[AKD4344-A]
<KM087902>
2007/07
- 2 -
Operation sequence
1) Set up the power supply lines.
[VDD]
(Red) =
2.7
∼
3.6V (typ. 3.3V, for AK4344)
[VCC] (Red) =
2.7
∼
3.6V (typ. 3.3V, for AK4112B, for 74LVC541 and for logic)
[AGND] (Black)
=
0V
[DGND] (Black)
=
0V
Each supply line should be distributed from the power supply unit.
2) Set-up the evaluation modes, jumper pins and DIP switches
(See the followings.)
3) Power on.
When AK4112B is used, The AK4112B and AK4344 should be reset once by bringing SW2 and SW1 “L”
upon power-up.
When AK4112B is not used, keep SW2 to “L”, and the AK4344 should be reset once by bringing SW1 “L”
upon power-up.
Evaluation mode
1) D/A part evaluation using optical or S/PDIF input <Default>
Use PORT1 (RX1: OPT) or J2 (RX1: BNC).
The AK4112B (DIR) generates MCLK, BICK, LRCK and SDTI1 from the received data through Optical
connector (TORX141) or BNC connector. This evaluation mode should be used for the evaluation using CD test
disk. Nothing should be connected to PORT3 (DSP). The selection of OPT and BNC should be done by JP14
(RX1)
JP7
LRCK
JP4
MCLK
JP12
EXT
DIR
EXT
DIR
EXT
JP5
BICK
DIR
EXT
JP6
SDTI1
2) D/A part evaluation using 10-pin connector on the AKM’s A/D evaluation board
Use PORT3 (DSP).
It is able to evaluate the AK4344, connecting the 10-pin connector on the AKM’s A/D evaluation board and
PORT3 (DSP) via 10-line flat cable. MCLK, BICK, LRCK and SDTI1 are sent from the A/D converter evaluation
board to the AKD4344 through PORT3 (DSP) via 10-line flat cable.
JP7
LRCK
JP4
MCLK
JP12
EXT
DIR
EXT
DIR
EXT
JP5
BICK
DIR
EXT
JP6
SDTI1
3) D/A part evaluation using PORT3 (DSP), and supplying all interface signals from external equipments
In case of using PORT3 (DSP), and supplying signals (MCLK, BICK, LRCK, SDTI1) that is needed for
the AK4344 from external equipments, set up as
following.
JP7
LRCK
JP4
MCLK
JP12
EXT
DIR
EXT
DIR
EXT
JP5
BICK
DIR
EXT
JP6
SDTI1
In case of using PORT3 (DSP), and supplying SDTI2 from external equipments, setting of SDTI2
should be done by JP8 (SDTI2).
