ASAHI KASEI
[AK4586]
MS0097-E-01
2001/12
- 1 -
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
Multi-channel Audio CODEC with DIR
AK4586
ASAHI KASEI
[AK4586]
MS0097-E-01
2001/12
- 2 -
- Burst Preamble bit Pc, Pd Buffer for Non-PCM bit stream
- Master Clock Outputs:128fs/256fs/512fs
I/F format: MSB justified, LSB justified(20bit,24bit), I
2
S or TDM
High Jitter Tolerance
TTL Level Digital I/F
4-wire Serial and I
2
C Bus P I/F for mode setting
Extenal Master Clock Input:
- 256fs, 384fs or 512fs for fs=44.1kHz to 48kHz
- 128fs, 192fs or 256fs for fs=88.2kHz to 96kHz
Power Supply: 4.5 to 5.5V
Power Supply for output buffer: 2.7 to 5.5V
Small 44pin LQFP
Block Diagram
ADC
LIN
HPF
ADC
RIN
HPF
DAC
DATT
LPF
LOUT1
DAC
DATT
LPF
ROUT1
DAC
DATT
LPF
LOUT2
DAC
DATT
LPF
ROUT2
DAC
DATT
LPF
LOUT3
DAC
DATT
LPF
ROUT3
Audio
I/F
Input
Selector
Clock
Recovery
Clock
Generator
X'tal
Oscillator
P I/F
XTI
XTO
MCKO
TX
RX1
RX2
RX3
RX4
SDTO
BICK
LRCK
SDTI1
SDTI2
SDTI3
CSN
CCLK
CDTI
CDTO
MCLK
BICK
SDOUT
LRCK
SDIN1
SDIN2
SDIN3
DAIF
Decoder
DEM
ASAHI KASEI
[AK4586]
MS0097-E-01
2001/12
- 3 -
Ordering Guide
AK4586VQ -40
+85
C
44pin
LQFP(0.8mm
pitch)
AKD4586
Evaluation Board for AK4586
Pin Layout
XTO
PDN
1
XTI/EXTCLK
44
2
DVDD
3
DVSS
4
TVDD
5
TX
6
MCKO
7
LRCK
8
BICK
9
SDTO
10
SDTI1
11
RX1
43
I2C
42
41
40
RX3
39
S
L
AVE
38
RX4
3
7
PVSS
36
R
35
PVDD
34
SDTI2
12
SDTI3
13
INT0
14
INT1
15
CAD1/CDTO
16
17
SCL/CCLK
18
CAD0/CSN
19
DZF2/OVF
20
AVSS
21
AVDD
22
33
32
31
30
29
28
27
26
25
24
23
RIN
LIN
ROUT1
LOUT1
ROUT2
LOUT2
ROUT3
LOUT3
DZF1
VCOM
VREFH
AK4586VQ
Top View
SDA/CDTI
RX2
TST
ASAHI KASEI
[AK4586]
MS0097-E-01
2001/12
- 4 -
Compatibility with AK4527B/29
Functions AK4527B/29
AK4586
ADC S/(N+D)
92dB
90dB
ADC Dynamic Range, S/N
102dB
100dB
DAC channel
6ch/8ch
6ch
Master mode
Not available
Available
Parallel mode
Available
Not available
Read operation for internal register
Not available
Available
Chip address at 4-wire serial mode
2bit selectable
fixed to "00"
Compatibility with AK4112A
Functions AK4112A AK4586
Power supply
2.7
3.6V
4.5
5.5V
Rock range
22k
108kHz
32k
96kHz
Master clock output
2 pins
1 pin
External master clock input
256fs/512fs
256fs/384fs/512fs for Normal speed
128fs/192fs/256fs for Double speed
Detect pins
4 pins
2 pins
DTS-CDdetect Not
available
Available
CRC Available
Not
available
Parallel mode
Available
Not available
I
2
C bus mode
Not available
Available
Digital input level
CMOS
TTL
ASAHI KASEI
[AK4586]
MS0097-E-01
2001/12
- 5 -
PIN/FUNCTION
No. Pin
Name
I/O
Function
1
XTO
O
X'tal Output Pin
XTI
I
X'tal Input Pin
2
EXTCLK
I
External Master Clock Input Pin
3 DVDD
- Digital Power Supply Pin, 4.5V
5.5V
4
DVSS
-
Digital Ground Pin, 0V
5 TVDD
- Output Buffer Power Supply Pin, 2.7V
5.5V
6
TX
O
Transmit channel (through data) Output Pin
7
MCKO
O
Master Clock Output Pin
8
LRCK
I/O
Input/Output Channel Clock Pin
9
BICK
I/O
Audio Serial Data Clock Pin
10
SDTO
O
Audio Serial Data Output Pin
11
SDTI1
I
DAC1 Audio Serial Data Input Pin
12
SDTI2
I
DAC2 Audio Serial Data Input Pin
13
SDTI3
I
DAC3 Audio Serial Data Input Pin
14
INT0
O
Interrupt 0 pin
15
INT1
O
Interrupt 1 pin
CDTO
O
Control Data Output Pin in 4-wire serial control mode
16
CAD1
I
Chip Address 1 Pin in I
2
C bus control mode
CDTI
I
Control Data Input Pin in 4-wire serial control mode
17
SDA
I/O
Control Data Input/Output Pin in I
2
C bus control mode
CCLK
I
Control Data Clock Pin in 4-wire serial control mode
18
SCL
I
Control Data Clock Pin in I
2
C bus control mode
CSN
I
Chip Select Pin in 4-wire serial control mode
19
CAD0
I
Chip Address 0 Pin in I
2
C bus control mode
DZF2
O
Zero Input Detect 2 Pin (Note 1)
When the input data of the group 1 follow total 8192 LRCK cycles with "0" input data,
this pin goes to "H".
20
OVF
O
Analog Input Overflow Detect Pin (Note 2)
This pin goes to "H" if the analog input of Lch or Rch is overflows.
21
AVSS
-
Analog Ground Pin, 0V
22 AVDD
- Analog Power Supply Pin, 4.5V
5.5V
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