AKD4645A-A Datasheet, PDF (3/53 Pages) Asahi Kasei Microsystems – Evaluation board Rev.1 for AK4645A

ASAHI KASEI
[AKD4645A-A]
„ Operation sequence
1) Set up the power supply lines.
[AVDD] (orange) = 2.6 ∼ 3.6V : for AVDD of AK4645A (typ. 3.3V)
[HVDD] (orange) = 2.6 ∼ 5.25V : for HVDD of AK4645A (typ. 3.3/5.0V)
[DVDD] (orange) = 2.6 ∼ 3.6V : for DVDD of AK4645A (typ. 3.3V:=AVDD±0.3V)
[TVDD] (orange) = 1.6 ∼ 3.6V : for TVDD of AK4645A (typ. 3.3V:≤DVDD)
[LVC_IN] (orange) = 1.6 ∼ 3.6V : for logic (typ. 3.3V:=TVDD)
[VD_IN] (orange) = 2.7 ∼ 3.6V : for AK4114 and logic (typ. 3.3V)
[REG] (red)
= 5.0V
: for regulator (typ. 5.0V)
[AGND] (black)
= 0V
: for analog ground
[DGND] (black)
= 0V
: for logic ground
Each supply line should be distributed from the power supply unit.
2) Set up the evaluation mode, jumper pins and DIP switches. (See the followings.)
3) Power on.
The AK4645A and AK4114 should be reset once bringing SW1 and SW2 “L” upon power-up.
„ Evaluation mode
(1) External Slave Mode
In case of AK4645A evaluation using AK4114, it is necessary to correspond to audio interface format for AK4645A
and AK4114. About AK4645A’s audio interface format, refer to datasheet of AK4645A. About AK4114’s audio
interface format, refer to Table 1 in this manual.
(1-1) Evaluation of Recording block (MIC, ADC) using DIT of AK4114 <default>
(1-2) Evaluation of Playback block (HP, LINEOUT) using DIR of AK4114
(1-3) Evaluation of Loop-back using AK4114
(1-4) All interface signals including master clock are fed externally.
(1-1) Evaluation of Recording block (MIC, ADC) using DIT of AK4114 <default>
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)
and J11 (EXT). The jumper pins should be set to the following.
JP name
JP25(EXT)
JP26(4114_MCKI_IN)
JP27(4114BICK_SEL)
JP28(4114LRCK_SEL)
State
Short
Open
Open
Open
JP name
JP32(BICK_SEL)
JP33(LRCK_SEL)
JP35(LRCK_MODE)
JP36(BICK_MODE)
State
Short
Short
Open
Open
JP24
MCLK
DIR
EXT
JP21
BICK
JP29
LRCK
JP30
SDTI
JP19
PHASE
JP20
PHASE
DIR 4040 DIR 4040 DIR 4040 THR INV THR INV
When AK4114 is used, JP22 (MKFS) and JP23 (BCFS) are not used. Therefore, JP22 (MKFS) should be set to
“x1” and JP23 (BCFS) should be set to “64fs”.
* The AK4114 operates at fs of 32kHz or more. If the fs is slower than 32kHz, this evaluation mode can’t be used.
< KM094901>
-3-
2009/10