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Old 7th March 2012, 03:00 PM   #1311
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I am running 1.0.24 ALSA and have no problem with my TE8802L board. Of course I am running the latest firmware from Tenor so that may be the reason. I do not have a full Linux desktop and use it for programming only so no fancy player software installed. Command line mplayer gives me no problems.

I will dig out the Cmedia card later and see if there are problems.

George
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Old 7th March 2012, 05:30 PM   #1312
UnixMan is offline UnixMan  Europe
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from this post: ESS Sabre Reference DAC (8-channel)

Quote:
Originally Posted by wktk_smile View Post
In the Sabre dac app note, ESS recommends inverted MCLK when that's synchronous, although they only says "The inverted MCLK ensures that the Sabre noise as low as possible." and there's no further explanations.
I guess this is also true for the 9023. How is that done in AB1.1?
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Old 7th March 2012, 06:20 PM   #1313
borges is offline borges  Norway
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The I2S output uses a bit clock which is MCLK/2. The division is done in a JK flip-flop, so the bit clock going to the MCU is updated on rising MCLK edges. I don't know if the MCU adds any delay to the bit clock. All this stuff is probably tweakable.

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Old 7th March 2012, 10:53 PM   #1314
1audio is offline 1audio  United States
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The idea is to have the DAC do its internal transitions when the rest of the system is stable and silent. For example, the negative edge of a clock that everything else responds to on the positive edge. In a delta sigma dac it may be less of an issue than on a ladder dac with lots of things changing on word clock.
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Old 8th March 2012, 03:06 AM   #1315
nikkov is offline nikkov  Russian Federation
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Quote:
Originally Posted by 1audio View Post
Nikolay:
Why no 176.4? its becomming more common as a format and all the RR HRX is 176.4?
I do not know :-) Simply forgot. I'll include support 176.4 for the next version

Next version:
version with 176.4
This version of driver searches for the device by class GUID from .inf file, VID/PID in driver not used now.

Last edited by nikkov; 8th March 2012 at 03:29 AM.
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Old 8th March 2012, 10:25 AM   #1316
borges is offline borges  Norway
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Default Kits supply

Hi guys,

here is the status of kits I've got for sale:
- There are only four AB-1.1 kits left. Let me know in a pm if you'd like one now.
- AB-1.12 prototypes are coming out soon
- A batch of loose modules has been ordered
- In a month I have 7 more AB-1.1s available with new modules in them
- In a month I also have loose modules for sale
- Perhaps 4 weeks after that I have a new generation of complete and boxed units ready

Cheers,
Borge
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Old 8th March 2012, 10:54 AM   #1317
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Quote:
Originally Posted by GeorgeBoudreau View Post
I am running 1.0.24 ALSA and have no problem with my TE8802L board. Of course I am running the latest firmware from Tenor so that may be the reason. I do not have a full Linux desktop and use it for programming only so no fancy player software installed. Command line mplayer gives me no problems.
That sounds very interesting. I have just bought a Teac H-A01 which have a TE8802L and I can't get it to work on Linux.

Where can I download the latest TE8802L firmware?

Hugs,
Sandra
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Old 8th March 2012, 01:37 PM   #1318
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I have an NDA with Tenor and am developing products with their devices so I have the latest code that runs on the evaluation cards.

Each manufacturer contracts with Tenor for customized firmware and you would need to contact Teac to see if they are going to support Linux.

As far as I know there is no public utility that will allow you to upgrade your firmware and you would need to return the device for a 'factory upgrade'.

Sorry..

George


Quote:
Originally Posted by littlesandra88 View Post
That sounds very interesting. I have just bought a Teac H-A01 which have a TE8802L and I can't get it to work on Linux.

Where can I download the latest TE8802L firmware?

Hugs,
Sandra
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Old 8th March 2012, 02:06 PM   #1319
borges is offline borges  Norway
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Default AB-1.12 updates

By popular demand the AB-1.12 now has test points or open vias on all data pins for the ES9012/18. That should make it possible to patch in various configurations on the underside of the board.

An updated schematic is attached.

I will order the boards on Monday morning CET. Please let me know by then if you want a board. Mail to borge.strand@gmail.com with Subject="Order AB-1.12 Count" where Count is the number of boards you want.

BÝrge
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Old 8th March 2012, 02:19 PM   #1320
Turbon is offline Turbon  Sweden
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No chance of you BŲrge or George managing a group buy on 9012/18?

Brgds
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