
Stream1955
The Stream1955 module contains the core functions of a network audio streaming client featuring a quad-core 1.8GHz ARM Cortex-53 CPU and a variety of data and control interfaces for flexible and economical use. Stream1955 also contains the digital signal processing and networking functions required for many kinds of next-generation network-enabled products. The module can be the core of a complete, stand-alone network player or can serve as an add-in module providing network and USB playback capability for a more sophisticated audio product.
A high-quality clock is provided to support high-performance A/D and D/A converters.
A WLAN 802.11a/b/g/n/ac/ax (in dual-band 2.4/5 GHz or tri-band 2.4/5/6 GHz configuration) and an Ethernet RMII/RGMII interface are provided for network connection. Two antennas are supported in a 2T2R configuration; one of these is shared between WLAN and Bluetooth. Up to two USB OTG interfaces are supported.
Bluetooth is supported with an internal WLAN coexistence interface.
All functions are incorporated on a small, 34x47mm low-profile PCB board featuring dual DF40 headers with 80 pins each, providing both mechanical and electrical connections to the base board.
Only a few external components are required to build up a complete product; however, Stream1955 also fits perfectly into complex product architectures.
Processor
Quad Core ARM Cortex-A53 up to 1.8GHz
Memory / Flash
8Gb DDR4 SDRAM, 16Gb eMMC Flash
Thermal Specification
Operating Temp: 0°C to +65°C
Dimensions
34 x 47mm
Wi-Fi
Wi-Fi 6 802.11a/b/g/n/ac/ax (Stream1955I, Stream1955K)
Wi-Fi 6E 802.11a/b/g/n/ac/ax (Stream1955IE, Stream1955KE)
Bluetooth
Bluetooth® Core 5.3
Bluetooth® Classic
Bluetooth® Low Energy
Multi-Stream Audio
Bluetooth® Listing Available
Bluetooth® LE Audio (Stream1832AE version only)
Auracast™ (Tx & Rx) (Stream1832AE version only)
Other connectivity
Ethernet RGMII/RMII
2x USB 2.0 OTG
Analog and digital (I2S) audio I/O
SPI for display connection
Multiple GPIO/UART/I2C/SPI interfaces
Power
- Single power supply: 3.7 V to 5.2 V
Mounting
- Low profile board-to-board
Audio Interfaces
- 4x PDM inputs (up to 4 digital microphones)
- Up to 12 I²S input, up to 12 I²S output
- SPDIF In/Out
Communication Interfaces
- up to 3x UART
- up to 2x SPI
- up to 3x I²C
- RMII, RGMII (for external PHY)
Display & Sensors
- SPI for displays
- 2x ADC inputs
Other Interfaces
- 2x USB 2.0 high-speed port (480 Mbps)
- SD card interface 2.0 compliant (1 and 4-bit; default or high-speed mode, 3.3 V)
Antenna Connections
- 2 microwave coaxial connectors (Wi-Fi + Bluetooth), antenna diversity switching
- Note: Not all interfaces can be used simultaneously; flexible multiplexing supported.
Certifications
- Wi-Fi, Bluetooth®, RED, CE, RoHS, REACH, FCC, IC
Long-term Availability
Stream210