192kHz 24-Bit DIR with 8:3 Selector & DIT

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The AK4115 is a 24-bit stereo digital audio transceiver that supports sampling rates up to 216kHz. The channel status bit decoder supports both consumer and professional modes and can automatically detect Non-PCM bit streams such as Dolby Digital or MPEG. The AK4115 supports a wide array of features a couple of them being; differential cable driver and receiver support, and an internal PLL that can support clock sources such as bi-phase and “word clock”. Control of AK4115 is achieved though a µP or pin-strapping (parallel mode) and it is packaged in a space- saving 64pin-LQFP.

* Dolby Digital is a trademark of Dolby Laboratories.

Key Features

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

• Very Low Jitter Analog PLL

• Synchronous / Asynchronous Mode

• Include Two X’tal Oscillators

• Clock Source: PLL or External Clock

- Reference Clock for PLL:

• Biphase signal: 22kHz to 216kHz

• External Clock (ELRCK pin): 22kHz to 216kHz

• 8-channel Receiver input

- One channel supports Differential Input

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

- One channel supports Differential Output (RS422 Line Output Buffer)

• Auxiliary Digital Input

• De­emphasis for 32kHz, 44.1kHz and 48kHz

• Detection Functions

- Non-PCM Bit Stream Detection

- DTS-CD Bit Stream Detection

- Sampling Frequency Detection:

(22.05kHz, 24kHz, 32kHz, 44.1kHz, 48kHz, 64kHz, 88.2kHz, 96kHz, 176.4kHz and 192kHz)

- Unlock & Parity Error Detection

- DAT Start ID Detection

• Up to 24bit Audio Data Format

• Audio Interface: Master or Slave Mode

• 192-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 Interface: 4-wire or I2C (max. 400kHz)

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

• Operating Voltage: 2.7 to 3.6V with 5V Logic Tolerance

• Package: 64pin LQFP

• Ta: ­20 to 85°C

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