DESCRIPTION
This audio adaptor lets you easily add high quality 16 bit, 44.1 kHz sample rate (CD quality) audio to your projects with the Teensy 4.0 (Rev D). It supports stereo headphone and stereo line-level output, and also stereo line-level input or mono microphone input.
The Teensy Audio Library lets you use the input and output simultaneously together with a toolkit of audio processing objects, to easily create all types of sophisticated audio applications. You can play multiple sound files, create synthesized waveforms, apply effects, mix multiple streams and output high-quality audio to the headphones or line out pins.
FEATURES
| Function | Teensy 4.0 Pins Rev D | Shareable |
| Audio Data | 7, 8, 20, 21, 23 | |
| Audio Control | 18, 19 | SDA, SCL (other I2C chips) |
| Volume Pot | 15 (A1) | |
| SD Card | 10, 11, 12, 13 | MOSI, MISO, SCK (other SPI chips) |
| Memory Chip | 6, 11, 12, 13 | MOSI, MISO, SCK (other SPI chips) |
Signals to Teensy
The audio chip, part number SGTL5000, connects to Teensy using 7 signals. The I2C pins SDA and SCL are used to control the chip and adjust parameters. Audio data uses I2S signals, TX (to headphones and/or line out) and RX (from line-in or mic), and 3 clocks, LRCLK (44.1 kHz), BCLK (1.41 MHz) and MCLK (11.29 MHz).
| Signal | Rev D (Teensy 4.0) | Function |
| MCLK | 23 | Audio Master Clock, 11.29MHz |
| BCLK | 21 | Audio Bit Clock 1.41 or 2.82MHz |
| LRCLK | 20 | Audio Left/Right Clock, 44.1MHz |
| DIN | 7 | Audio Data from Teensy to Audio Shield |
| DOUT | 8 | Audio Data from Audio Shield to Teensy |
| SCL | 19 | Control Clock (I2C) |
| SDA | 18 | Control Data (I2C) |
| SCK | 13 | Data Storage (SPI) Clock |
| MISO | 12 | Data Storage (SPI) from SD/MEM to Teensy |
| MOSI | 11 | Data Storage (SPI from Teensy to SD/MEM |
| SDCS | 10 | Chip Select (SPI) for SD Card |
| MEMCS | 6 | Chip Select (SPI) for Memory |
| Vol | 15 / A1 | Volume Thumbwheel (analog signal) |
RESOURCES
Teensy Audio Library
In September 2019, Rev D was created for Teensy 4.0. The circuitry is the same as Rev C, but the I2S digital audio signals and SPI signals for the SD card are routed to the pins Teensy 4.0 uses.
Prompt Shipping and Professional Packing
Our long-standing partnership with UPS FedEx DHL and other international carriers gives us the ability to provide an array of shipping services. Our warehouse staff is extremely skilled and will package your items according to our precise and precise specifications. Prior to shipping your items will be thoroughly inspected and secured. We deliver to hundreds of thousands of customers every day in different countries. The fact that we're dedicated to becoming the largest online retailer in the World is obvious. Both Europe as well as the USA have distribution and warehouse centers.
Note: Orders that contain more than one item are assigned a processing period depending on the item.
We will inspect each and every one of the items ordered before shipping. Today, the majority orders will be sent within 48 hours. The delivery time is estimated to be between 3 and seven days.
Returns
The stock market is always changing. It is not managed entirely by us since we're involved with several parties such as the factory and the storage. Stock levels can fluctuate at any given time. Be aware that your order may be unable to fill after you place the order.
Our policy lasts for 30 days. Unfortunately, if 30 days have passed since you purchased your item, we cannot offer you a return or exchange.
You can only return a product when it's unopened and is in the same state as when you received it. It must also be returned in the original packaging.
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Component
Audio
