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ASAHI KASEI
[AK4589]
AK4589
2/8-Channel Audio CODEC with DIR
GENERAL DESCRIPTION
The AK4589 is a single chip CODEC that includes two channels of ADC and eight 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 AK4589 has a dynamic
range of 102dB for ADC, 114dB for DAC and is well suited for digital surround for home theater audio.
The AK4589 also has the balance volume control corresponding to the Dolby Digital (AC-3) system.
The also has digital audio receiver (DIR) and transmitter (DIT) compatible with 192kHz, 24bits. The DIR
has 8-channel input selector and can automatically detect a Non-PCM bit stream. The AK4589 provides
a compatibility of hardware and software with the AK4588.
*Dolby Digital (AC-3) is a trademark of Dolby Laboratories.
FEATURES
† ADC/DAC part
2ch 24bit ADC
- 64x Oversampling
- Sampling Rate up to 96kHz
- Linear Phase Digital Anti-Alias Filter
- Single-Ended Input
- S/(N+D): 92dB
- Dynamic Range, S/N: 102dB
- Digital HPF for offset cancellation
- Overflow flag
8ch 24bit DAC
- 128x Oversampling
- Sampling Rate up to 192kHz
- 24bit 8 times Digital Filter
- Differential Outputs
- On-chip Switched-Capacitor Filter
- S/(N+D): 94dB
- Dynamic Range, S/N: 114dB
- Individual channel digital volume with 128 levels and 0.5dB step
- Soft mute
- De-emphasis for 32kHz, 44.1kHz, 48kHz
- Zero Detect Function
High Jitter Tolerance
Extenal Master Clock Input:
- 256fs, 384fs, 512fs (fs=32kHz 48kHz)
- 128fs, 192fs, 256fs (fs=64kHz 96kHz)
- 128fs (fs=120kHz 192kHz)
MS0339-E-00
-1-
2004/09

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ASAHI KASEI
[AK4589]
DIR/DIT Part
AES3, IEC60958, S/PDIF, EIAJ CP1201 Compatible
Low jitter Analog PLL
PLL Lock Range : 32kHz to 192kHz
Clock Source: PLL or X'tal
8-channel Receiver input
2-channel Transmission output (Through output or DIT)
Auxiliary digital input
De-emphasis 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
Up to 24bit Audio Data Format
Audio I/F: Master or Slave Mode
40-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
Two Master Clock Outputs: 64fs/128fs/256fs/512fs
TTL Level Digital I/F
4-wire Serial and I2C Bus µP I/F for mode setting
Operating Voltage: 4.75 to 5.25V with 5V tolerance
Power Supply for output buffer: 2.7 to 5.25V
80pin LQFP Package (0.5mm pitch)
AK4588 compatible w/o analog outputs
MS0339-E-00
-2-
2004/09

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ASAHI KASEI
[AK4589]
Block Diagram
RX0
RX1
RX2
RX3
RX4
RX5
RX6
RX7
TX0
8 to 3
Input
Selector
PVSS PVDD R
Clock
Recovery
DAIF
Deco der
XTI XTO
X'tal
Oscillator
DEM
Clock
Generator
Audio
I/F
TX1
AVDD
AVSS
DVDD
DVSS
TVDD
VIN
B,C,U,
VOUT
LIN
RIN
LOUT1+
LOUT1-
ROUT1+
ROUT 1-
LOUT2+
LOUT2-
ROUT2+
ROUT 2-
LOUT3+
LOUT3-
ROUT3+
ROUT3-
LOUT4+
LOUT4-
ROUT4+
ROUT4-
DIT
AC- 3/M PE G
Detect
Error &
STATUS
Detect
Q-subcode
buffer
µP I/F
SCF
SCF
SCF
SCF
SCF
SCF
SCF
SCF
ADC
ADC
DAC
DAC
DAC
DAC
DAC
DAC
DAC
DAC
HPF
HPF
Audio
I/F
DATT
DEM
DATT
DEM
DATT
DEM
DATT
DEM
DATT
DEM
DATT
DEM
DATT
DEM
DATT
DEM
MCLK
LRCK
BICK
SDOUT
SDIN1
SDIN2
SDIN3
SDIN4
Format
Converter
MCKO1
MCKO2
LRCK2
BICK2
SDTO2
DAUX2
PDN
I2C
CSN
CCLK
CDTO
CDTI
INT0
INT1
MCLK
LRCK1
BICK1
DAUX 1
SDTO1
SDTI1
SDTI2
SDTI3
SDTI4
MS0339-E-00
-3-
2004/09

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ASAHI KASEI
Ordering Guide
AK4589VQ
AKD4589
-10 +70°C
80pin LQFP(0.5mm pitch)
Evaluation Board for AK4589
Pin Layout
[AK4589]
INT1
BOUT
TVDD
DVDD
DVSS
XTO
XT I
TEST3
MCKO2
MCKO1
COUT
UO UT
VOUT
SDTO2
BICK2
LRCK2
SDTO1
BICK1
LRCK1
CDTO
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
(Top View)
60 TEST1
59 RX1
58 NC
57 RX0
56 AVSS
55 AVDD
54 VREFH
53 VCOM
52 RIN
51 LIN
50 ROUT1+
49 ROUT1-
48 LOUT1+
47 LOUT1-
46 ROUT2+
45 ROUT2-
44 LOUT2+
43 LOUT2-
42 ROUT3+
41 ROUT3-
MS0339-E-00
-4-
2004/09

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ASAHI KASEI
[AK4589]
Compatibility with AK4588
Functions
AK4588
AK4589
DAC output
Single end
Differentianl
DAC S/(N+D)
90dB
94dB
DAC S/N
106dB
114dB
DAC Output voltage
Typ 3.0Vpp
Typ ±2.7Vpp
DAC AOUT
AOUT=0.6xVREFH
AOUT=0.54xVREFH
Load Resistance
5k ohm
2k ohm
Frequency Response 80kHz
±1.0
+0/-0.6
Output pin
#35,#37, #39,#41,#43,#45,#47,#49 #35 - #50
Power Supply voltage
Min=4.5V, Max=5.5V
Min=4.75V, Max=5.25V
(*) The AK4589 has two register maps including ADC/DAC part (compatible with the AK4588) and DIR/DIT part
(compatible with AK4588). Each register is selected by Chip Address.
MS0339-E-00
-5-
2004/09