AKD5354 Datasheet, PDF (3/18 Pages) Asahi Kasei Microsystems – EVALUATION BOARD REV.A FOR AK5354

ASAHI KASEI
[AKD5354]
n Operation sequence
1) Set up the power supply lines.
[VA] (orange) = 2.2 ∼ 3.3V : for VA of AK5354 (typ. 2.5V)
[D2V] (orange) = 1.8 ∼ 3.3V : for D2V of 74LVC541 (typ. 2.5V)
[VCC] (red)
= 3.6 ∼ 5.0V : for logic
[AGND] (black)
= 0V
: for analog ground (including VSS of AK5354)
[DGND] (black)
= 0V
: for logic ground
Each supply line should be distributed from the power supply unit.
D2V and VA must be same voltage level.
2) Set up the evaluation mode, jumper pins and DIP switches. (See the followings.)
Note : Evaluation mode of the AK5354 is fixed to I²S compatible on the board.
3) Power on.
The AK5354 and AK4353 should be reset once bringing SW1 = SW2 = “L” upon power-up.
n Evaluation mode
Applicable Evaluation Mode
(1) Evaluation of A/D using DIT (Optical Link)
(2) Evaluation of A/D using D/A converted data
(3) All interface signals including master clock are fed externally.
(1) Evaluation of A/D using DIT (Optical Link)
PORT1 (DIT) is used. DIT generates audio bi-phase signal from received data and which is output through
optical connector (TOTX176). It is possible to connect AKM’s D/A converter evaluation boards on the digital-
amplifier which equips DIR input. Nothing should be connected to PORT3 (ROM). In case of using external
clock through a BNC connector (J3), select EXT on JP6 (CLK) and short JP5 (XTE) and open JP7 (EXT).
JP5
JP6
JP7
XTE
CLK
EXT
XTL EXT
(2) Evaluation of A/D using D/A converted data
It is possible to make evaluation in the form of analog inputs and analog outputs by interfacing with various
AKM’s D/A evaluation boards with PORT3 (ROM).
JP5
JP6
JP7
XTE
CLK
EXT
XTL EXT
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