ASAHI KASEI
[AK4112B]
AK4112B
High Feature 96kHz 24bit DIR
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
MS0078-E-02
2004/04
-1-
