MicroSD Memory Card Transport Project

[Bunpei]

Chiaki made an enhancement on DSD play.
Now you can play DSD DFF files of 48 kHz series by updating firmware.
Namely, play of DSD64(3.1MHz), DSD128(6.2MHz), DSD256(12.4MHz).

No FPGA configuration EEPROM update is required.
If you need the firmware update, please contact to Bunpei.

[teflonmats]

Originally Posted by staccatiss

I have about 20 pcs of SDCARDs and with these
* SanDisk SDHC 2, 4, 8, 16GB class 2,4, and 6
* SanDisk Ultra 16GB class4
* SanDisk Extreme III class 62GB
* Kingston SDHC 32GB class 4

I have no problems using SDTrans384 with the 3.1 software (not DSD FPGA yet).


/S

Hello staccatiss.

You have Pm.

Mats

[Bunpei]

We recommend the use of SDTrans384 I2S/DSD output with ES9018 DAC in a "synchronous master clock configuration".
In order to implement this on TPA Buffalo III board, an original Crystek crystal oscillator device must be detached from Buffalo III main board. Here I explain the easiest and the most secure way based on my experiences of processing more than 10 cases.
Plan A. Applying four well-heated soldering irons at the same time to the four soldered points of the Crystek SMD oscillator device on board
It's the most simple and secure way. However, you need both four irons and four hands. A veteran DIY audiophile may have four irons. He may need a help of one of his family members as well.

Plan B. Applying low melting point temperature solder material to the four spots
Actually, this method does not go so well as imagined.

Plan C. Inserting thin knife edge between the base board of the oscillator and main board of Buffalo III to prize out, applying a soldering iron to the nearest soldering spot one by one
This method probably may damage tiny land patterns printed on bottom side of oscillator base board.

[Bunpei]

After you remove the Crystek Crystal Oscillator unit on your Buffalo III main board, you will find the following printed patterns on the board.

You can connect MCLK pin output of CN8 on SDTrans384 to the "Clock" through hole. You can select one of two MCLK output frequency classes, 22.5792/24.576MHz or by 90.3168/98.304MHz by setting SMD jumpers. When JP1 and JP5 are shunted, 90.3168/98.304MHz MCLK multiplied in FPGA appears on HDMI connector and I2S CN8 pin header respectively. JP2 and JP6 for 22.5792/24.576MHz MCLK tapped from raw output lines of NDK oscillators.
When you favor OSF OFF setting of ES9018, 22.5792/24.576MHz MCLK is enough. When you play DSD sources or DXD sources in OSF ON setting, you must select 90.3168/98.304MHz MCLK configuration.

In the case of using Sync-option, you must connect MCLK output pin at CN6 on DAC-side sub board to the "Clock" through hole on Buffalo III main board and GND pin at CN6 to "GND" through hole.

An adequate MCLK frequency is automatically selected by SDTrans firmware based on detected fs, 44.1kHz series or 48kHz series, of the currently selected source file.

[elecon]

Hello

For the first time SDTrans has been featured by a general on-line High End Audio publication: HiFi Statement in Germany run by Dirk Sommer who is also engaged in recording of music:

DSD, ein Format mit Zukunft? ? Zweiter Teil inklusive DSD-Download

[emuman100]

After reading this whole thread, This design initially caught my eye. Bunpei, are there any of your latest revision boards for sale? I was looking for a sd card player with SPDIF output. I'm just interested in playing CD rips.

[Bunpei]

Hi, emuman100,

I appreciate your interest on Chiaki's SD memory card player.
To our regret, we have no stock so far and no definite plan for the next release.

If you just need an SPDIF output and don't need hi-res I2S nor DSD output, an alternative low cost Chinese product might meet your requirements.

Bunpei

[emuman100]

Thank you for responding Bunpei. Is this alternative of decent quality, and very minimalistic and simple in design? If the cost is much less, I'd be interested. I can store all my CDs on one SD card.

[qusp]

wow, yeah this product was not for you anyway, either you have a VERY small amount of music, or you find low bitrate mp3 acceptable. actually both would seem to be the case...?

[jgwtriode]

Check out qls qa 350 and aims...both are quite a bit less and may do exactly what you want.