Search found 78 matches

by Hannu
Wed 2019-12-11 10:46
Forum: Microcontroller Software
Topic: analog signal i2s
Replies: 9
Views: 228

Re: analog signal i2s

Few things to test: Just to make sure your SCI interface is working, try to adjust volume through it in normal decoding mode. If it works, SCI works. Also does your device have 12.288 MHz clock? If it is based on our reference designs, it should have it. There is not much to configure i2s as shown i...
by Hannu
Thu 2019-12-05 9:17
Forum: Stand-Alone Applications
Topic: Are VS10XX Plugins Standalone?
Replies: 9
Views: 380

Re: Are VS10XX Plugins Standalone?

Applications are standalone solutions. They are booted from SPI flash. Plugins are feature extensions which are sent through SCi interface with micro controller. For example equalizer is application on http://www.vlsi.fi/en/support/software/vs10xxapplications.html It is sent started from SPI flash. ...
by Hannu
Thu 2019-12-05 8:36
Forum: DSP and Audio Software
Topic: Does VS1053 Support i2s In and Out?
Replies: 5
Views: 321

Re: Does VS1053 Support i2s In and Out?

I2S on VS1053 is output only. It gets its data from sample rate converter before DAC, so it is just few SCI writes to enable it. And it doesn't consume any memory as the processing is done with hardware. Everything sent to DAC is sent also to I2S. See datasheet chapter 11.14. If you want input, VS10...
by Hannu
Thu 2019-11-28 14:05
Forum: Stand-Alone Applications
Topic: [Solved] Equalizer Without External Memory?
Replies: 7
Views: 248

Re: Equalizer Without External Memory?

Only VS1005G-F-Q and VS1205G-F-Q have internal flash/eeprom. None of VS10xx chips have any internal eeprom/flash.

The VS10xx applications web page has been updated to "external SPI EEPROM image"
Thank you for pointing out fuzzy wording.
by Hannu
Thu 2019-11-28 10:03
Forum: Stand-Alone Applications
Topic: [Solved] Equalizer Without External Memory?
Replies: 7
Views: 248

Re: Equalizer Without External Memory?

The VS1053 doesn't have internal flash. However with external SPI flash the values can be stored so that those survive the power loss. See figure 3 of http://www.vlsi.fi/fileadmin/software/VS10XX/VS1053_VS1063_Equalizer.pdf The values can be programmed to the SPI image file as shown on the document....
by Hannu
Fri 2019-11-01 16:51
Forum: DSP and Audio Software
Topic: Generating Frequency
Replies: 4
Views: 457

Re: Generating Frequency

If I tracked down to right Arduino library, https://github.com/madsci1016/Sparkfun-MP3-Player-Shield-Arduino-Library uint8_t SFEMP3Shield::enableTestSineWave(uint8_t freq) function is to enable the sine test. It uses the old sine test. Have a look at chapter 10.12.1 of the VS1053 datasheet http://ww...
by Hannu
Mon 2019-07-22 7:55
Forum: VS1010 Forum
Topic: VS1010 as a portable MIDI sequencer composing device
Replies: 3
Views: 352

Re: VS1010 as a portable MIDI sequencer composing device

Hi! I think this will end up as PCB project any way you go. If there was a ready solution, you could by it from some shop :) The VQFN68 package isn't easiest to solder, but it can be done with liberal amount of flux and hot air. The VS1010 doesn't require that much components. Have a look at minidem...
by Hannu
Fri 2019-07-12 8:41
Forum: VS1005 and VSOS Software
Topic: Buck converter for CVDD?
Replies: 3
Views: 417

Re: Buck converter for CVDD?

Hello! This is totally untested, so try and measure. It's true that best efficiency can be gained on CVDD. However this might have bad effects on audio performance if the switcher noise gets through. The recipe to investigate this is to set core voltage some working minimum voltage on given clock fr...
by Hannu
Wed 2019-07-10 7:24
Forum: Slave Decoder Applications
Topic: Schematic & PCB view for VS1003B-L
Replies: 7
Views: 759

Re: Schematic & PCB view for VS1003B-L

Hi!

I Checked that library. It has VS1003.

I took VS1003 from the web pack and saved it to own library. Hopefully this helps. And you get the power and groud pins. There might be the next issue as they are behind invoke symbol... But let's fix that if this library doesn't help.
by Hannu
Mon 2019-07-08 8:28
Forum: Stand-Alone Applications
Topic: Schematic Review for VS1003 application (power supply & signal tieoffs)
Replies: 8
Views: 1124

Re: Schematic Review for VS1003 application (power supply & signal tieoffs)

Hi Berry! We haven't done any new VS1003 design in last few years and couldn't find fresh and good BOM to check this out. VS1103 is close relative to VS1003 and the VS1103 module VSMD301 http://www.vlsi.fi/fileadmin/modules/vs1103mod04_sch.pdf has quite close to your capacitor and it uses 22p capaci...