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Summary of Contents for PI 2 Design PI2AES-LITE
- Page 1 Pi 2 Design – PI2AES-LITE Hardware Reference Manual – P2.0 - 12/8/2022 Pi 2 Design PI2AES-LITE Digital Pro Audio Hat Hardware Reference Manual © 2022 PI 2 Design PAGE 1...
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Page 2: Table Of Contents
Pi 2 Design – PI2AES-LITE Hardware Reference Manual – P2.0 - 12/8/2022 Table of Contents 1 Warranty ......................................3 2 Operating Specifications ................................. 4 2.1 PI2AES-LITE Operating specifications ........................... 4 3 Overview ......................................5 3.1 Introduction ..................................... 5 3.2 Block Diagram ..................................5 4 On-Board Devices .................................. -
Page 3: Warranty
This warranty is valid only for so long as the product is used intact as shipped from PI 2 Design. Any attempt or effort to alter the Product, including but not limited to any attempt to solder, de-solder, unplug, replace, add or affix any part or component of... -
Page 4: Operating Specifications
Pi 2 Design – PI2AES-LITE Hardware Reference Manual – P2.0 - 12/8/2022 2 2 2 2 OPERATING OPERATING OPERATING S S S S PECIFICATIONS OPERATING PECIFICATIONS PECIFICATIONS PECIFICATIONS 2.1 PI2AES-LITE OPERATING SPECIFICATIONS The PI2AES-LITE conforms to the following specifications: Specification... -
Page 5: Overview
OVERVIEW 3.1 INTRODUCTION The PI2AES-LITE , designed and manufactured by PI 2 Design, is a professional I/O Shield designed to bring Professional Studio Grade Audio to the Raspberry PI ® family of Single Board Computers. This low-cost Shield converts the Raspberry Pi ® I2S Interface to High Definition Digital Audio Coax, SPDIF Coax and Toslink Optical. -
Page 6: Figure 1 - Pi2Aes-Lite Block Diagram
Pi 2 Design – PI2AES-LITE Hardware Reference Manual – P2.0 - 12/8/2022 JUMPER LT3042 LT3042 Clock Select TOSLINK NDK NZ2520SD OPTO 24.576Mhz NDK NZ2520SD 22.792Mhz 1:1 Isolation GPIO Transformer I2S (Slave Mode) MCLK IN I2S OUPUT I2C CONTROL 1:1 Isolation... -
Page 7: On-Board Devices
PI2AES-LITE . 4.1 PI2AES-LITE I2C BUS DEVICES The following table describes the CPU I2C Bus usage of the PI2AES-LITE . Most of these addresses are set by the startup script supplied by Pi2Design. Refer to the respective device documentation for more detail. -
Page 8: Wm8804 Spdif Transmitter Notes
1. The WM8804 is controlled using the I2C port. Refer to the WM8804 documentation and Pi 2 Design supplied driver code for more detail. 2. The PI2AES-LITE is designed to operate the WM8804 in Master mode. In this mode the WM8804 receives its master clock from XIN and drives MCLK (unused), BCLK and LRCLK to the Pi. -
Page 9: Rpi Gpio
5 5 5 5 RPI RPI GPIO GPIO GPIO GPIO 5.1 OVERVIEW The PI2AES-LITE uses a number of signals from the RPi GPIO header for control and status purposes. This usage is defined in the following table. PUP/ PI2AES- Description/Notes LITE Name RPi +3.3V - Unused... -
Page 10: Rpi Gpio Notes
Pi 2 Design – PI2AES-LITE Hardware Reference Manual – P2.0 - 12/8/2022 PUP/ PI2AES- Description/Notes LITE Name GPIO25 Unused GPIO11 Unused GPIO8 Unused GPIO1 Unused ID_SDA Unused ID_SCL Unused GPIO5 Unused GPIO6 0 = Select 22.5792Mhz Clock Input to WM8804 1 = Select 24.5760Mhz Clock Input to WM8804... -
Page 11: Pi2Aes-Lite Power
6 6 6 6 PI2AES PI2AES PI2AES- - - - LITE PI2AES LITE LITE POWER LITE POWER POWER POWER 6.1 OVERVIEW The PI2AES-LITE is designed to be powered from the Raspberry PI 5V GPIO Pins 2 and 4. PAGE 11... -
Page 12: Pi2Aes-Lite Software
SOFTWARE 7.1 OVERVIEW Due to the various resources interfaced on the PI2AES-LITE , both internal and external to the RPi, it is necessary to initialize a large number of CPU registers and external devices before correct operation can begin. These values and their proper sequencing are beyond the scope of this document. -
Page 13: Connectors
Pi 2 Design – PI2AES-LITE Hardware Reference Manual – P2.0 - 12/8/2022 8 8 8 8 CONNECTORS CONNECTORS CONNECTORS CONNECTORS 8.1 OVERVIEW This section provides the type and location of the connectors on the PI2AES-LITE . Table 5 – PI2AES-LITE Connector Locations PAGE 13... -
Page 14: Document Revisions
Pi 2 Design – PI2AES-LITE Hardware Reference Manual – P2.0 - 12/8/2022 9 9 9 9 DOCUMENT REVISIONS DOCUMENT REVISIONS DOCUMENT REVISIONS DOCUMENT REVISIONS Date Revision Change 09/04/2022 P2.0 Preliminary Release Table 6 – Document Revisions PAGE 14... -
Page 15: Errata
Pi 2 Design – PI2AES-LITE Hardware Reference Manual – P2.0 - 12/8/2022 10 10 10 10 ERRATA ERRATA ERRATA ERRATA 10.1 OVERVIEW The External 5V Option has been removed due to voltage drop issues. There is currently no plan to fix. -
Page 16: Case Assembly
CASE ASSEMBLY CASE ASSEMBLY 11.1 OVERVIEW This section describes the Acrylic case included with the PI2AES-LITE and how to assemble it for the PI 3 or PI 4. 11.2 PART DESCRIPTIONS The acrylic case itself consist of 6 panels referred to as Bottom, Right, Left, Rear, Front and Top. -
Page 17: Figure 2 - Pi2Aes-Lite Acrylic Case Parts
Pi 2 Design – PI2AES-LITE Hardware Reference Manual – P2.0 - 12/8/2022 FRONT REAR LEFT RIGHT M2.5 30MM 18MM SCREW BOTTOM Figure 2 - PI2AES-LITE Acrylic Case Parts PAGE 17... -
Page 18: Assembly Step 1
Pi 2 Design – PI2AES-LITE Hardware Reference Manual – P2.0 - 12/8/2022 11.3 ASSEMBLY STEP 1 Attach the 30mm F-F standoffs to the PI using the 6mm M-F to hold them as shown in the following picture. PAGE 18... -
Page 19: Assembly Step 2
Pi 2 Design – PI2AES-LITE Hardware Reference Manual – P2.0 - 12/8/2022 11.4 ASSEMBLY STEP 2 Attach the bottom panel to the 6mm M-F standoffs as shown in the following picture. Note the orientation of the SD Card cutout. PAGE 19... -
Page 20: Assembly Step 3
Pi 2 Design – PI2AES-LITE Hardware Reference Manual – P2.0 - 12/8/2022 11.5 ASSEMBLY STEP 3 Attach the PI2AES-LITE to the Raspberry Pi as shown in the following picture. PAGE 20... -
Page 21: Assembly Step 4
Pi 2 Design – PI2AES-LITE Hardware Reference Manual – P2.0 - 12/8/2022 11.6 ASSEMBLY STEP 4 Place the various side panels into the respective bottom panel slots as shown in the following pictures. Note that there are two left side panels (with HDMI) and two front side panels (USB), one pair each for the PI3 and PI4. -
Page 22: Assembly Step 5
Pi 2 Design – PI2AES-LITE Hardware Reference Manual – P2.0 - 12/8/2022 11.7 ASSEMBLY STEP 5 Capture the side panels using the top panel and screw into place using 4 m2.5x6mm screws. Note the orientation of the cutout for the optical jack.
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