AK4122

ASAHI KASEI [AK4122] AK4122 24-Bit 96kHz SRC with DIR GENERAL DESCRIPTION The AK4122 is a digital sample rate converter (SRC) with the digital audio receiver (DIR). The input sample rate ranges from 8kHz to 96kHz. The output sample rate is 32kHz, 44.1kHz, 48kHz or 96kHz. By using the AK4122, the system can take very simple configuration because the AK4122 has an internal PLL and does not need any master clock at slave mode. Then the AK4122 is suitable for the application interfacing to different sample rates like Car Audio, DVD recorder, etc. FEATURES 1. SRC Asynchronous Sample Rate Converter Input Sample Rate Range (fsi) : 8kHz ∼ 96kHz Output Sample Rate (fso) : 32kHz, 44.1kHz, 48kHz, 96kHz Input to Output Sample Rate Ratio : 0.33 to 6 THD+N : −113dB I/F format : MSB justified, LSB justified (16/24bit) and I2S compatible Clock for Master mode : 256/384/512/768fs SRC Bypass mode Soft Mute Function 2. DIR 4-Channel Inputs Selector & 1-Channel Through Output AES3, IEC60958, S/PDIF, EIAJ CP1201 Compatible Low Jitter Analog PLL PLL Lock Range : 32kHz ∼ 96kHz Auto detection - Non-PCM Bit Stream - DTS-CD Bit Stream - Validity Flag - Sampling Frequency (32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz) - Unlock & Parity Error - DAT Start ID 40-bit Channel Status Buffer Burst Preamble bit Pc, Pd Buffer for Non-PCM bit streams Q-subcode Buffer for CD bit streams 3. 4-wire Serial µP Interface 4. Power Supply AVDD: 3.0 ∼ 3.6V (typ. 3.3V) DVDD: 3.0 ∼ 3.6V (ty...