SparkFun Electronics - Breakout Board for VS1103 MIDI Decoder

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Breakout Board for VS1103 MIDI Decoder

sku: BOB-08953

Description: The VS1103b is a single-chip MIDI/ADPCM/WAV audio decoder and ADPCM encoder that can handle up to three simultaneous audio streams. It can also act as a MIDI synthesizer. General MIDI and SP-MIDI format files are played, with a maximum simultaneous polyphony of 40! This breakout board can be easily dropped into any project and can also drive 30 Ohm headphones directly.

Features:

Separate Audio and Digital 3.3V supplies
Onboard 12.288MHz oscillator

Documents:

Pricing

	17 in stock backorder allowed

$23.95	price
$21.56	10-99 (10% off)
$19.16	100+ (20% off)

	quantity

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Comments

2 comments

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sdh7

+3.4

| January 31, 2010 at 3:26 PM

+0.15

I think I've figured out what may be a slight design flaw in this breakout board - I think DVDD should be exposed as a pin on the breakout board, which would make tying a signal to the GPIO pins much easier. To work around this, I've carefully soldered a wire to the via coming off of pin 32 (TEST on the VS1103, which is normally connected to the IOPWR, aka DVDD signal) onto my protoboard to act as a 3.3V rail...

c-scott

| February 2, 2010 at 2:09 PM

Agreed: what the datasheet calls IOVDD (pins 6, 14, 19, and 32; also the other side of the RX resistor R9) should be separate, not shorted to what the datasheet calls CVDD (pins 5, 7, 24, 31). IOVDD wants to be a 3.3V supply, although you could have a cuttable trace shorting it to CVDD if you wanted to be fancy. IOVDD wants its own pad. CVDD is an awkward 2.7V supply, you don't need to expose it on a pad, the VCC pad is fine for that.