Yes, the PC and terminal are set to 115200. Can't vouch for the 1121 as I can't read its output 🙂)) but that's why I tried setting the PC and terminal software(s) at different speeds.
If I try sending a command, like set volume or +++, there's no response so it looks like gibberish is being output to the 1121 as well.
Remember, the dam1121 serial port is ttl level, the dam1021 have both ttl and rs232, where rs-232 beside voltage levels are inverted, need to match your interface cable....
My bad - brainfade. Too many things going on. Thanks, Søren; knew I was missing something. Is the serial port on the 1121 5V tolerant?
There is only about 3€ difference in price of the Si514 and the SI570 (if you buy them by 100).
For the next revision I would love to see only the SI570 (even if the 05% board gets 5€ more expensive).
For the next revision I would love to see only the SI570 (even if the 05% board gets 5€ more expensive).
Yes, I own a balanced Rev4 build and have built several 1021's for friends. So yes, I have a basis for comparison. My system is differential from beginning to end. Yes, I do prefer balanced systems - seem quieter, 'blacker' in background - and yes, I agree they need to be fully balanced from beginning to end or you're wasting time/money.
The 1121 struck me as a smidgeon more detailed and a bit 'easier' out-of-the-box than a single-ended 1021 I had on hand. And I appreciate the freedom to try different power supplies, isolate or not isolate and I like the small size - not to be discounted for packaging.
Greetings Guys. I am planning to purchase a dam1121 in the near future and, whilst I followed the early development of the 1021 I'm conscious I have a lot of catching up to do.
Can I make a couple of shortcuts with your help please...
Are these what I require to 'communicate' with the dam1121?
USB Direct to Serial Cable TPL2303TA TTL RS232 Converter Arduino RPi Breadboard | eBay
Terminal Software
How is DSD handled by the DAM, is it converted to PCM in the FPGA?
I plan to use a Beaglebone Black running the botic kernel as the source of my BCLK, LRCLK and DATA inputs. I'll probably run the dam1121 outputs into a tube buffer.
Thanks for any help you can offer.
Can I make a couple of shortcuts with your help please...
Are these what I require to 'communicate' with the dam1121?
USB Direct to Serial Cable TPL2303TA TTL RS232 Converter Arduino RPi Breadboard | eBay
Terminal Software
How is DSD handled by the DAM, is it converted to PCM in the FPGA?
I plan to use a Beaglebone Black running the botic kernel as the source of my BCLK, LRCLK and DATA inputs. I'll probably run the dam1121 outputs into a tube buffer.
Thanks for any help you can offer.
Typical! no sooner had I posted than I spotted the answer to the DSD question in the dam1121 manual!
Your USB to serial adapter looks OK for the 1121, since the latter has a TTL-level serial port.
Regarding the software, I don't know if Realterm is OK but I do know that ExtraPutty works.
Can I just check my understanding with respect to the strap configuration.
I plan to use a single dam1121 in simple L/R stereo, non-inverted mode. According to the manual that means I will run it in master mode.
For that configuration I make the following connections;
J2 pin4 - connect to ground via 5K resistor
J3 pin7 - connect to ground via 5K resistor
J3 pin9 - connect to ground via 5K resistor
J3 pin11 - connect to ground via 5K resistor
Sorry if this is basic stuff but there seemed a bit of confusion earlier in the thread and as the old adage says, "check twice, cut once".
Thanks
I plan to use a single dam1121 in simple L/R stereo, non-inverted mode. According to the manual that means I will run it in master mode.
For that configuration I make the following connections;
J2 pin4 - connect to ground via 5K resistor
J3 pin7 - connect to ground via 5K resistor
J3 pin9 - connect to ground via 5K resistor
J3 pin11 - connect to ground via 5K resistor
Sorry if this is basic stuff but there seemed a bit of confusion earlier in the thread and as the old adage says, "check twice, cut once".
Thanks
I used 6k resistors and mine don't initialise as hoped for. The boards are buried deep into a construction so I'm waiting to understand if its something else. Sören says he tested with 1k.
Config look ok to me for what you want. Connect both pin J2 P1 and P2 to VSS or it will not start.
Sören if you read this - what is fed by P1 resp. P2?
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Config look ok to me for what you want. Connect both pin J2 P1 and P2 to VSS or it will not start.
Sören if you read this - what is fed by P1 resp. P2?
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