ASAHI KASEI
[AK4586]
AK4586
Multi-channel Audio CODEC with DIR
GENERAL DESCRIPTION
The AK4586 is a single chip CODEC that includes two channels of ADC and six channels of DAC. The
ADC outputs 24bit data and the DAC accepts up to 24bit input data. The ADC has the Enhanced Dual Bit
architecture with wide dynamic range. The DAC introduces the new developed Advanced Multi-Bit
architecture, and achieves wider dynamic range and lower outband noise.
The AK4586 also has a digital audio receiver (DIR) compatible with 96kHz, 24bits. The AK4586 can
automatically detect a Non-PCM bit stream. The digital audio output can be selected from the ADC output
or the digital input. Control may be set directly by programmed through a separate serial interface.
The AK4586 has a dynamic range of 100dB for ADC, 106dB for DAC and is well suited for digital surround
for home theater and car audio. The AK4586 also has the balance volume control corresponding to the
AC-3 system. The AK4586 is available in a small 44pin LQFP package which will reduce system space.
*AC-3 is a trademark of Dolby Laboratories.
FEATURES
2ch 24bit ADC
- 64x Oversampling
- Sampling Rate up to 96kHz
- Linear Phase Digital Anti-Alias Filter
- Single-Ended Input
- S/(N+D): 90dB
- Dynamic Range, S/N: 100dB
- Digital HPF for offset cancellation
- Overflow flag
6ch 24bit DAC
- 128x Oversampling
- Sampling Rate up to 96kHz
- 24bit 8 times Digital Filter
- Single-Ended Outputs
- On-chip Switched-Capacitor Filter
- S/(N+D): 90dB
- Dynamic Range, S/N: 106dB
- Individual channel digital volume with 256 levels and 0.5dB step
- Soft mute
- Zero Detect Function
4 inputs 24bit DIR
- Supports IEC60958 consumer mode, S/PDIF,
EIAJ CP1201 consumer mode
- Low jitter Analog PLL
- PLL Lock Range: 32k
∼
96kHz
- Clock Source: PLL or X'tal
- 4 channel Receivers input and 1 through transmission output
- De-emphasis for 32kHz, 44.1kHz and 48kHz
- Dedicated Detect Pins
Non-PCM Bit Stream Detect, DTS-CD Bit Stream Detect,
Validity Flag Detect, 96kHz Sampling Detect,
Unlock & Parity Error Detect, Emphasis Detect, fs change Detect
- Supports up to 24bit Audio Data Format
- Audio I/F: Master or Slave Mode
- 32bits Channel Status Buffer
MS0097-E-01
-1-
2001/12
AKM [ ASAHI KASEI MICROSYSTEMS ]
