ASAHI KASEI
[AK4564]
MS0140-E-01
2002/07
- 1 -
GENERAL DESCRIPTION
The AK4564 is a 16bit stereo CODEC with a built-in Microphone-Amp, Headphone-Amp and Speaker-Amp.
AK4564 has new recording features, a digital equalizer for microphone inputs and a digital ALC (Automatic
Level Control). The playback features also include LINEOUT-Amp, digital volume, Headphone-Amp and
Speaker-Amp. The AK4564 suits a portable application with a built-in LCD and etc. The AK4564 is housed in a
space-saving 48pin LQFP package.
FEATURE
1. Resolution: 16bits
2. Recording Function:
4-Input Selector (Internal MIC, External MIC, LINE x 2)
Pre-Amp
Digital EQ/HPF/LPF
Digital ALC (Automatic Level Control) circuit
FADEIN / FADEOUT
Digital HPF for offset cancellation (fc=3.7Hz@fs=48kHz)
Enable mixing of BEEP signal
3. Playback Function
Digital De-emphasis Filter (tc = 50/15
s, fs = 32kHz, 44.1kHz and 48kHz)
LINEOUT-Amp
Digital Volume: 0dB
- 65.25dB, Mute
Headphone-Amp
- Po: 5.3mW @ 16
(AVDD = 2.8V)
Speaker-Amp with built-in ALC
- BTL Output
- Po: 80mW @ 8
Enable mixing of BEEP signal
4. Power Management
5. ADC characteristics (LIN
ADC)
S/(N+D): 87dB, DR=S/N: 90dB
6. DAC characteristics (DAC
LINEOUT-Amp)
S/(N+D): 82dB, DR=S/N: 88dB
7. Master Clock: 256fs/384fs
8. Sampling Rate: 8kHz
50kHz
9. Audio Data Interface Format: MSB-First, 2's compliment
ADC, DAC: 16bit MSB justified, 16bit LSB justified, I
2
S
10. Ta = -20
85
C
11. Power Supply Voltage
CODEC, Speaker-Amp: 2.6
3.6V
MIC/Headphone/LINEOUT-Amp: 2.6
5.5V
12. Power Supply Current
All Power On: 30.5mA
13. Package: 48pin LQFP, 0.5mm Pitch
16bit CODEC with built-in ALC and MIC/HP/SPK-Amp
AK4564
ASAHI KASEI
[AK4564]
MS0140-E-01
2002/07
- 2 -
SDTO
MCLK
LRCK
BCLK
SDTI
INTR
EXTR
SPK
MUTET
VCOM
AVDD
AVSS
CSN CCLK CDTI
DVSS
DVDD
ADC
DAC
Audio I/F
Controller
Control Register I/F
PDN
INTL
MIC Power Supply
Pre-Amp
OATT
ROUT1
BEEP2
LOUT1
MPWR
HVCM
MRF
HVDD
Power Management
HPR
HPL
MIX
+2dBV
EXTL
ALC1
Pre-Amp
RIN1
LIN1
SVSS
SVDD
MUTE
MVDD
MVSS
BEEP1
LIN2
RIN2
LOUT2
+2dBV
ROUT2
ALC2
SPKP
AOUTP2
AOUTP1
DAC
HPP
ADC
MIC
MIC
EQ
LPF
HPF
Figure 1. AK4564 block diagram
ASAHI KASEI
[AK4564]
MS0140-E-01
2002/07
- 3 -
PIN/FUNCTION
No. Pin Name
I/O
FUNCTION
Power Supply
5 SVDD
-
Speaker Amp Power Supply Pin, +3.0V
6 SVSS
-
Speaker Amp Ground Pin
15 DVDD
-
Digital Power Supply Pin, +2.8V
16 DVSS
-
Digital Ground Pin
28 HVDD
-
Headphone-Amp, LINEOUT Power Supply Pin, +4.5V
30 HVCM
O
Headphone-Amp, LINEOUT Common Voltage Output Pin, 0.5 x HVDD
31 AVSS
-
Analog Ground Pin
32 AVDD
-
Analog Power Supply Pin, +2.8V
33 VCOM
O
Common Voltage Output Pin, 0.5 x AVDD
41 MVSS
-
MIC Amp Ground Pin
42 MVDD
-
MIC Amp Power Supply Pin, +2.8V
43 MPWR
O
MIC Power Supply Pin, 1.6V@MVDD=2.8V, Idd=3mA(max)
44 MRF
O
MIC Power Supply Ripple Filter Pin
Operation Clock
7 BCLK
I
Audio Serial Data Clock Pin
8 MCLK
I
Master Clock Input Pin
9 LRCK
I
Input/Output Channel Clock Pin
13 SDTI
I
Audio Serial Data Input Pin
14 SDTO
O
Audio Serial Data Output Pin
MIC Block
37 PREOR
O
Rch Pre-Amp Output Pin
38 PRENR
I
Rch Pre-Amp Negative Input Pin
39 EXTR
I
Lch External MIC Input Pin
40 INTR
I
Rch Internal MIC Input Pin
45 INTL
I
Lch Internal MIC Input Pin
46 EXTL
I
Rch External MIC Input Pin
47 PRENL
I
Lch Pre-Amp Negative Input Pin
48 PREOL
O
Lch Pre-Amp Output Pin
Control Data Interface
10 CDTI
I
Control Data Input Pin
11 CSN
I
Chip Select Pin
12 CCLK
I
Control Clock Input Pin
ADC Block
17 LIN1
I
Lch Line #1 Input Pin
19 RIN1
I
Rch Line #1 Input Pin
21 LIN2
I
Lch Line #2 Input Pin
23 RIN2
I
Rch Line #2 Input Pin
DAC Block
18 LOUT1
O
Lch Line #1 Output Pin
20 ROUT1
O
Rch Line #1 Output Pin
22 LOUT2
O
Lch Line #2 Output Pin
24 ROUT2
O
Rch Line #2 Output Pin
NOTE: All digital input pins must not be left floating.
ASAHI KASEI
[AK4564]
MS0140-E-01
2002/07
- 4 -
No. Pin Name
I/O
FUNCTION
Headphone Amp
26 HPL
O
Lch Headphone Amp Output Pin
27 HPR
O
Rch Headphone Amp Output Pin
29 MUTET
O
Headphone Amp MUTE Capacitor Pin
Speaker Amp Block
1 SP0
O
Speaker Amp positive Output Pin
3 SP1
O
Speaker Amp negative Output Pin
34 MOUT
O
Analog Mixing Output Pin
35 MIN
I
ALC2 Input Pin
Other Functions
2 MUTE
I
Mute Pin
"L": Normal Operation, "H" MUTE
4 PDN
I
Reset & Power-down Pin
"L": Reset & Power-down, "H": Normal Operation
25 BEEP2
I
Beep Signal #2 Input Pin
36 BEEP1
I
Beep Signal #1 Input Pin
NOTE: All digital input pins must not be left floating.
ASAHI KASEI
[AK4564]
MS0140-E-01
2002/07
- 5 -
n
Ordering Guide
AK4564VQ -20
+85
C 48pin LQFP (0.5mm pitch)
AKD4564 Evaluation board for AK4564
n
Pin layout
SP0
PREOL
1
MUTE
48
2
SP1
3
PDN
4
SVDD
5
SVSS
6
BCLK
7
MCLK
8
LRCK
9
CDTI
10
CSN
PRENL
47
EXTL
46
45
44
MPWR
43
MVDD
42
MVSS
41
INTR
40
EXTR
39
PRENR
38
SDTI
13
SDTO
14
DVDD
15
DVSS
16
LIN1
17
18
RIN1
19
ROUT1
20
LIN2
21
LOUT2
22
RIN2
23
36
35
34
33
32
31
30
29
28
27
26
BEEP1
MIN
MOUT
VCOM
AVDD
AVSS
HVCM
MUTET
HVDD
HPR
HPL
AK4564
Top View
LOUT1
INTL
MRF
PREOR
37
ROUT2
24
11
CCLK
12
25
BEEP2
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