serves as a digital bridge, converting high-speed USB data into clean digital audio streams like S/PDIF and I2S. Specification USB 2.0 High-Speed (UAC 1.0 & UAC 2.0) Maximum Resolution 16-bit / 24-bit PCM Supported Sampling Rates 44.1, 48, 88.2, 96, 176.4, and 192 KHz Digital Outputs 1x IEC60958 S/PDIF (Coaxial/Optical), 1x I2S pair Voltage Supply Range 1.8V to 3.3V (Dynamic Consumption Adjustment) Form Factor / Package 64-pin LQFP (7mm x 7mm) Operating System Compatibility & Driver Requirements Driver requirements for an
It acts as a bridge to take USB audio from a computer and send it via optical cable to a high-end external DAC or AV receiver. sa9123l driver
: Do not connect the 5V pin directly to a 3.3V-only MCU (e.g., ESP32, STM32 at 3.3V) – use a level shifter. serves as a digital bridge, converting high-speed USB
Independent measurements (from e.g., L7Audiolab ) show the SA9123L’s onboard clock recovery has over USB. That’s fine for $50 DACs, but audible? Probably not. However, an XMOS chip with external Crystek clocks can get down to 50 ps. For critical listening, use the SA9123L in asynchronous mode with a good external oscillator on the DAC side. Independent measurements (from e