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docs: DIY special edition (#10)
* docs: Add DIY-Special-edition instructions * feat: Revise infos about DIY special edition * docs: Extend info about the DIY special edition mod
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‎DIY-Special-edition.md‎

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# ISD9160 - Component Stuffing Guide
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This document details all components required to have custom audio functionality on Xbox One S/X and Series S/X non-limited-edition mainboards.
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See [Initial flashing of ISD9160](#reading-and-writing-the-chip-via-swd) when you are using a fresh ISD9160 chip (not salvaged from a Xbox console).
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## Xbox One S
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On this console revision the ISD9160 circuitry is located on the RF Unit.
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Speaker is connected via wires to the JST connector.
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STL Models for a bracket (X360, possibly salvagable): <https://www.printables.com/model/189049-xbox-360-slim-speaker-clip>
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> [!IMPORTANT]
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> Is the pitch for speaker connector correct?
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### Bill of Materials (BOM)
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| Reference | Qty | Package | Value | Component Type |
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| :----------------- | :-: | :--------- | :------------------| :--------------------- |
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| U4 | 1 | QFP48 | ISD9160 | Audio Codec IC |
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| R1 | 1 | 0402 | 10 kΩ | Resistor |
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| R29 | 1 | 0805 | 0 Ω | Resistor |
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| C7, C20, C35, C36 | 4 | 0805 | 10 μF | Capacitor |
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| | | | | |
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| J1 | 1 | JST | S2B-PH-K-S(LF)(SN) | Speaker Connector |
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| Speaker | 1 | ? | ? | Speaker |
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| C9, R6, R7, R22 | 4 | / | DNP | Do not place |
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**TODO**: C2, C8, C11, C13, C15, C18, C30, C48 - 0402 - ?
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**TODO**: Actual speaker with JST connector
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## Xbox One X
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On this console revision the ISD9160 circuitry is located on the motherboard.
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Speaker is soldered onto the mainboard.
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### Bill of Materials (BOM)
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| Reference | Qty | Package | Value | Component Type | Note |
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| :----------------- | :-: | :--------- | :--------------- | :--------------------- | :------------------------- |
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| U43 | 1 | QFP48 | ISD9160 | Audio Codec IC | |
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| R499 | 1 | 0402 | 10 kΩ | Resistor | |
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| R505 | 1 | 0805 | 0 Ω | Resistor | |
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| C606, C626, C638 | 3 | 0402 | 0.1 μF | Capacitor | 10%, 16V, X5R |
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| C240, C619 | 2 | 0402 | 1 μF | Capacitor | 10%, 6.3V, X5R |
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| C618 | 1 | 0603 | 4.7 μF | Capacitor | 10%, 6.3V, X5R |
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| C607 | 1 | 0805 | 10 μF | Capacitor | 10%, 16V, X5R |
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| C623, C639, C640 | 3 | 0805 | 10 μF | Capacitor | 20%, 6.3V, X5R |
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| SPKR_2P | 1 | SMD, 18mm | CS18-01S100-05-1, 8Ω, 1W | Onboard speaker | MFR: Challenge Electronics |
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| R502, R508 | 2 | / | DNP | Do not place | |
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## Xbox Series S
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On this console revision the ISD9160 circuitry is located on the motherboard.
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Speaker is soldered onto the mainboard.
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### Bill of Materials (BOM)
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| Reference | Qty | Package | Value | Component Type | Note |
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| :-----------------| :-: | :--------- | :--------------------- | :--------------------- | :------------------ |
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| U49 | 1 | QFP48 | ISD9160 | Audio Codec IC | |
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| R499 | 1 | 0402 | 10 kΩ | Resistor | |
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| R505 | 1 | 0805 | 0 Ω | Resistor | |
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| C606, C626, C638 | 3 | 0201 | 0.1 μF | Capacitor | 10%, 16V, X5R |
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| C240 | 1 | 0201 | 1 μF | Capacitor | 20%, 10V, X5R |
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| C619 | 1 | 0402 | 1 μF | Capacitor | 10%, 10V, X5R |
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| C618 | 1 | 0402 | 4.7 μF | Capacitor | 20%, 10V, X5R |
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| C623, C639, C640 | 3 | 0402 | 10 μF | Capacitor | 20%, 6.3V, X5R |
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| C607 | 1 | 0603 | 10 μF | Capacitor | 20%, 16V, X5R |
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| SPKR_2P | 1 | SMD, 18mm | CSMS18S4.8-8S0.3-P580F, 8Ω, 0.3W | Onboard speaker | MFR: Chinasound |
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| R502, R508 | 2 | / | DNP | Do not place | |
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## Xbox Series X
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On this console revision the ISD9160 circuitry is located on the motherboard.
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Speaker is soldered onto the mainboard.
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### Bill of Materials (BOM)
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| Reference | Qty | Package | Value | Component Type | Note |
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| :-----------------| :-: | :--------- | :------------------------------- | :----------------- | :------------------ |
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| U49 | 1 | QFP48 | ISD9160 | Audio Codec IC | |
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| R240 | 1 | 0402 | 10 kΩ | Resistor | |
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| R115 | 1 | 0805 | 0 Ω | Resistor | |
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| C157, C179, C181 | 3 | 0201 | 0.1 μF | Capacitor | 10%, 16V, X5R |
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| C146, C293 | 2 | 0201 | 1 μF | Capacitor | 20%, 6.3V, X5R |
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| C295 | 1 | 0402 | 4.7 μF | Capacitor | 20%, 10V, X5R |
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| C170, C176, C177 | 3 | 0402 | 10 μF | Capacitor | 20%, 6.3V, X5R |
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| C171 | 1 | 0603 | 10 μF | Capacitor | 20%, 16V, X5R |
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| SPKR_2P | 1 | SMD, 18mm | CSMS18S4.8-8S0.3-P580F, 8Ω, 0.3W | Onboard speaker | MFR: Chinasound |
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| R124, R126 | 2 | / | DNP | Do not place | |
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## Reading and Writing the chip via SWD
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> [!NOTE]
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> This section is a copy from [XOSFT wiki](https://xboxoneresearch.github.io/wiki/hardware/rf-unit/#reading-and-writing-the-chip-via-swd-recovery)
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Alternatively to I2C, the ARM SWD protocol can be used to read/write the chip.
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Requirements:
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Software
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- Linux
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- OpenOCD build, patched for ISD9160 support (see https://github.com/xboxoneresearch/DuRFUnitI2C/releases/tag/openocd_build)
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- Debugprobe firmware for PiPico (debugprobe_on_pico/2.uf2) - https://github.com/raspberrypi/debugprobe/releases
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Hardware
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- Raspberry Pi Pico/2
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- Soldering equipment
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- Sharp tweezers
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By default, the required pins on the IC are bridged on the RF Unit PCB. To enable usage of SWD, a trace needs to be cut, using pointy tweezers for example.
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Make sure to use a multimeter to confirm the trace was cut properly.
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![RF Unit SWD](./rf_unit_swd.jpg)
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Steps:
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- Do the trace-cut mentioned above
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- Flash debugprobe firmware on Pi Pico/2
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- Connect Pi Pico to ISD9160 SWD pins (see https://mcuoneclipse.com/2022/09/17/picoprobe-using-the-raspberry-pi-pico-as-debug-probe/), 3V3 and GND
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- Now extract and start OpenOCD
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```
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tar xvf openocd_isd9160.tar.gz
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cd openocd_isd9160/
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./bin/openocd -f ./share/openocd/scripts/interface/cmsis-dap.cfg -f ./share/openocd/scripts/target/numicro.cfg
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```
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- In another terminal window connect via telnet
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```
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telnet localhost 4444
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```
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- First, dump the original `APROM` firmware
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```
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flash read_bank 0 aprom_original.bin
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```
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- Now, erase the bank and write new `APROM` firmware
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```
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flash erase_sector 0 0 last
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flash write_bank 0 aprom_new.bin
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```
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- Profit
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‎README.md‎

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Tools for Xbox One RF Unit flash dumping, writing, and firmware editing with custom audio.
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> [!WARNING]
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> Use at your own risk!
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> [!IMPORTANT]
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> Check out [Compatibility](#compatibility) section!
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> [!NOTE]
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> Download the latest release from the [Releases page](https://github.com/xboxoneresearch/DuRFUnitI2C/releases)
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**Technical documentation**: [Xbox One RF Unit Hardware](https://xboxoneresearch.github.io/wiki/hardware/rf-unit/)
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## Compatibility
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| Console | Works Out-of-the-Box | DIY Mod Required |
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|---------|:--------------------:|:----------------:|
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| Xbox One PHAT (special edition) | ✅ | — |
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| Xbox One PHAT (standard) | ✅ | — |
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| Xbox One S | ❌ | ✅ |
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| Xbox One X | ❌ | ✅ |
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| Xbox Series S | ❌ | ✅ |
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| Xbox Series X | ❌ | ✅ |
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Consoles requiring the DIY mod need the ISD9160 and supporting passive components soldered on. See [DIY Special Editions](./DIY-Special-edition.md) for the full bill of materials and instructions.
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> [!NOTE]
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> **Fresh vs. salvaged ISD9160 chips:**
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> - **Salvaged chips** (removed from special-edition Xbox consoles) already contain firmware and can be flashed directly via I2C.
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> - **Fresh/new chips** (purchased new) have no firmware and must be programmed via SWD before I2C flashing is possible. See [ISD9160 Initial Flashing](./DIY-Special-edition.md#reading-and-writing-the-chip-via-swd).
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## Features
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- **RFUnit Tool**: Play sounds, dump flash, write flash
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## Requirements
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**Hardware:**
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- Xbox One PHAT or One S RF Unit board
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- Compatible RF Unit or Xbox motherboard (see [Compatibility](#compatibility))
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**I2C Interface Device (choose one):**
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- GreatFET One board
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## Quick Start
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**For Other Devices:**
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1. Wire I2C connections (see [Hardware Connections](#hardware-connections) section)
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2. Use GUI or CLI tool (see [Usage](#usage) section)
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### Salvaged Chip Workflow
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Use this path if your ISD9160 was removed from a special-edition Xbox console and already has firmware on it.
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1. Perform the [DIY mod](./DIY-Special-edition.md) — solder the ISD9160 and supporting components
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2. Wire I2C connections (see [Hardware Connections](#hardware-connections))
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3. Dump or write firmware using the GUI or CLI tool (see [Usage](#usage))
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4. Power cycle the console and press the Xbox button to verify the sounds play
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### Fresh Chip Workflow
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Use this path if your ISD9160 was purchased new and has no firmware.
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1. Perform the [DIY mod](./DIY-Special-edition.md) — solder the ISD9160 and supporting components
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2. **Cut the solder bridge between SWDIO and SWCLK** to allow programming via SWD
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3. Flash initial firmware via SWD (see [ISD9160 Initial Flashing](./DIY-Special-edition.md#reading-and-writing-the-chip-via-swd))
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4. Wire I2C connections (see [Hardware Connections](#hardware-connections))
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5. Write your custom firmware using the GUI or CLI tool (see [Usage](#usage))
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6. Power cycle the console and press the Xbox button to verify the sounds play
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## Hardware Connections
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### Direct Xbox Motherboard (FACET) Connections
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Required for the following console revisions:
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- Xbox One X
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- Xbox Series S
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- Xbox Series X
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See [FACET Hardware Documentation](https://xboxoneresearch.github.io/wiki/hardware/facet/)
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**Important:**
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**Pi Pico Connection - Xbox One S:**
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![Pi Pico RF Unit connection diagram One S](./pi_pico_diagram_one_s.png)
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> [!TIP]
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> For playback testing after flashing new firmware (on Xbox One S/X), supply both **3.3V** (ISD9160 logic) and **5V** (speaker amplifier) to the RF unit. Using only 3.3V will result in no audio output from the speaker.
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## Usage
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### Installation

‎rf_unit_swd.jpg‎

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