WM8804

DIR9001 ↔ WM8804

DIR9001: 96kHz SPDIF receiver, integrated PLL with low jitter (50ps RMS), supports 32-96kHz, I2S/Left-Justified output, 3-wire SPI control, 5V tolerant inputs, SSOP-28. WM8804: S/PDIF transceiver (Rx + Tx), 192kHz support (software mode), advanced jitter attenuating PLL (50ps RMS intrinsic), I2S/Left/Right/DSP output, 2/3-wire serial + hardware control, 2.7-3.6V, 20-lead SSOP. Отличия: DIR9001 — receiver only, WM8804 — transceiver (Rx + Tx). Частота: DIR9001 до 96kHz, WM8804 до 192kHz (software mode) / 96kHz (hardware mode). DIR9001 имеет dedicated DIR_SCK pin для recovered clock, WM8804 — configurable CLKOUT (512fs/256fs/128fs/64fs). Control: DIR9001 3-wire SPI, WM8804 — I2C (2-wire) или 3-wire. DIR9001 имеет built-in de-emphasis (32/44.1/48kHz), WM8804 — programmable de-emphasis flag. Non-audio detection: WM8804 поддерживает Dolby/DTS non-audio detection, DIR9001 — basic. Критично: WM8804 требует 12MHz crystal в hardware mode, DIR9001 — резонатор на 11.2896MHz. Разный размер корпуса — требуется адаптация PCB.