192kHz 24-Bit DIR with 8:1 Selector, GPIO & DIT

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  • Data Sheet


The AK4118A is a digital audio transceiver supporting 192kHz, 24bits. The channel status decoder supports both consumer and professional modes. The AK4118A can automatically detect a Non-PCM bit stream. When combined with the multi channel codec (AK4626A or AK4628A), the two chips provide a system solution for AC­3 applications. The dedicated pins or a serial µP I/F can control the mode setting. The small package, 48pin LQFP saves the system space.

*AC­3 is a trademark of Dolby Laboratories.

Key Features

• AES3, IEC60958, S/PDIF, EIAJ CP1201 Compatible

• Low jitter Analog PLL

• PLL Lock Range: 8kHz to 192kHz

• Clock Source: PLL or X'tal

• 8-channel Receiver input

• 2-channel Transmission output (Through output or DIT)

• Auxiliary digital input

• De­emphasis for 32kHz, 44.1kHz, 48kHz and 96kHz

• Detection Functions

• Non-PCM Bit Stream Detection

• DTS-CD Bit Stream Detection

• Sampling Frequency Detection

(32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz)

• Unlock & Parity Error Detection

• Validity Flag Detection

• DAT Start ID Detection

• Up to 24bit Audio Data Format

• Audio I/F: Master or Slave Mode

• 42-bit Channel Status Buffer

• Burst Preamble bit Pc and Pd Buffer for Non-PCM bit stream

• Q-subcode Buffer for CD bit stream

• Serial µP I/F (I2C, SPI)

• Two Master Clock Outputs: 64fs/128fs/256fs/512fs

• Operating Voltage: 2.7 to 3.6V with 5V tolerance

• 8GPIO Port

• RX Data Input Detection

• Small Package: 48pin LQFP

• Ta: ­10 to 70°C

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Block Diagram

Block Diagram

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