Twisted Pear Audio Support
»
Product Support
»
Digital
»
Buffalo DAC
»
BIII - SE --> Switching inputs using an I2C controller
Rank: Member
Groups: Member
Joined: 2/1/2012(UTC)
Posts: 332
Location: The Netherlands
Thanks: 4 times
Was thanked: 18 time(s) in 18 post(s)
|
From the integration guide: Quote:Unlike the Buffalo III, it does not expose
all 8 digital inputs of the ES9018 chip. Instead (like the Buffalo II board) it has an on-board comparator.
So there is no need for level conversion like the Single S/PDIF Level Converter. - To which one of the ES9018 inputs is the consumer level SPDIF connected?
- Same question for D1 for the TTL level spdif.
I'm asking this because I'd like to figure out how to switch inputs using an external I2C controller. When using the BIII + sidecar the sidecar switches from spdif to pcm/dsd. Thus blocking the spdif signals to the chip. How can this be achieved with the BIII-SE? |
|
 1 user thanked Corpius for this useful post.
|
|
|
|
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)
|
B-III SE handles all this routing on the board. No more need for sidecar with this DAC. :)
The IP_S header has the switch signal pulled high (with a weak pull-up resistor) , all you need to do is pull that signal low with your controller.
Keep IP_S High and the DAC D1 input is fed by the comparator (which converts the consumer SPDIF to TTL) - BCK and the other inputs are pulled to GND.
Pull IP_S Low and the DAC BCK - D1 and the other appropriate inputs are fed via the header. So if you want to feed TTL level SPDIF to D1 at that point instead of PCM/DSD you can. most people will be applying PCM/DSD :)
|
2 users thanked Russ White for this useful post.
|
|
|
|
Rank: Member
Groups: Member
Joined: 2/1/2012(UTC)
Posts: 332
Location: The Netherlands
Thanks: 4 times
Was thanked: 18 time(s) in 18 post(s)
|
Thanks Russ, that answered all my questions! |
|
|
|
|
|
|
Rank: Member
Groups: Member
Joined: 2/1/2012(UTC)
Posts: 332
Location: The Netherlands
Thanks: 4 times
Was thanked: 18 time(s) in 18 post(s)
|
The spdif input on the DAC board is for consumer level spdif. The TOSLINK optical input module, does it output TTL level or consumer level? |
|
|
|
|
|
|
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)
|
The TORX module output is TTL unless you use a voltage divider. The newest revision of the TORX module has positions for resistors if you wish to add the voltage divider.
|
|
|
|
|
|
Rank: Member
Groups: Member
Joined: 2/1/2012(UTC)
Posts: 332
Location: The Netherlands
Thanks: 4 times
Was thanked: 18 time(s) in 18 post(s)
|
|
|
|
|
|
|
|
Twisted Pear Audio Support
»
Product Support
»
Digital
»
Buffalo DAC
»
BIII - SE --> Switching inputs using an I2C controller
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.
