ASAHI KASEI [AK4112A]
MS0020-E-00 2000/3
- 1 -
GENERAL DESCRIPTION
The AK4112A is a digital audio receiver (DIR) compatible with 96kHz, 24bits. The channel status
decoding supports both consumer and professional modes. The AK4112A can automatically detect a
Non-PCM bit stream. When combined with an AK4527 multi channel codec, the two chips provide a
system solution for AC-3 applications. The dedicated pins or a serial uP 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
o Supports AES/EBU, IEC958, S/PDIF, EIAJ CP1201
o Low jitter Analog PLL
o PLL Lock Range : 22k~108kHz
o Clock Source: PLL or X'tal
o 4 channel Receivers input and 1 through transmission output
o Auxiliary digital input
o De-emphasis for 32kHz, 44.1kHz, 48kHz and 96kHz
o Dedicated Detect Pins
• Non-PCM Bit Stream Detect Pin
• Validity Flag Detect Pin
• 96kHz Sampling Detect Pin
• Unlock & Parity Error Detect Pin
o Supports up to 24bit Audio Data Format
o Audio I/F: Master or Slave Mode
o 32bits Channel Status Buffer
o Burst Preamble bit Pc, Pd Buffer for Non-PCM bit stream
o Serial µP I/F
o Two Master Clock Outputs:128fs/256fs/512fs
o Operating Voltage: 2.7 to 3.6V with 5V tolerance
o Small Package: 28pin VSOP
o Ta: -40~85 C
High Feature 96kHz 24bit DIR
AK4112A