Hi,
in a (maybe stupid) moment I bought a China made DTS AC3 module from Ebay. Documented is only a simple pinout (see pict).
Has anybody more information about the meaning of the pins? The left side (RIN,LIN,FR,FL etc.) is analogue input/output, the meaning PA3, PB6, PB7, PD2, R0...3 are not clear. TX/RX surely for terminal connection.
Cheers,
Bernd
in a (maybe stupid) moment I bought a China made DTS AC3 module from Ebay. Documented is only a simple pinout (see pict).
Has anybody more information about the meaning of the pins? The left side (RIN,LIN,FR,FL etc.) is analogue input/output, the meaning PA3, PB6, PB7, PD2, R0...3 are not clear. TX/RX surely for terminal connection.
Cheers,
Bernd
Attachments
What one normally needs to do in such a case is download datasheets for each of the ICs on the board, and sketch out a schematic of how all the components are interconnected. Usually, cheap Chinese PCB are only double sided, not 4-layer, so its easy to follow traces around to see where they go. Between the datasheet information and a schematic its usually not too hard to figure out how to use the device.
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It's not encouraging that they don't identify the processor chip. Things like this tend to need a microcontroller to configure bass management, select inputs, etc. Maybe by counting the legs, figuring out which are power and ground and clock, you can compare it with known processor chips. But, if it's a general purpose DSP, identifying it won't help unless you also have documentation on the firmware it's running. Or are savvy enough to extract that firmware and reverse engineer it.
Here in Canada, you can pick up a used AV receiver with DD/DTS for that kind of price, and I've even seen an HDMI receiver with DTS MA/Dolby True HD for $20.
Here in Canada, you can pick up a used AV receiver with DD/DTS for that kind of price, and I've even seen an HDMI receiver with DTS MA/Dolby True HD for $20.
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It the part number scrubbed off the DSP chip, or if you hold it in the light at the right angle can you read it?
It is probably an older Cirrus Logic DSP, not a series 49xxx type. I cannot find the datasheets. @Markw4: no chance to read the type.
With DD or DTS the companies seem to be quiete closed minded.
The reason for choosing that board: @dangus It would fit into my existing self-built amp ;-) and the board I currently have, gets on my nerves: switching between modes (TV Dolby Digital 2.0 and 5.1) needs a manual reset. It is one of those 'audio gear' or 'audio rush' devices...
Every time the TV program switches from movie to commercials and v.v., it gets confused.
Just thought, someone knows more – never mind!
With DD or DTS the companies seem to be quiete closed minded.
The reason for choosing that board: @dangus It would fit into my existing self-built amp ;-) and the board I currently have, gets on my nerves: switching between modes (TV Dolby Digital 2.0 and 5.1) needs a manual reset. It is one of those 'audio gear' or 'audio rush' devices...
Every time the TV program switches from movie to commercials and v.v., it gets confused.
Just thought, someone knows more – never mind!
Underneath next to the CS8416 sits an SA-12C08, which I first thought is a PROM, but it seems to be a uC.
R0...R3 are the digital (S/PDIF) inputs to the CS 8416, which runs in SW mode.
PA3, PD2 PB6 PB7 are all connected to the SA-12C08.
And there is nothing about a 12C08 on the net.
I'll post my findings, if there will be any ;-)
R0...R3 are the digital (S/PDIF) inputs to the CS 8416, which runs in SW mode.
PA3, PD2 PB6 PB7 are all connected to the SA-12C08.
And there is nothing about a 12C08 on the net.
I'll post my findings, if there will be any ;-)