AK4122A Datasheet, PDF (1/54 Pages) Asahi Kasei Microsystems – 24-Bit 96kHz SRC with DIR

[AK4122A]
AK4122A
24-Bit 96kHz SRC with DIR
GENERAL DESCRIPTION
The AK4122A 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 AK4122A, the system can take very simple configuration because the AK4122A has an internal
PLL and does not need any master clock at slave mode. Then the AK4122A 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 (typ. 3.3V)
5. Ta = −10 ∼ 70°C
6. Package : 48pin LQFP
MS1076-E-01
-1-
2010/05