Wow! You are a genius! Thank you so much! I didn't get as far as you did. :( I anxiously await for the Teleporter modules to be available. I could also attempt to duplicate what MrMajestic has done. I am guessing the PCM/DSD switch will still be needed with the Teleporter?

Edited by user Saturday, March 3, 2012 2:40:14 PM(UTC)  | Reason: Not specified

I hope you make enough to go around...... ;)

I attached some wires per steinholien’s suggestion. Not my best or neatest work but no shorts and CD and SACD still play using the 3910's RCA outs.



I attached the wires to four SMD resistors that trace to pin 4,5, 6 and 7 of the PCM1796 chip. The ground (8) was picked up on one side of that cap. But no joy with the wires attached to the Sidecar; it won’t play CD or SACD. The relay clicks on the Sidecar when selected and it pulls another 15 or so mA when selected. The wires are connected between the chip input and the resistors/cap. Circuit 8 comes out and around to the cap lead the Black wire is attached to. I get input through the 4 channel S/PIF input board with the Sidecar in the circuit and the Sidecar is not selected with the input switch.

After digging deeper in the data sheet I am confident I had good circuit connect information. Maybe one meter is too long for the wires?

Russ, will I stil need a PCM/SACD switch on the Denon with the Teleporter? Currently I only connect [either] pin 6 or 7 to the Sidecar for CD or SACD. I don't have both connected at the same time. Again, neither work, lock LED doesn't come on or flicker. Jumper SW2-8 "ON" for input remapping.

My wiring is

pin 4 - Brown
pin 5 - Green
pin 6 - Orange PCM Bit Clock
pin 7 - Blue DSD
Pin 8 - Black

Edited by user Tuesday, March 6, 2012 4:01:00 PM(UTC)  | Reason: Not specified

I shortened the wires to ~ 30cm (12-13 inches) and it still doesn't work. That is the shortest I can go without flipping things upside down or sideways. With CD playing, voltage at the Denon board, pin 5 data, and through the data wire is ~ 1.6v DC. Too low for a B III Sidecar input? Not sure what the Denon 1920 has for v out. I'll just have to wait for the Teleporter's and give them a try.

I also verified that each terminal on the flat connecting cable has continuity. I have some longer standoffs on the way to support the edge of the Sidecar that is hanging over open space.

I have an extra Sidecar board with relays that I damaged when I attempted to desolder and remove the double wide header. I can adapt that to do PCM/DSD switching in the Denon like MrMajestic has done.

Edited by user Monday, March 5, 2012 4:19:30 PM(UTC)  | Reason: Not specified

Might be that the wires is still to long. Your Buff is of course set up correctly? Input remapping "on", no PCM/DSD jumpers etc. If shielding is an issue, you can improve that by connecting the shield to chassi ground in the DAC.

Even if you got noise in your lines you will get some sound. Try connecting straight into BIII inputs and set the BIII to manual I2S/DSD. With input remapping on or off, you should get some sound.

Edited by user Tuesday, March 6, 2012 10:45:13 PM(UTC)  | Reason: Not specified

This was a problem I had with a relay board I was using to switch PCM from my Denon DVD-5910 and my DSD tapped DVD-1920 going to my DAC. The relays would trip one way, but not back. I was not using the sidecar though as I have the Buffalo II. I am using a relay board with 2 I2S (one is PCM and the other DSD) inputs and an I2S output to the Buffalo II. I would get a lock with the DSD signal when I did the toggle switch I installed in the front of my DAC chassis, but then it would not switch the relays back to PCM again. I thought it might be not enough voltage coming from the LCDPS that I was pulling dual power for the relay board and powering the LED for the power switch installed in my chassis. I have another LCDPS now but have yet to install it and see if it makes a difference.
Where are you pulling the Voltage from for the sidecar?

Greg

Sony DVPCX985 Mod.

I've got one of those "nifty" old 400 Disc Jukeboxes that supports DSD playback. The idea being I won't need to rip my SACDs if they are in a Jukebox (convenience factor here). The Sony uses an AK4358 DAC, so here are the DSD signal pin-outs:

on IC502 AK4358; the DAC
23 DSDL4 (Down-mix) to DSD Data Left (D1)
24 DSDR4 (Down-mix) to DSD Data Right (D2)
22 DCLK to DSD Bit Clock (DCK)

*OR* on IC905 CXD2753R; the DSD Decoder
62 PHREF0 to DSD Bit Clock (DCK)
55 DSADML to DSD Data Left (D1)
56 DSADMR DSD Data Right (D2)

In either case take the ground from IC905:
58 VSDSD to (G)

Notice that I'm using the DSD down-mix outputs from the DSD decoder (into DSD in #4 on the DAC). The schematics show output #4 going to the Stereo Line out jacks. While output #1 goes to the surround front, left and right jacks. So for pure stereo operation I'm thinking this is the proper call. For your reference here are ALL the DSD outputs from the 2753:

55 DSADML - Stereo DSD Left Chan down-mix (to #4L on the DAC)
56 DSADMR - Stereo DSD Right Chan down-mix (to #4R on the DAC)
64 DSAL - Surround DSD Left Front Chan (to #1L on the DAC)
66 DSAR - Surround DSD Right Front Chan (to #1R on the DAC)
69 DSAC - Surround DSD Center Chan (to #3L on the DAC)
71 DSASW - Surround DSD Woofer Chan (to #3R on the DAC)
74 DSALS - Surround DSD Left Rear Chan (to #2L on the DAC)
76 DSARS - Surround DSD Right Rear Chan (to #2R on the DAC)

I'm not sure that if a SACD is recorded with Stereo tracks if those outputs will come out the Surround Front L & R chans or the down-mix L & R chans. Also not sure if the 2753 synthesizes a down-mix from the surround tracks in the absence of actual stereo tracks.

Anybody know the answer to this?

'sig

Edited by user Friday, October 5, 2012 6:34:16 AM(UTC)  | Reason: Corrected pin #s, asked final question. ;-)