ASAHI KASEI [AK4112B]
MS0078-E-02 2004/04
- 1 -







GENERAL DESCRIPTION
The AK4112B is a digital audio receiver (DIR) compatible with 96kHz, 24bits. The channel status
decoding supports both consumer and professional modes. The AK4112B can automatically detect a
Non-PCM bit stream. When combined with an AK4527B multi channel codec, the two chips provide a
system solution for AC-3 applications. The dedicated pins or a serial µP I/F can control the mode setting.
The small package, 28pin VSOP saves the board space.

*AC-3 is a trademark of Dolby Laboratories.

FEATURES
† Supports AES/EBU, IEC958, S/PDIF, EIAJ CP1201
† Low jitter Analog PLL
† PLL Lock Range: 22k~108kHz
† Clock Source: PLL or X'tal
† 4 channel Receivers input and 1 through transmission output
† Auxiliary digital input
† De-emphasis for 32kHz, 44.1kHz, 48kHz and 96kHz
† Dedicated Detect Pins
- Non-PCM Bit Stream Detect Pin
- Validity Flag Detect Pin
- 96kHz Sampling Detect Pin
- Unlock & Parity Error Detect Pin
† Supports up to 24bit Audio Data Format
† Audio I/F: Master or Slave Mode
† 32bits Channel Status Buffer
† Burst Preamble bit Pc, Pd Buffer for Non-PCM bit stream
† Serial µP I/F
† Two Master Clock Outputs: 128fs/256fs/512fs
† Operating Voltage: 2.7 to 3.6V with 5V tolerance
† Small Package: 28pin VSOP
† Ta: -40~85°C

High Feature 96kHz 24bit DIR
AK4112B