AKD4642EN Datasheet, PDF (2/35 Pages) Asahi Kasei Microsystems – AK4642EN Evaluation board Rev.0

ASAHI KASEI
[AKD4642EN-B]
1. Evaluation Board Manual
„ 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 AK4642EN and AK4114 via the regulator.
2) Set up the evaluation mode, jumper pins. (See the followings.)
3) Power on.
The AK4642EN and AK4114 should be reset once bringing SW1 “L” upon power-up.
„ 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, LOUT) using DIR of AK4114
(1-3) Evaluation of Loop-back using AK4114 <Default>
(1-4) All interface signals including master clock are fed externally.
The AK4114’s audio interface format is fixed to I²S compatible.
(1-1) Evaluation of Loop-back 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 (TOTX141). Nothing should be connected to PORT1 (DIR) and PORT3
(DSP).
JP6
BICK2
JP7
LRCK2
JP8
LRCK
JP9
MCLK
JP10
BICK
JP11
SDTI
DIR ADC
(1-2) Evaluation of Playback block using DIR of AK4114
PORT1 (DIR) is used. Nothing should be connected to PORT3 (DSP).
JP6
BICK2
JP7
LRCK2
JP8
LRCK
JP9
MCLK
JP10
BICK
JP11
SDTI
DIR ADC
The AK4114 operates at fs of 32kHz or more. If the fs is slower than 32kHz,
any other evaluation mode without using DIR should be used.
<KM079300>
-2-
2005/06