Blockstream Jade Manual
1.1 Hardware composition
The Blockstream Jade v1 hardware consists of:
- ESP32-D0WDQ6-V3
- TFT screen
- Camera
- Knob
- Type-C to USB interface
- Power Management Chip
- Battery
The ESP32 is a single 2.4GHz Wi-Fi and Bluetooth combo chip designed using TSMC’s ultra-low-power 40nm technology. It is engineered for optimal power efficiency, RF performance, robustness, and versatility, delivering reliable performance in diverse applications and power management environments.
The LCD is a 1.14-inch color display powered by ST7789 driver, with a resolution of 135×240 pixels. Working temperature: -30°C to 85°C.
The power management chip is the AXP192 from X-Powers. The operating voltage ranges from 2.9V to 6.3V, with a charging current of 1.4A.
2. PIN DESCRIPTION
2.1 USB interface
Blockstream Jade v1 is equipped with a Type-C USB interface, which supports USB 2.0 standard communication protocols.
3. FUNCTIONAL DESCRIPTION
This chapter describes the various modules and features of the ESP32-D0WDQ6-V3.
3.1 CPU and Memory
The ESP32 contains one or two low-power Xtensa® 32-bit LX6 microprocessors with the following features:
- 448 KB ROM for booting programs and core functions
- 520 KB SRAM for instruction and data storage
- 8 KB RTC SRAM for storing data that remains accessible in deep sleep mode
- 8 KB RTC slow SRAM, accessible by the coprocessor in deep sleep mode
- 1 kbit eFuse memory, of which 256 bits are used for system information (such as MAC address and chipset ID), and 768 bits are reserved for user programs
- Support for flash encryption and chip ID
3.2 Storage description
3.2.1 External Flash and SRAM
The ESP32 supports multiple external QSPI flash memories and SRAM, with hardware-based AES encryption to protect user programs and data.
- External QSPI Flash and SRAM are accessed via caching.
- Up to 16 MB of external flash can be assigned to the CPU as code memory, supporting 8-bit, 16-bit, and 32-bit access.
- Up to 8 MB of external flash and SRAM can be assigned to the CPU as data storage.
- Flash only supports read operations, while SRAM supports both read and write operations.
3.3 RTC management and low power consumption
The ESP32 uses advanced power management techniques and can switch between several power-saving modes (see Table 5).
Energy saving modes:
- Active mode: RF chip is active and can transmit and receive signals.
- Modem sleep mode: CPU remains active, and clock is configurable. Wi-Fi/Bluetooth baseband and RF are disabled.
- Light sleep mode: The CPU is idle, but the RTC memory, peripherals, and ULP coprocessor remain operational. Wake-up events (such as MAC, RTC timer, or external interrupts) wake the chip.
- Deep Sleep Mode: Only the RTC memory and some peripherals remain active. Wi-Fi and Bluetooth data remain stored in the RTC. The ULP coprocessor remains active when needed.
- Power-down mode: The 8MHz oscillator and ULP coprocessor are disabled. RTC memory is disconnected from power. Only the RTC clock or an external GPIO trigger can wake up the chip.
Deep sleep-related energy conservation:
- Switch between Active Mode, Modem Sleep and Light Sleep mode based on a preset interval for Wi-Fi/Bluetooth connectivity.
- ULP coprocessor monitors sensor data in deep sleep mode and wakes up the main process if necessary.
4. OPERATION
- Press and hold the power button for 2 seconds to turn on the device.
- Press and hold the button for more than 6 seconds to turn off the device.
- Switch to photo mode from the home screen. The camera captures an image and displays it on the TFT screen.
- The USB cable must be kept connected during use. The lithium battery is used as a short-term storage to prevent power failure.
5. FCC STATEMENT
Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
This device complies with part 15 of the FCC Rules. Operation is subject to two conditions:
- This device may not cause harmful interference.
- This device must accept any interference received, including interference that may cause undesired operation.
FCC Radiation Exposure Statement
This equipment complies with FCC radiation limits set forth for an uncontrolled exposure environment.
- The equipment should be installed and operated with a minimum distance of 20 cm between the radiator and the body.