AK4115 Datasheet, PDF (1/64 Pages) Asahi Kasei Microsystems – High Feature 192kHz 24bit Digital Audio Interface Transceiver

ASAHI KASEI
[AK4115]
AK4115
High Feature 192kHz 24bit Digital Audio Interface Transceiver
GENERAL DESCRIPTION
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.
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
† De-emphasis 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
MS0573-E-00
-1-
2006/12