Welcome Guest! To enable all features please Login or Register.

Notification

Icon
Error

Login


Options
View
Go to last post Go to first unread
vladimirb0b  
#1 Posted : 9 years ago
vladimirb0b

Rank: Member

Groups: Member
Joined: 3/21/2012(UTC)
Posts: 58

Thanks: 1 times
I am trying to get a metronome to give 96 kHz 24 bit output without any input. What jumpers would I have to set to make that happen?

Thanks,
v

Edited by user 9 years ago  | Reason: changed title

vladimirb0b  
#2 Posted : 9 years ago
vladimirb0b

Rank: Member

Groups: Member
Joined: 3/21/2012(UTC)
Posts: 58

Thanks: 1 times
Perused the datasheet for the SRC4192 and found that your default values should work.
Feeding a 8804 the 8804 should operate in slave mode with jumpers:

AIF_MS - 0 ( slave mode)
TXSRC - 1 (I2S in)
AIFCONF1 - 0
AIFCONF0 - 1
(24 bit I2S)

I am hoping that Brian, Russ, or another generous forum member could try it like this(4192 -> 8804 -> SPDIF). I am getting just the non-audio light on.

Another possibility is that I have a broken board. If this works for someone else then I would like to troubleshoot. Unfortunately I only have a multimeter to make measurements.

Thanks,
v


edit: TI say a 4192 with no input should give a -135dB I2S output

Edited by user 9 years ago  | Reason: Not specified

vladimirb0b  
#3 Posted : 9 years ago
vladimirb0b

Rank: Member

Groups: Member
Joined: 3/21/2012(UTC)
Posts: 58

Thanks: 1 times
With no source:
All clocks are 1.65v and the metronome data out pin is 0v
The mute pin is 0.63v
OWL0 pin which should be zero is 0.0v

With Weiliang USB to I2s converter(tested working):
Input clocks are 1.65V
Din is 1.28v (to Metronome)

All metronome clocks are 1.65v and the metronome data out pin is 0v
Mute pin is 1V
OWL0 pin which should be zero is 0.0v


v

vladimirb0b  
#4 Posted : 9 years ago
vladimirb0b

Rank: Member

Groups: Member
Joined: 3/21/2012(UTC)
Posts: 58

Thanks: 1 times
Voltage across C1 is 3.3V
Any suggestions?
vladimirb0b  
#5 Posted : 9 years ago
vladimirb0b

Rank: Member

Groups: Member
Joined: 3/21/2012(UTC)
Posts: 58

Thanks: 1 times
Switched it out for a known *not* working metronome and same measurements. Clocks but no data. I am starting to think the chips are bad
Russ White  
#6 Posted : 9 years ago
Russ White

Rank: Administration

Groups: Administration, Customer
Joined: 10/24/2006(UTC)
Posts: 3,979
Location: Nashville, TN

Thanks: 25 times
Was thanked: 89 time(s) in 83 post(s)
Unfortunately I don't have a test rig set up for that scenario - where you able to get it working?
Rss Feed  Atom Feed
Users browsing this topic
GuestUser
Forum Jump  
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.