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IQaudIO IQA003, User Manual

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IQaudIO IQA003 User Manual Download Page 11

6)  Pi-Digi+ 

The Pi-Digi+ is a fully HAT compliant add-on accessory for the Raspberry Pi.  

The Pi-Digi+ takes the digital audio signals (I2S) from the Raspberry Pi and through the onboard 
Wolfson / Cirus Logic WM8804 delivers Optical TOSLINK and isolated electrical SPDIF connection to 
an external DAC. 

The Pi-Digi+ can be connected to the Raspberry Pi A+/B+/RPi2 or RPi3’s 40way pin header without 
any additional soldering. The Pi-Digi+ is powered from the Raspberry Pi. 

 

 

 

 

 

 

 

 

 

 

 

Electrical (S/PDIF) 

 

40way header

 

 

 

 

Power  LED   

 

 

Optical (TOSLINK)

 

v27 

 

     

10-Sept–2017 

10

Summary of Contents for IQA003

Page 1: ...ss mainly focus on the distribution of electronic components Line cards we deal with include Microchip ALPS ROHM Xilinx Pulse ON Everlight and Freescale Main products comprise IC Modules Potentiometer...

Page 2: ...n and usage of IQaudIO audio cards for the Raspberry Pi If you would like to see additional information within this document please email us at info iqaudio com v27 IQaudIO Limited Company No 09461908...

Page 3: ...o include sound card support 13 Checking audio is working through the IQaudIO sound card 14 Advanced troubleshooting 15 Controlling the Pi AMP or Pi DigiAMP s Mute Un mute 16 Common Linux audio distri...

Page 4: ...Raspberry Pi On Board Audio You may want to disable the Raspberry Pi s on board low quality audio card This is done simply by commenting out the dtparam audio on device tree parameter in your boot co...

Page 5: ...he RoonLabs PC Mac application which connects to and plays music through the IQaudIO sound card This is again similar with the Shairport sync utility it turns the Pi into a Apple Airport compatible sp...

Page 6: ...file over to the Pi Err no Doing this will just store the img file on the SD card The Pi needs the SD card to be formatted in a particular way to allow it to boot start up and run Don t worry there a...

Page 7: ...via the Texas Instruments TPA6133A headphone amp supports the direct use of headphones via the Pi DAC s 3 5mm audio jack The Pi DAC can be connected to the Raspberry Pi s 40way pin header without any...

Page 8: ...y additional soldering The Pi DigiAMP requires a 12 19volt power source to operate Power should be applied via the Pi DigiAMP s standard barrel connector or the two pin JST socket provided The Pi Digi...

Page 9: ...hen powered has been designed to provide power to the Raspberry Pi Pi DAC and Pi AMP combination safely You can continue to use your Pi devices without risk of damage As with the Pi DAC we ve focused...

Page 10: ...ntial out in parallel to Phono RCA line level output It also includes the IQaudIO Headphone amp The Pi DAC PRO can be connected to the Raspberry Pi A B RPi2 or RPi3 s 40way pin header without any addi...

Page 11: ...h the onboard Wolfson Cirus Logic WM8804 delivers Optical TOSLINK and isolated electrical SPDIF connection to an external DAC The Pi Digi can be connected to the Raspberry Pi A B RPi2 or RPi3 s 40way...

Page 12: ...Headphone daughter card for the Pi DACZero which can be mounted above the DACZero to give an amplified headphone output in parallel The Pi DACZero and Pi DACZeroHeadphone boards are powered from the R...

Page 13: ...cted to the Raspberry Pi s 40way pin header without any additional soldering The Pi DAC is normally supplied along with 4x 12mm PCB spacers and 8x M2 5 screws You may want to use a 30way right angled...

Page 14: ...fitted the remaining screws can be tightened finger tight please as required If you are using the Pi CASE then replace the 4x screws beneath the Pi with the 4x 5mm PCB standoffs provided with the Pi...

Page 15: ...ormal way You should see that the Raspberry Pi and the Pi DAC both have power LEDs this indicates that the power is successfully being applied to the Pi DAC You can now remove power and reconnect any...

Page 16: ...Y PI BEFORE ATTEMPTING THIS PROCEDURE The Pi DigiAMP can be connected to the Raspberry Pi s 40way pin header without any additional soldering The Pi DigiAMP is supplied along with 4x 12mm PCB spacers...

Page 17: ...en fitted the remaining screws can be tightened finger tight please as require If you are using the Pi CASE then replace the 4x screws beneath the Pi with the 4x 5mm PCB standoffs provided with the Pi...

Page 18: ...supply The Power supply s output connector should be inserted into the Pi AMP s DC input terminal marked P4 Only then should the Power supply s AC input be plugged into the mains When power has been...

Page 19: ...aker ve terminal often red to on the amplifier output Now select the output gain 20db or 26db by selecting the appropriate pin header position on P7 Selecting 26db will result in louder volume overall...

Page 20: ...Pi DAC s two pin headers the 2x4 audio pin header and the 2x5 power header NOTE Older Pi DAC may not have the 2x5 power header fitted Please see Section 10 for details on how to solder this to the Pi...

Page 21: ...these should be retained previously used to secure the Pi DAC to the Raspberry Pi Once the Pi AMP has been fitted the remaining screws from the Pi DAC can be tightened finger tight is fine as require...

Page 22: ...uld be inserted into the Pi AMP s DC input terminal marked 15V power Only then should the Power supply s AC input be plugged into the mains Once power is applied via the Pi AMP you should see that the...

Page 23: ...both left and right loudspeakers P3 is for connecting the RIGHT speaker P2 is for connecting the LEFT speaker Attach the speaker ve terminal often black to the on the amplifier output Attach the spea...

Page 24: ...ove it now If you build the CASE whilst retaining the protective film you may find that the finished look is spoilt or for transparent cases the result may be opaque Bolt the PCBs together before atte...

Page 25: ...a Lay out the CASE sides corresponding to the Raspberry Pi Pi DAC Pi DigiAMP Pi AMP v27 10 Sept 2017 24...

Page 26: ...en build the sides up around the Raspberry Pi Use sticky tape at each corner to make things simpler to assemble c Add the base with text outwards and screw the case to the Raspberry Pi v27 10 Sept 201...

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