AKD4440-A Datasheet, PDF (2/29 Pages) Asahi Kasei Microsystems – AK4440 Evaluation Board Rev.3

[AKD4440-A]
„ Operation sequence
1) Set up the power supply lines.
[VDD] (Red) = 4.5 ∼ 5.5V (typ. 5.0V, for AK4440)
[VCC] (Red) = 2.7 ∼ 3.6V (typ. 3.3V, for AK4118, for 74LVC541 and for logic)
[AVDD] (Red) = 4.5 ∼ 5.5V (typ. 5.0V, AK4440)
[AVSS1] (Black) = 0V
[AVSS2] (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 AK4118 is used, The AK4118 should be reset once by bringing SW2 “L” upon power-up.
„ Evaluation mode
1) D/A part evaluation using optical or S/PDIF input <Default>
Use PORT1 (RX3: OPT) or J2 (RX3: BNC).
The AK4118 (DIR) generates MCLK, BICK, LRCK and SDTI 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 JP8 (RX1)
JP4
JP5
JP6
JP7
JP8
MCLK
BICK
SDTI1
LRCK
RX1
DIR EXT DIR EXT
DIR EXT OPT BNC
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 AK4440, 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 SDTI are sent from the A/D converter evaluation
board to the AKD4440 through PORT3 (DSP) via 10-line flat cable.
JP4
MCLK
JP5
BICK
JP6
SDTI1
JP7
LRCK
DIR EXT DIR EXT
DIR EXT
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, SDTI) that is needed for
the AK4440 from external equipments, set up as following.
JP4
MCLK
JP5
BICK
JP6
SDTI1
JP7
LRCK
DIR EXT DIR EXT
DIR EXT
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