AKD4645-B Datasheet, PDF (2/40 Pages) Asahi Kasei Microsystems – Stereo CODEC with built-in MIC/HP amplifier

ASAHI KASEI
[AKD4645-B]
Evaluation Board Manual
„ Operation sequence
1) Install the control software (Refer to page 9).
2) Set up the power supply lines.
[VCC] (red) = 5.0V (or 3.3V)
[TVDD] (orange) = 1.6 ∼ 3.6V : for TVDD of AK4645 (typ. 3.3V:≤DVDD)
[AGND] (black) = 0V
[DGND] (black) = 0V
Each supply line should be distributed from the power supply unit.
When the power is supplied to the AK4645 via the regulator, JP2 should be set to “REG” side and VCC should
be 5.0V.<default> (When the power is supplied from VCC jack to the AK4645 directly, JP2 should be set to
“VCC” side and VCC should be 3.3V.)
3) Set up the evaluation mode, jumper pins. (See the followings.)
4) Power on.
The AK4645 and AK4114 should be reset once bringing SW2 “L” upon power-up.
And the AK7830 should be reset once bringing SW1 (SPK_PDN) “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, LINEOUT) 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 LJ compatible.
(1-1) Evaluation of Recording block 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).
JP11
JP13
JP14
DIR-MCLK DIR-BICK DIR-LRCK
JP16
DIR-SEL
JP19
SDTI
Master Slave DIR ADC
(1-2) Evaluation of Playback block using DIR of AK4114
PORT1 (DIR) is used. Nothing should be connected to PORT3 (DSP).
JP11
JP13
JP14
DIR-MCLK DIR-BICK DIR-LRCK
JP16
DIR-SEL
JP19
SDTI
<KM084500>
Master Slave 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.
-2-
2006/07