Questions tagged [spdif]
The spdif tag has no usage guidance.
23
questions
0
votes
1
answer
70
views
FPGA direct coaxial output is not working
I am using a Zynq device and trying to create a coaxial output port. To achieve this, I first connected the output of the I/O port to an LED and verified that it works correctly by inputting it into ...
0
votes
1
answer
130
views
How long is the S/PDIF preamble?
I have a simple S/PDIF protocol question that I can't find the answer to anywhere. I'm trying to understand the protocol, and everywhere I look says the same thing: The length of a preamble pattern is ...
- 620
1
vote
1
answer
100
views
Sample Rate Converter
I'm a novice when it comes to digital audio. What's the best way to convert 48 kHz I2S to 44.1 kHz? I have found the Texas Instruments SRC4392 but I do not believe that it will work for this ...
- 515
0
votes
1
answer
503
views
S/PDIF standard sample rate and channel status bits
I am planning to create a S/PDIF output stream for a digital audio device, but there is some ambiguity on the standard and how it is used. I would like to have the confusion cleared up.
To start, ...
- 23
0
votes
1
answer
135
views
Can I connect S/PDIF line from TOSLINK to coax?
Since the original analog audio in my device (MiSTerfpga) is bad, I'm using an external TOSLINK-to-RCA-stereo DAC. Now I'd like to merge this setup into the device. I'd like to know if wiring the S/...
- 1
2
votes
2
answers
493
views
SPDIF to CMOS logic
I am trying to get around my head on the three questions below.
Is SPDIF protocol is really driving 0.5 V pk-pk without having any DC offset?
If yes, HDMI1.4 mentions ARC protocol which is adhered ...
0
votes
1
answer
55
views
non-trademarked name for Toslink connector?
My PC motherboard has header pins for a SPDIF output and I want to an optical SPDIF transmitter.
When I search any of the main electronic stores for optical SPDIF transmitter I dont get any good hits, ...
- 309
0
votes
0
answers
93
views
Triggering a relay with S/PDIF?
I would like to use my audio interface to trigger a mains relay, as soon as the audio interface is turned on. Unfortunately, the interface turns on electronically, as opposed to using a mechanical ...
- 113
0
votes
2
answers
880
views
Audio: what do I need to do to get SPDIF data to a speaker?
I'm working on a speaker project where I'd like to use a microcontroller's SPDIF output (aka IEC 60958) to drive audio data to a speaker.
I've' been doing research on the topic, and I'm having trouble ...
- 1,418
2
votes
3
answers
3k
views
S/PDIF: TTL to Coax Converter
I'm working on converting TTL S/PDIF to Coaxial level (0.5Vpp). I have implemented the following circuit using a Toshiba TC7W04, which is a 74HC04-type inverter:
But it does not appear to work in ...
- 515
0
votes
1
answer
117
views
SMB Connector Grounding for S/PDIF Coax
I'm transmitting coax level S/PDIF over an SMB connector, and I'm wondering if the "body" pins (all pins that aren't the center) should be left floating, or if they should be connected to ground.
As ...
- 515
-1
votes
1
answer
205
views
Splitting Coaxial S/PDIF
I'm looking to output a single S/PDIF output from a BC127 to a coaxial output as well as a WM8804 S/PDIF transceiver at the same time. So far, it doesn't appear that this works, but there could be ...
- 515
1
vote
2
answers
2k
views
Logic inverter feedback resistor, SPDIF Input/Ouput circuit
What purpose of these resistors? Spdif level about 0.5Vpp. Do I need use feedback resistor if I will convert 3.3V SPDIF to 5V?
I want to make 4-way SPDIF Input/Output for WM8805 I2S<>SPDIF ...
- 11
0
votes
1
answer
180
views
WM8804 audio routing question
The WM8804 looks like the ideal candidate for a design I'm working on --- this single chip could replace the need for one receiver and one transmitter. The specific routing requirements are:
I need ...
- 2,153
1
vote
1
answer
225
views
XO selection for 44.1kHz audio
I'm implementing a WM8804 S/PDIF transmitter in a project I'm working on. The datasheet states that clocks from 10MHz - 27MHz are supported.
What crystal oscillator frequency should I look for in ...
- 515