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IAN CANADA HDMIpi Transmitter I2S / DSD / DoP to HDMI

IAN CANADA HDMIpi transmitter I2S/DSD/DoP to HDMI

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Reference : 13982
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IAN CANADA HDMIPI Transmitter

Transmitter I2S / DSD / PCM / DOP to HDMI



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This module allows you to recover the outgoing digital audio stream of the GPIO port of a Raspberry Pi (or one of its HATs) and send it to the balanced LVDS format on an HDMI port.

This allows using a combo Raspberry Pi + reclocker as high-fidelity digital audio player connected to a remote DAC. In that, it differs from the usual strategy of mounting the DAC directly on the RPI or to establish a connection by converting the digital stream to S / PDIF.

The HDMIPi transmitter allows installations where the DAC is separated from Pi (not on top), while maintaining an I2S encoded digital stream with the LVDS standard (without conversion that may alter the signal).

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High fidelity transmitter


The HDMIPi Transmitter module by Ian Canada supports any input stream up to 768kHz and DSD signals up to DSD1024 (native). It can also handle signals up to DSD256 DoP.

Its 4 inputs Data / SCK / LRCK / MCKL are easily identifiable and can connect with ease through U.FL connectors which are already mounted on the surface.

It has a GPIO connector through which it can be mounted on a FIFOPI reclocker unit by Ian Canada (or a Kali from Allo provided you have a cable U.FL to bare wire available).

Note that a direct installation on Rapsberry Pi with DAC able to run without MCLK is possible. However it may be completely out of place in most high-fidelity contexts.

Multiple power options


By default, the HDMIPi will try to power itself via the GPIO port.

It is possible to override the GPIO power and use the phoenix connector (provided) after welding it on the PCB. The user can then connect a 5VDC / 100mA supply (mini). The use of a regulated linear power supply allows a clean signal with very low audio parasite.

For the most demanding projects, it is possible to remove the integrated power unit in order to connect a super capacitor or LiFePO4 battery. The circuit is thus completely independent of the main domestic circuit.

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Photo of the set when mounted

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This figure illustrates the whole set I2S / HDMI mounted on a FIFOPI. The latter is itself mounted on a Raspberri Pi3B+.

When mounted this way, the whole can communicate via HDMI with any DAC equipped with an I2S LVDS input to HDMI.

For convenience, Ian Canada also offers the dedicated receiver which mainly offers the advantage of being powered directly via the HDMI cord used for interconnection.

Caution FifoPi and the Raspberry Pi are not supplied and must be purchased separately.

HDMI pinout (Format PS Audio / Audio-GD)

pinout.jpg

Dimensions & Spacings

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Specifications
TypeI2S transmitter to HDMI LVDS
Needs clock

Yes *

Except with DAC that can run without MCLK

Type of input signalI2S
DSD
PCM
DOP
Output signalLVDS HDMI
InputsGPIO x1
U.FL x 4 (DATA, SCK, LRCK MCK)
OutputsHDMI Female x1 (Defaut protocol is LVDS PSAUDIO / AUDIO-GD)
Power supply5V
3.3V (super capacitor or LiFePO4)
Sampling supportedup to 768kHz
DSD1024
DOP256
Dimensions56.5 x 65 mm
Distances49 x 60 mm
M2.5
Weight23g
 
Data sheet
InputSPDIF
InputI2S
OutputI2S LVDS via HDMI
 
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