ASAHI KASEI
[AKD4340-SB]
AKD4340-SB
AK4340 Evaluation Board Rev.0
General Description
AKD4340-SB is an evaluation board for AK4340 (192kHz sampling 24Bit
∆Σ
DAC). AKD4340-SB has a
digital audio interface (AK4113) of Optical or COAX input and can easily achieve the interface with digital
audio system. Therefore, it is easy to evaluate the sound quality of AK4340.
Ordering Guide
AKD4340-SB ---- AK4340 Evaluation Board
(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
On-board digital audio interface. (AK4113)
BNC Connector
BNC Connector
COAX In
AK4113
Opt In
TORX141
DIR
AK4340
BNC Connector
Rch
Lch
Figure 1. AKD4340-SB Block diagram
(* Circuit diagram and PCB layout are attached at the end of this manual.)
COAX is recommended for an evaluation of the Sound quality.
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[AKD4340-SB]
Operation sequence
1) Set up the power supply lines. (See “Other jumpers set-up”.)
Name
of jack
+15V
-15V
AGND
Color
of jack
Red
Blue
Black
Voltage
+12∼+15V
-4.5∼-13.2V
0V
Used for
Regulator T1, T2
HVEE of AK4340
GND
Comments and attention
This jack should be always connected to power supply.
This jack should be always connected to power supply.
This jack should be always connected to power supply.
Default
setting
+12V
-5V
0V
Table 1. Set up of power supply lines
Each supply line should be distributed from the power supply unit.
2) Set-up the jumper pins
3) Set-up the DIP switches. (See the followings.)
4) Power on
The AK4340 should be reset once by bringing SW1 (PDN) “L” upon power-up.
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Evaluation mode
1. Using DIR (COAX) (default)
It is possible to evaluate the AK4340 by using CD disk. The DIR generates MCLK, BICK, LRCK and SDATA from the
received data through BNC connector (J1). Setting of jumper is shown below.
COAX is recommended for an evaluation of the Sound quality.
JP1
OPT
COAX
(COAX)
(Default)
Figure 2. Jumper setting, when using DIR (COAX) (default)
2. Using DIR (Optical Link)
It is possible to evaluate the AK4340 by using CD disk. The DIR generates MCLK, BICK, LRCK and SDATA from the received
data through optical connector (PORT3: TORX141). Setting of jumper is shown below.
JP1
OPT
COAX
(OPT)
Figure 3. Jumper setting, when using DIR (Optical Link)
3. All clocks are fed through the PORT1.
Change the resistance as below.
R13: 5.1
Ω
open
R15, R17, R18: 100
Ω
open
R1, R2, R3, R8: open 100
Ω
or short (0
Ω
)
DIP Switch setting
[SW2]: AK4113 setting
No.
1
2
Pin
OCKS1
OCKS0
OFF
ON
Default
ON
OFF
Table 2. SW2 setting
AK4113 Master Clock setting
Refer to Table4
[SW3]: AK4340 setting
No.
1
2
3
4
Pin
SMUTE
P/S
ACKS
GAIN
OFF
Soft Mute pin in Parallel Mode : “Disable”
Parallel Control Mode
Manual Setting Mode
0dB (2Vrms)
ON
Soft Mute pin in Parallel Mode : “Enable”
Serial Control Mode
Auto Setting Mode
+1.94dB (2.5Vrms)
Default
OFF
OFF
ON
OFF
Table 3.
SW3 setting
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[AKD4340-SB]
The frequency of the master clock output is set by OCKS0 and OCKS1 as shown in Table 4.
OCKS1
0
1
1
OCKS0
0
0
1
MCLK Frequency
256fs @fs=88.2/96kHz
512fs @ fs=32/44.1/48kHz
128fs @ fs=176.4/192kHz
Table 4. MCLK Clock
Default
SW1 setting
[SW1](PDN): Reset of AK4340. Select “H” during operation
.
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[AKD4340-SB]
Control Software Manual
Set-up of evaluation board and control software
1. Set up the AKD4340-SB according to previous term.
2. Connect IBM-AT compatible PC with AKD4340-SB by 10-line type flat cable (packed with AKD4340-SB). 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 “AKD4340-SB Evaluation Kit” into the CD-ROM drive.
4. Access the CD-ROM drive and double-click the icon of “akd4340.exe” to set up the control program.
5. Then please evaluate according to the follows.
Operation flow
Keep the following flow.
1. Set up the control program according to explanation above.
2. Click “Port Reset” button.
Explanation of each buttons
1. [Port Reset]:
2. [Write default]:
3. [All Write]:
4. [Function1]:
5. [Function2]:
6. [Function3]:
7. [Function4]:
8. [Function5]:
9. [SAVE]:
10. [OPEN]:
11. [Write]:
Set up the USB interface board (AKDUSBIF-A).
Initialize the register of AK4340.
Write all registers that is currently displayed.
Dialog to write data by keyboard operation.
Dialog to write data by keyboard operation.
The sequence of register setting can be set and executed.
The sequence that is created on [Function3] can be assigned to buttons and
executed.
The register setting that is created by [SAVE] function on main window can
be assigned to buttons and executed.
Save the current register setting.
Write the saved values to all register.
Dialog to write data by mouse operation.
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.
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