To power the module, two possible methods are available: supply your Raspberry Pi with 5V via its Micro USB connector will also supply the interface, or directly supply the interface with 5V by soldering the GND and +5V points. DO NOT POWER THE INTERFACE AND RASPBERRY PI AT THE SAME TIME.

Technical characteristics

Specifications
Product typeDigital interface
ChipAKM AK4137EQ
InputGPIO 40 pins
OutputI2S 10 pins
ClocksTCX 24.576 + TCX 22.5792
Supported sampling ratePCM up to 32bit 384kHz
DSD up to DSD256
General
Power supply5VDC via Micro USB Raspberry Pi OR soldering points on the interface board (power supply sold separately)
Dimensions65 x 56mm
Space between fixation holes58 x 49mm
Package1x Digital Interface
Screws
 
Data sheet
InputI2S
OutputI2S
DAC ChipAK4137EQ
Max sampling rateDSD256
Max sampling rate384kHz
 
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Digital Upsampling Interface SRC AK4137 I2S 32Bit / 384kHz DSD256 HAT for Rapberry Pi
This HAT format digital interface module for Raspberry Pi integrates a DAC AKM AK4137EQ chip supporting high sampling rates: PCM up to 32bit 384kHz...

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