ASAHI KASEI
[AK4112A]
AK4112A
High Feature 96kHz 24bit DIR
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
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PLL Lock Range : 22k~108kHz
o
Clock Source: PLL or X'tal
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4 channel Receivers input and 1 through transmission output
o
Auxiliary digital input
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De-emphasis for 32kHz, 44.1kHz, 48kHz and 96kHz
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Dedicated Detect Pins
·
Non-PCM Bit Stream Detect Pin
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Validity Flag Detect Pin
·
96kHz Sampling Detect Pin
·
Unlock & Parity Error Detect Pin
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Supports up to 24bit Audio Data Format
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Audio I/F: Master or Slave Mode
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32bits Channel Status Buffer
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Burst Preamble bit Pc, Pd Buffer for Non-PCM bit stream
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Serial µP I/F
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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
MS0020-E-00
-1-
2000/3
AKM [ ASAHI KASEI MICROSYSTEMS ]
