AKM AKD4537

ASAHI KASEI
[AKD4537]
AKD4537
Evaluation board Rev.B for AK4537
GENERAL DESCRIPTION
AKD4537 is an evaluation board for the AK4537, 16bit CODEC with built-in MIC/HP/SPK amplifier. The
AKD4537 can evaluate A/D converter and D/A converter separately in addition to loop-back mode (A/D
→ D/A). The AKD4537 also has the digital audio interface and can achieve the interface with digital audio
systems via opt-connector.
n Ordering guide
AKD4537
---
Evaluation board for AK4537
(Cable for connecting with printer port of IBM-AT compatible PC and control
software are packed with this. This control software does not operate on Windows
NT.)
FUNCTION
• DIT/DIR with optical input/output
• BNC connector for an external clock input
• 10pin Header for serial control mode
5V
Regulator
GND
3.3V
MIC
Control Data
BEEP
10pin Header
LIN2/
RIN2
HP
DSP
AK4537
10pin Header
LOUT/
ROUT
MOUT+
AK4114
Opt In
Opt Out
Figure 1. AKD4537 Block Diagram
* Circuit diagram and PCB layout are attached at the end of this manual
<KM069501>
2002/11
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ASAHI KASEI
[AKD4537]
1. Evaluation Board Manual
n Operation sequence
1) Set up the power supply lines.
[VCC]
(red)
= 5.0V
[AGND] (black)
= 0V
[DGND] (black)
= 0V
: for logic
: for analog ground
: for logic ground
Each supply line should be distributed from the power supply unit.
3.3V is supplied to AK4537 and AK4114 via the regulator.
2) Set up the evaluation mode, jumper pins. (See the followings.)
3) Power on.
The AK4537 and AK4114 should be reset once bringing SW2 “L” upon power-up.
n Evaluation mode
(1) Slave mode
(1-1) Evaluation of Recording block (MIC, ADC) using DIT of AK4114
(1-2) Evaluation of Playback block (HP, SPK, MOUT+) using DIR of AK4114
(1-3) Evaluation of Loop-back using AK4114
(1-4) All interface signals including master clock are fed externally.
AK4114’s audio interface format is fixed to I2S compatible.
AK4114 does not operate under fs = 32kHz, this mode corresponds to fs = 32kHz or more.
(1-1) Evaluation of Recording block (MIC, ADC) using DIT of AK4114
PORT2 (DIT) and X1 (X’tal) are used. DIT generates audio bi-phase signal from received data and which is
output through optical connector (TOTX176). Nothing should be connected to PORT1 (DIR) and PORT3
(ROM).
JP5
BICK2
JP6
LRCK2
JP7
LRCK
JP8
JP9
MCLK
BICK
JP10
SDTI
DIR
ADC
(1-2) Evaluation of Playback block (HP, SPK, MOUT+) using DIR of AK4114
PORT1 (DIR) is used. Nothing should be connected to PORT3 (ROM).
JP5
BICK2
JP6
LRCK2
JP7
LRCK
JP8
JP9
MCLK
BICK
JP10
SDTI
DIR
<KM069501>
ADC
2002/11
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ASAHI KASEI
[AKD4537]
(1-3) Evaluation of Loop-back using AK4114
X’tal oscillator (X1) is used. Nothing should be connected to PORT1 (DIR) and PORT3 (ROM).
JP5
BICK2
JP6
LRCK2
JP7
LRCK
JP8
JP9
MCLK
BICK
JP10
SDTI
DIR
ADC
(1-4) All interface signals including master clock are fed externally.
PORT3 (ROM) is used. Nothing should be connected to PORT1 (DIR).
JP5
BICK2
JP6
LRCK2
JP7
LRCK
JP8
JP9
MCLK
BICK
JP10
SDTI
DIR
ADC
(2) Master mode
(2-1) Evaluation of Recording block (MIC, ADC) using MCLK of AK4114
(2-2) Master clock is fed externally
(2-1) Evaluation of Recording block (MIC, ADC) using MCLK of AK4114
X’tal oscillator (X1) is used. Nothing should be connected to PORT1 (DIR) and PORT3 (ROM). It can be
evaluated at internal loop-back mode (LOOP bit = “1”). It is possible to evaluate at various sampling frequencies
using built-in AK4537’s PLL.
JP5
BICK2
JP6
LRCK2
JP7
LRCK
JP8
JP9
MCLK
BICK
JP10
SDTI
DIR
ADC
(2-2) Master clock is fed externally
PORT3 (ROM) is used and MCLK is fed from PORT3. Nothing should be connected to PORT1 (DIR). It can be
evaluated at internal loop-back mode (LOOP bit = “1”). It is possible to evaluate at various sampling frequencies
using built-in AK4537’s PLL.
JP5
BICK2
JP6
LRCK2
JP7
LRCK
JP8
JP9
MCLK
BICK
JP10
SDTI
DIR
<KM069501>
ADC
2002/11
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ASAHI KASEI
[AKD4537]
n Other jumper pins set up
1. JP1 (GND) : Connection between AGND and DGND.
OPEN : Both grounds are separated on board.
SHORT : Both grounds are connected on board.
2. JP4 (M/S) : Select master mode and slave mode
MASTER : Master mode
SLAVE : Slave mode
n The function of the toggle SW
Upper-side is “H” and lower-side is “L”.
[SW1] (MUTE): Switch of external mute circuit for Headphone-amp output. Keep “L” during normal operation.
[SW2] (PDN): Power down of AK4537 and AK4114. Keep “H” during normal operation.
n Indication for LED
[LED1] (ERF): Monitor INT0 pin of the AK4114. LED turns on when some error has occurred to AK4114.
n Serial Control
The AK4537 can be controlled via the printer port (parallel port) of IBM-AT compatible PC. Connect PORT4
(CTRL) with PC by 10 wire flat cable packed with the AKD4537.
Connect
PC
10 wire
flat cable
10pin
Connector
CSN
CCLK
CDTI
CDTO
AKD4537
10pin Header
Figure 2. Connect of 10 wire flat cable
<KM069501>
2002/11
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ASAHI KASEI
[AKD4537]
n Analog Input/Output Circuits
(1) Input Circuits
1. MIC Input Circuit
JP11
EXT/MICR
MICR
J1
MIC
EXT/MICR
EXT
JP3
MIC
INT/MICL
INT
Figure 3. MIC Input Circuit
(1-1) Analog signal is input to INT pin via J1 connector.(monoral)
JP3
MIC
INT
JP11
EXT/MICR
EXT
EXT
MICR
(1-2) Analog signal is input to EXT pin via J1 connector.
JP3
MIC
INT
JP11
EXT/MICR
EXT
EXT
MICR
(1-3) It is stereo MIC
JP3
MIC
INT
JP11
EXT/MICR
EXT
<KM069501>
EXT
MICR
2002/11
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ASAHI KASEI
[AKD4537]
2. BEEP Input Circuit
C1
1u
BPM
R1
20k
BEEPM
JP2
+
J2
BEEP
BPMS
C3
1u
R4
20k
BPR
BEEPR
+
BEEPL
Figure 4. BEEP Input Circuit
(2-1) Analog signal is input to BEEPR pin via J2 connector.
JP2
BPMS
BPM
BPR
(2-2) Analog signal is input to BEEPM pin via J2 connector.
JP2
BPMS
BPM
BPR
3. LINE Input Circuit
C45
1u
+
J3
LIN2/RIN2
LIN2
C46
1u
+
RIN2
Figure 5. LINE Input Circuit
<KM069501>
2002/11
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ASAHI KASEI
[AKD4537]
(2) Output Circuits
1. Headphone-amp Output Circuit
When faster muting speed than internal muting circuit is required, the following external muting circuit is
useful.
REG
1
E
3
Q1
RN2202
B
2
MUTE
C
C
R5
B
10k
C7
47u
E
R7
16
J6
HP
+
+
HPL
Q2
2SC3327
HPR
C9
47u
R8
16
REG
1
E
Q4
B
B
MUTE
2
E
3
Q3
RN2202
C
2SC3327 R12
10k
C
Figure 6. Headphone-amp Output Circuit
2. MOUT+ Output Circuit
R2
220
+
C2
J4
MOUT+
MOUT+
22u
R3
47k
Figure 7. MOUT+ Output Circuit
<KM069501>
2002/11
-7-
ASAHI KASEI
[AKD4537]
3. STEREO LINE Output Circuit
C47
22u
J5
LOUT/ROUT
+
R37
220
LOUT
R36
10k
C48
22u
+
R39
220
ROUT
R38
10k
Figure 8. STEREO LINE Output Circuit
4. SPEAKER Output Circuit
SPK1
020S16
CN1
SPN
2
SPP
1
L
R
Figure 9. SPEAKER Output Circuit
∗ AKM assumes no responsibility for the trouble when using the above circuit examples.
<KM069501>
2002/11
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ASAHI KASEI
[AKD4537]
2. Control Software Manual
n Set-up of evaluation board and control software
This evaluation board does not correspond to I2C control.
1. Set up the AKD4537 according to previous term.
2. Connect IBM-AT compatible PC with AKD4537 by 10-line type flat cable (packed with AKD4537). Take care of
the direction of 10pin header. (Please install the driver in the CD-ROM when this control software is used on
Windows 2000/XP. Please refer “Installation Manual of Control Software Driver by AKM device control software”.
In case of Windows95/98/ME, this installation is not needed. This control software does not operate on Windows
NT.)
3. Insert the CD-ROM labeled “AK4537 Evaluation Kit” into the CD-ROM drive.
4. Access the CD-ROM drive and double-click the icon of “akd4537.exe” to set up the control program.
5. Then please evaluate according to the follows.
n Operation flow
Keep the following flow.
1. Set up the control program according to explanation above.
2. Click “Port Setup” button.
3. Click “Write default” button.
4. Then set up the dialog and input data.
n Explanation of each buttons
1. [Port Setup] :
2. [Write default] :
3. [All Read] :
4. [Function1] :
5. [Function2] :
6. [Write] :
7. [Read] :
Set up the printer port.
Initialize the register of AK4537.
Read all registers of AK4537.
Dialog to write data by keyboard operation.
Dialog to evaluate IPGA and ATTL/ATTR.
Dialog to write data by mouse operation.
Read data by mouse operation.
<KM069501>
2002/11
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ASAHI KASEI
[AKD4537]
n Explanation of each dialog
1. [Function1 Dialog] : Dialog to write data by keyboard operation
Address Box:
Data Box:
Input register address in 2 figures of hexadecimal.
Input register data in 2 figures of hexadecimal.
If you want to write the input data to AK4537, click “OK” button. If not, click “Cancel” button.
2. [Function2 Dialog] : Dialog to evaluate IPGA and ATTL/ATTR
This dialog corresponds to only addr=0BH, 0CH and 0DH.
Address Box:
Input register address in 2 figures of hexadecimal.
Start Data Box:
Input start data in 2 figures of hexadecimal.
End Data Box:
Input end data in 2 figures of hexadecimal.
Interval Box:
Data is written to AK4537 by this interval.
Step Box:
Data changes by this step.
Mode Select Box:
If you check this check box, data reaches end data, and returns to start data.
[Example] Start Data = 00, End Data = 09
Data flow: 00 01 02 03 04 05 06 07 08 09 09 08 07 06 05 04 03 02 01 00
If you do not check this check box, data reaches end data, but does not return to start data.
[Example] Start Data = 00, End Data = 09
Data flow: 00 01 02 03 04 05 06 07 08 09
If you want to write the input data to AK4537, click “OK” button. If not, click “Cancel” button.
3. [Write Dialog] : Dialog to write data by mouse operation
There are dialogs corresponding to each register.
Click the “Write” button corresponding to each register to set up the dialog. If you check the check box, data
becomes “H” or “1”. If not, “L” or “0”.
If you want to write the input data to AK4537, click “OK” button. If not, click “Cancel” button.
<KM069501>
2002/11
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ASAHI KASEI
[AKD4537]
n Indication of data
Input data is indicated on the register map. Red letter indicates “H” or “1” and blue one indicates “L” or “0”. Blank is the
part that is not defined in the datasheet.
n Attention on the operation
If you set up Function1 or Function2 dialog, input data to all boxes. Attention dialog is indicated if you input data or
address that is not specified in the datasheet or you click “OK” button before you input data. In that case set up the dialog
and input data once more again. These operations does not need if you click “Cancel” button or check the check box.
<KM069501>
2002/11
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ASAHI KASEI
[AKD4537]
MEASUREMENT RESULTS
1.EXT mode (slave mode)
[Measurement condition]
• Measurement unit: Audio Precision, System two
• BICK: 64fs
• Bit: 16bit
• Measurement Frequency: 20∼ 20kHz
• Power Supply: AVDD=DVDD=PVDD=HVDD=3.3V
• Temperature: Room
• Input Frequency: 1kHz
• Sampling Frequency: 44.1kHz
[Measurement Results]
1.ADC (MIC) characteristics (MIC Gain = +20dB, IPGA=0dB, ALC1 = OFF, MIC à IPGA à ADC)
L[dB]
R[dB]
THD+N 20kHzLPF (-1dB)
81.8
81.8
DR
20kHzLPF + A-weighted
84.4
84.5
S/N
20kHzLPF + A-weighted
84.4
84.5
2. ADC (LIN2/RIN2) characteristics (IPGA=0dB, ALC1 = OFF, LIN2/RIN2 à IPGA à ADC)
L[dB]
R[dB]
THD+N 20kHzLPF (-1dB)
88.1
88.1
DR
20kHzLPF + A-weighted
91.4
91.3
S/N
20kHzLPF + A-weighted
91.4
91.2
3.DAC (LOUT/ROUT) characteristics (RL=10kΩ DAC à LOUT/ROUT)
L[dB]
R[dB]
THD+N
20kHzLPF (-3dB)
88.2
87.9
DR
20kHzLPF + A-weighted
91.0
90.7
S/N
20kHzLPF + A-weighted
90.9
90.7
4.DAC (MOUT+/MOUT-) characteristics (RL=20kΩ DAC à MOUT+/MOUT-)
+[dB]
-[dB]
THD+N 20kHzLPF (-3dB)
90.0
90.9
DR
20kHzLPF + A-weighted
92.8
94.2
S/N
20kHzLPF + A-weighted
92.8
94.1
5.DAC (HPL/HPR) characteristics (RL=22.8Ω, DATT=0dB, DAC à HPL/HPR)
L[dB]
R[dB]
THD+N
20kHzLPF (-3dB)
71.3
71.6
DR
20kHzLPF + A-weighted
89.1
89.2
S/N
20kHzLPF + A-weighted
89.0
89.1
<KM069501>
2002/11
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ASAHI KASEI
[AKD4537]
6.DAC (SPP/SPN) characteristics (RL=8Ω, DAC à MOUT2 à MIN à SPP/SPN)
SPKG
ALC2
[dB]
0
0
60.7
0
1
60.3
THD+N 20kHzLPF
1
0
61.4
1
1
61.8
0
0
90.0
0
1
72.4
DR
20kHzLPF + A-weighted
1
0
90.5
1
1
72.4
0
0
89.9
S/N
20kHzLPF + A-weighted
0
1
72.4
1
0
90.5
1
1
72.4
*Po=150mW:SPKG=0,ALC2=X, Po=300mW:SPKG=1,ALC2=0, Po=250mW:SPKG=1,ALC2=1
<KM069501>
2002/11
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ASAHI KASEI
[AKD4537]
2.PLOT DATA
2-1.ADC (LIN2/RIN2 à IPGA à ADC) PLOT DATA
AKM
AK4537 Rev.A A D C (LIN2/RIN2) THD+N vs. Input Level
(fs = 44.1kHz, fin = 1kHz)
-60
-62.5
-65
-67.5
-70
-72.5
-75
d
B
F
S
-77.5
-80
-82.5
-85
-87.5
-90
-92.5
-95
-97.5
-100
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
dBr
Figure 10. THD+N vs. Input Level
AKM
AK4537 Rev.A A D C (LIN2/RIN2) THD+N vs. fin
(fs=44.1kHz, -1dB Input)
07/16/02 11:14:35
-60
-65
-70
-75
d
B
F
S
-80
-85
-90
-95
-100
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Figure 11. THD+N vs. Input Frequency
<KM069501>
2002/11
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ASAHI KASEI
[AKD4537]
AKM
AK4537 Rev.A A D C (LIN2/RIN2) Linearity
(fs=44.1kHz, fin=1kHz)
07/16/02 11:22:17
+0
-10
-20
-30
-40
d
B
F
S
-50
-60
-70
-80
-90
-100
-110
-120
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
dBr
Figure 12. Linearity
AKM
AK4537 Rev.A A D C (LIN2/RIN2) Frequency Response
(fs=44.1kHz, -1dB Input)
07/16/02 11:26:17
-0
-0.2
-0.4
-0.6
-0.8
d
B
F
S
-1
-1.2
-1.4
-1.6
-1.8
-2
-2.2
-2.4
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Figure 13 Frequency Response
<KM069501>
2002/11
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ASAHI KASEI
AKM
[AKD4537]
AK4537 Rev.A A D C (LIN2/RIN2) FFT (fs=44.1kHz, fin=1kHz,
-1dB Input)
F F T p o int=16384, Avg=8
07/16/02 10:59:17
+0
-20
-40
-60
d
B
F
S
-80
-100
-120
-140
-160
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Figure 14. FFT Plot ( Input level=-1.0dBFS)
AKM
AK4537 Rev.A A D C (LIN2/RIN2) FFT (fs=44.1kHz, fin=1kHz,
-60dB Input)
F F T p o int=16384, Avg=8
07/16/02 11:01:01
+0
-20
-40
-60
d
B
F
S
-80
-100
-120
-140
-160
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Figure 15. FFT Plot ( Input level=-60.0dBFS )
<KM069501>
2002/11
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ASAHI KASEI
AKM
[AKD4537]
AK4537 Rev.A A D C (LIN2/RIN2) FFT (No signal Input)
FFT point=16384, Avg=8
07/16/02 11:03:03
+0
-20
-40
-60
d
B
F
S
-80
-100
-120
-140
-160
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Figure 16. FFT Plot ( No signal )
AKM
AK4537 Rev.A A D C (LIN2/RIN2) Crosstalk (fs=44.1kHz, -1dB
Input)
Upper@1kHz;Lch--->Rch, Lower@1kHz;Rch--->Lch
07/16/02 11:37:43
-70
-80
-90
d
B
-100
-110
-120
-130
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Figure 17. Crosstalk Plot
<KM069501>
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ASAHI KASEI
[AKD4537]
2-2.DAC(DAC à LOUT/ROUT) PLOT DATA
AKM
AK4537 Rev.A D A C (LOUT/ROUT) THD+N vs. Input Level
(fs=44.1kHz, fin=1kHz)
07/16/02 13:16:19
-40
-45
-50
-55
-60
d
B
r
A
-65
-70
-75
-80
-85
-90
-95
-100
-140
-120
-100
-80
-60
-40
-20
+0
dBFS
Figure 18. THD+N vs. Input Level
AKM
AK4537 Rev.A D A C (LOUT/ROUT) THD+N vs. Input Frequency
(fs=44.1kHz, fin=1kHz, Input Level=0dB)
07/16/02 13:22:57
-40
-45
-50
-55
-60
d
B
r
A
-65
-70
-75
-80
-85
-90
-95
-100
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Figure 19. THD+N vs. Input Frequency
<KM069501>
2002/11
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ASAHI KASEI
[AKD4537]
AKM
AK4537 Rev.A D A C (LOUT/ROUT) Linearity
(fs=44.1kHz, fin=1kHz)
07/16/02 13:32:54
+0
-10
-20
-30
-40
d
B
r
A
-50
-60
-70
-80
-90
-100
-110
-120
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
dBFS
Figure 20 Linearity
AKM
AK4537 Rev.A D A C (LOUT/ROUT) Frequency Response
(fs=44.1kHz, Input Level=-3dB)
07/16/02 13:39:00
-2
-2.2
-2.4
-2.6
d
B
r
-2.8
A
-3.2
-3
-3.4
-3.6
-3.8
-4
2k
4k
6k
8k
10k
12k
14k
16k
18k
20k
Hz
Figure 21. Frequency Response
<KM069501>
2002/11
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ASAHI KASEI
AKM
[AKD4537]
AK4537 Rev.A D A C (LOUT/ROUT) FFT (fs=44.1kHz, fin=1kHz,
-3dB Input)
FFT point=16384, Avg=8
07/16/02 11:53:56
+0
-20
-40
d
B
r
-60
A
-100
-80
-120
-140
-160
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Figure 22. FFT Plot ( Input level=-3dBFS )
AKM
AK4537 Rev.A D A C (LOUT/ROUT) FFT (fs=44.1kHz, fin=1kHz,
-60dB Input)
FFT point=16384, Avg=8
07/16/02 11:59:21
+0
-20
-40
d
B
r
-60
A
-100
-80
-120
-140
-160
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Figure 23. FFT Plot ( Input level=-60.0dBFS )
<KM069501>
2002/11
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ASAHI KASEI
[AKD4537]
AKM
AK4537 Rev.A D A C (LOUT/ROUT) FFT (No data Input)
FFT point=16384, Avg=8
07/17/02 17:24:12
+0
-10
-20
-30
-40
-50
-60
d
B
r
A
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
20
50
100
200
500
1k
2k
5k
10k
20k
5k
10k
20k
Hz
Figure 24. FFT Plot ( No signal )
AKM
AK4537 Rev.A D AC C rosstolk (fs=44.1kHz, Input Level=0dB)
Upper@1kHz Lch--->Rch, Lower@1kHz Rch--->Lch
+0
-10
-20
-30
-40
-50
d
B
-60
-70
-80
-90
-100
-110
-120
20
50
100
200
500
1k
2k
Hz
Figure 25. Crosstolk Plot
<KM069501>
2002/11
- 21 -
ASAHI KASEI
AKM
[AKD4537]
AK4537 Rev.A D A C (LOUT/ROUT) FFT (Out-band-noise)
FFT point = 16384, Avg = 8
08/23/02 18:40:15
+0
-20
-40
d
B
r
A
-60
-80
-100
-120
-140
-160
90
200
500
1k
2k
5k
10k
20k
50k
100k
Hz
Figure 26. Out-band-noise Plot
<KM069501>
2002/11
- 22 -
ASAHI KASEI
[AKD4537]
IMPORTANT NOTICE
• These products and their specifications are subject to change without notice. Before considering any
use or application, consult the Asahi Kasei Microsystems Co., Ltd. (AKM) sales office or authorized
distributor concerning their current status.
• AKM assumes no liability for infringement of any patent, intellectual property, or other right in the
application or use of any information contained herein.
• Any export of these products, or devices or systems containing them, may require an export license
or other official approval under the law and regulations of the country of export pertaining to customs
and tariffs, currency exchange, or strategic materials.
• AKM products are neither intended nor authorized for use as critical components in any safety, life
support, or other hazard related device or system, and AKM assumes no responsibility relating to any
such use, except with the express written consent of the Representative Director of AKM. As used
here:
(a) A hazard related device or system is one designed or intended for life support or maintenance of
safety or for applications in medicine, aerospace, nuclear energy, or other fields, in which its
failure to function or perform may reasonably be expected to result in loss of life or in significant
injury or damage to person or property.
(b) A critical component is one whose failure to function or perform may reasonably be expected to
result, whether directly or indirectly, in the loss of the safety or effectiveness of the device or
system containing it, and which must therefore meet very high standards of performance and
reliability.
• It is the responsibility of the buyer or distributor of an AKM product who distributes, disposes of, or
otherwise places the product with a third party to notify that party in advance of the above content and
conditions, and the buyer or distributor agrees to assume any and all responsibility and liability for
and hold AKM harmless from any and all claims arising from the use of said product in the absence
of such notification.
<KM069501>
2002/11
- 23 -
A
B
C
D
E
MOUT+
JP1
GND
AGND
ROUT
E
LOUT
RIN2
LIN2
BEEPM
BEEPL
E
BEEPR
DGND
1
MICR
JP11
EXT/MICR
2
40
MIN
MOUT2
ROUT
41
42
43
MOUT-
LOUT
44
45
MOUT+
46
RIN2
47
LIN2
48
BEEPM
50
49
BEEPR
D
BEEPL
51
+
RIN1
U1
LIN1
C5
1u
+
+
C44
1u
52
C4
1u
C6
1u
D
MICOUTL
MUTET
39
MICOUTR
HPL
38
HPL
EXT/MICR
HPR
37
HPR
MPE
HVSS
36
MPI
HVDD
35
REG
SPN
34
SPN
SPP
33
AVSS
M/S
32
AVDD
XTI/MCKI
31
PVDD
XTO
30
PVSS
DVSS
29
VCOC
DVDD
28
EXT
C8 1u
3
+
2.2k
4
C10
0.1u
R10 2.2k
5
+
R9
C11
10u
C12 1u
6
INT
+
7
C13
2.2u
+
AK4537
VCOM
C
SPP
C14
0.1u
8
C15 C16
10u 0.1u
+
9
REG
10
C17
0.1u
11
MCKI
C18
0.1u
R13
10
B
INT/MICL
12
+
C
C19
10u
B
NC
MASTER
SLAVE
JP4
M/S
26
MCKO
27
R18
51
BICK
LRCK
R17
51
25
BICK
24
23
R16
51
SDTO
SDTI
CDTO
CDTI
CCLK
CSN
PDN
R15
51
A
LRCK
SDTO
22
SDTI
21
I2C
20
CDTO
NC
19
CDTI/SDA
18
CCLK/SCL
17
PDN
15
14
16
NC
CAD0
13
C20
4.7n
CSN/CAD1
R14
10k
A
TEST1
Title
Size
A3
Date:
A
B
C
D
AKD4537
Document Number
Rev
AK4537
Monday, August 12, 2002
Sheet
E
B
1
of
5
A
B
C
D
E
REG
E
1
BPM
R1
20k
BEEPM
MUTE
JP2
BPMS
C3
1u
R4
20k
C
R5
BPR
B
BEEPR
10k
Q2
2SC3327
+
BEEPL
J4
MOUT+
R2
220
C2
E
+
J2
BEEP
B
C
+
E
Q1
RN2202
3
2
C1
1u
E
MOUT+
22u
C7
47u
+
J3
LIN2/RIN2
J6
HP
+
HPL
C45
1u
R3
47k
R7
16
+
LIN2
HPR
C9
47u
R8
16
REG
D
D
1
E
+
RIN2
E
Q4
B
Q3
RN2202
3
B
MUTE
C
2
C46
1u
2SC3327 R12
10k
C
MICR
J1
MIC
EXT
EXT
C
C
JP3
MIC
INT
SPK1
INT
020S16
CN1
SPN
2
SPP
1
L
R
B
B
C47
22u
+
R37
220
J5
LOUT/ROUT
LOUT
R36
10k
C48
22u
R39
220
+
A
A
ROUT
R38
10k
Title
Size
A3
Date:
A
B
C
D
AKD4537
Document Number
Rev
Input/Output
Monday, August 12, 2002
Sheet
E
B
2
of
6
B
C
D
E
VCC
1
L2
47u
6
5
6
5
GND
VCC
GND
OUT
DIR
4
3
2
1
2
PORT1
E
C21
0.1u
+ C28
10u
C27
0.1u
C22
0.1u
VCC
L1
10u
for 74HC14, 74HCT157, 74HCT04
1
2
C23
0.1u
C24
47u
T1
TA48M33F
IN
+
GND
A
REG
OUT
C25
0.1u
C26
0.1u
E
C29
10u
R19
470
+
REG
C30
0.1u
1
37
INT1
38
AVDD
39
40
R
AVSS
R20
18k
VCOM
41
42
RX0
43
NC
44
RX1
45
TEST1
47
46
RX2
D
NC
RX3
U2
48
C31
0.47u
D
R21
1k
U3A
IPS0
INT0
36
1
LED1
ERF
2
2
VCC
1
74HCT04
3
4
5
NC
OCKS0
DIF0
OCKS1
TEST2
CM1
DIF1
CM0
AK4114
C
6
7
NC
DIF2
35
34
33
32
C
PDN
31
4114_PDN
C32
5p
XTI
30
1
2
X1
11.2896MHz
IPS1
XTO
P/SN
DAUX
C33
5p
29
2
8
U3C
9
28
6
U3B
5
74HCT04
10
XTL0
MCKO2
27
XTL1
BICK
26
DIR_BICK
SDTO
25
DIR_SDTO
4
3
SDTO
74HCT04
DAUX
11
B
B
LRCK
24
MCKO1
23
22
DVSS
DVDD
21
C35
0.1u
DIR_LRCK
+
20
VOUT
UOUT
19
COUT
18
BOUT
17
TX0
TX1
16
14
13
VCC
C34
0.1u
+
VCC
15
DVSS
VIN
TVDD
12
DIR_MCLK
C36
10u
C37
10u
REG
PORT2
5
A
6
5
6
IN
VCC
IF
GND
DIT
4
3
2
1
A
R22
1k
C38
0.1u
Title
Size
A3
Date:
A
B
C
D
AKD4537
Document Number
Rev
DIR/DIT
Monday, August 12, 2002
Sheet
E
B
3
of
5
A
B
C
D
E
U4
11
MCKI
9
Y8
A8
12
Y7
A7
8
LRCK
13
Y6
A6
7
SDTI
14
Y5
A5
6
Y4
A4
Y3
A3
Y2
A2
JP5
BICK2
E
E
BICK
JP6
LRCK2
JP7
LRCK
DIR_LRCK
R23 51
15
CDTI
5
R24 51
16
CCLK
4
R25 51
D
CSN
17
PDN
18
10
Y1
A1
GND
G2
VCC
G1
3
D
2
19
C39
0.1u
20
REG
1
74LVC541
VCC
C
PORT4
1
2
3
4
5
10
9
8
7
6
JP8
MCLK
R26
10k
R29
10k
R31
10k
R27
R28
R30
2
3
4
5
6
7
8
9
CSN
CCLK
CDTI
CDTO
A1
A2
A3
A4
A5
A6
A7
A8
1
19
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
18
17
16
15
14
13
12
11
MCLK
BICK
LRCK
SDTI
VCC
DIR_BICK
10
9
8
7
6
VCC
R32
10k
74HCT541
ADC
CDTO
B
PORT3
1
2
3
4
5
ROM
G1
G2
R33 51
CTRL
JP9
BICK
U5
470
470
470
C
DIR_MCLK
DAUX
B
JP10
SDTI
VCC
2
R34
10k
U6A
1
2
74HC14
4
74HC14
5
6
SW1
MUTE
R35
10k
U6E
11
MUTE
74HC14
L
U6D
10
74HC14
H
9
8
4114_PDN
74HC14
SW2
PDN
C41
0.1u
A
2
C40
0.1u
2
A
D2
HSU119
3
3
U6C
1
H
3
L
U6B
1
D1
HSU119
DIR_SDTO
DIR
1
1
2
VCC
Title
Size
A3
Date:
A
B
C
D
AKD4537
Document Number
Rev
LOGIC
Monday, August 12, 2002
B
Sheet
E
4
of
5
A
B
C
D
E
E
E
D
D
U6F
13
12
74HC14
U3D
9
8
74HCT04
U3E
11
10
74HCT04
C
C
U3F
13
12
74HCT04
B
B
A
A
Title
Size
A3
Date:
A
B
C
D
AKD4537
Document Number
Rev
PIN
Monday, August 12, 2002
B
Sheet
E
5
of
5