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AsahiKASEI AKM AKD4492-SB-TypeS Manual

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AKD4492-SB-TypeS is the best evaluation board for audio solution to need high quality sound and area
saving, such as Hi-Fi audio solution for smartphone, high end portable audio equipment and USB-DAC.
The AKD4492-SB-TypeS is equipped with 32 bit DAC AK4492, audio-only PLL AK8157A and LPF
visceral headphone amplifer AK4205. Therefore the board is possible to drive headphone with ultra low
distortion and ultra low noise. Moreover AK1110, 5V LDO designated for the DAC, can realize good
characteristics and high quality sound. The AKD4492-SB-TypeS has digital audio interfaces. They can
interface to digital audio systems via optical or coaxial connector.

■ Ordering Guide

AKD4492-SB-TypeS -- Evaluation board composed of AK4492, AK4205, AK8157A and AK1110.
（Control software and Power supply cable includes in this package.）
 SPDIF is accepted by Digital Audio Interface (AK4118A).
 I2S data and DSD data is inputted directly through the 10-pins header for the external
digital input interface.
 AK4492-SB has AK8157A(PLL for audio) for application processor of smartphone.
 Easy control is possible because of the PIC micro controller for the device control on
the board.
 Only single power supply +3.7V can operate AKD4492-SB-TypeS because of LDO and
DCDC on the board.
LDO (U300)
COAX-IN (J400)
OPT-IN
(PORT401)
Audio-IF
(PORT400)
9.6MHz IN (J300)
Generator
AK8157A
SPXO[NM]
(X300)
from LDO(U100)
+1.8V
LDO (U502)
+3.3V
USB
PIC18F4550
(PORT500)
(U500)
Figure 1. AKD4492-SB-TypeS Block Diagram(AK8157A isn't used, SPDIF inputs)
< KM125000>

1. General Description

LDO (U100)
to AK8157A
+3.3V
to AVDD,DVDD
and TVDD
DIR
AK4118A
(U401)
Audio data
(I2S)
Audio
clock
Clock
(U1)
Serial Control
AKD4492-SB-TypeS
AK4492 Evaluation Board Rev.2

2. Function

+1.8V
LDO
LDO
AP1110
AP1110
(U102) +5V
(U101) +5V
to VREFHR,
to VREFHL,
VDDR
VDDL
Rch
DAC
AK4492
(U2)
Lch
1
[AKD4492-SB-TypeS]
Battery (J100)
+3.7V
DC-DC (U200)
LDO (U304)
+6V
-5V
+3.3V
to PVEEL/R
to PVDDL/R
and RVDD
to SWVDD
HP-amp
HP OUT
AK4205
(U3)
CODEC IN
(J301)
(J1)
2016/11

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Summary of Contents for AsahiKASEI AKM AKD4492-SB-TypeS

  • Page 1: General Description

    [AKD4492-SB-TypeS] AKD4492-SB-TypeS AK4492 Evaluation Board Rev.2 1. General Description AKD4492-SB-TypeS is the best evaluation board for audio solution to need high quality sound and area saving, such as Hi-Fi audio solution for smartphone, high end portable audio equipment and USB-DAC. The AKD4492-SB-TypeS is equipped with 32 bit DAC AK4492, audio-only PLL AK8157A and LPF visceral headphone amplifer AK4205.
  • Page 2 [AKD4492-SB-TypeS] Battery (J100) +3.7V LDO (U300) LDO (U100) DC-DC (U200) LDO (U304) to AK8157A +3.3V +1.8V +3.3V to AVDD,DVDD COAX-IN (J400) and TVDD to PVEEL/R AP1110 AP1110 to PVDDL/R AK4118A (U102) +5V (U101) +5V and RVDD (U401) Audio data OPT-IN to VREFHR, to VREFHL, to SWVDD...

  • Page 3: Table Of Contents

    [AKD4492-SB-TypeS] 3. Table of Contents 1. General Description ..................................1 ■ Ordering Guide .................................... 1 2. Function ......................................1 3. Table of Contents.................................... 3 4. Evaluation Board .................................... 4 ■ Board Diagram .................................... 4 ■ Component explanation ................................4 AK4118A (U401) ................................4 AK8157A(U1) ..................................

  • Page 4: Evaluation Board

    [AKD4492-SB-TypeS] 4. Evaluation Board ■ Board Diagram Figure 4. AKD4492-SB-TypeS Board View ■ Component explanation (1) AK4118A (U401) AK4118A is Digital Audio I/F Transceiver. When evaluating the sound quality, using AK4118A with SPDIF signal. (2) AK8157A(U1) AK8157A is Audio Clock Generator. When 9.6MHz clock inputs for application processor of smartphone, the device supplies MCLK, BICK and LRCK for PCM.

  • Page 5: Ak1110(U101, U102)

    [AKD4492-SB-TypeS] (5) AK1110(U101, U102) AK1110 is LDO of two outputs and low noise and high PSRR. It is used for an analog power supply of AK4492, it contributes to an electrical characteristic and the sound quality greatly. (6) LDO, DC-DC (U100, U200, U300, U302, U304, U502) This is the power supply IC for the AKD4492-SB-TypeS.

  • Page 6: Pin Header For External Digital Input Output (Port400 / 2.54Mm Pitch 10 Pin Header)

    [AKD4492-SB-TypeS] (11) 10 pin header for external digital input output (PORT400 / 2.54mm pitch 10 pin header) PORT400 is external digital input output port. When evaluated by using PCM signal input or DSD signal input, using of port400. Table 4. Pin assignment of PORT400 Function Function MCLK...

  • Page 7: Function Setting Switch (Sw304, Sw400)

    [AKD4492-SB-TypeS] (15) Function setting switch (SW304, SW400) It is the switch to evaluate AK4118A and the function of AK4205. SW304 controls the mute function of AK4205 output and switching the path if analog switch in AK4205. SW400 selects the Master clock for AK118A when using SPDIF input. [SW304]：AK4205 setting Table 6.

  • Page 8: Operation Sequence

    [AKD4492-SB-TypeS] 5. OPERATION SEQUENCE ■ OPERATION SEQUENCE 1). Wiring of the board 2). Evaluation mode 3). Power supply 4). USB I/F (Serial control) 1). Wiring if the board  Power wiring A power supply connects a power supply cable to J100 connector and supplies it. A connector which corresponds to a PH connector of JST (B2B-PH-K-S or S2B-PH-K-S) can connect J100.

  • Page 9: Evaluation Mode

    [AKD4492-SB-TypeS] Evaluation mode There is an input method of 3 kinds of digital signal in this board. A) Evaluation using the SPDI signal input. <Default> Figure 5. The connection diagram when evaluated by using SPDIF signal input. When evaluated by using SPDIF signal input, the input must be set to J400 or PORT401. JP400 JP400 COAX...
  • Page 10 [AKD4492-SB-TypeS] B) Evaluation using the external clock (PCM or DSD). Figure 7. The connection diagram when evaluated by using PORT400. External clock (PCM or DSD) supply from PORT400. Table 12. Pin assignment of PORT400 Function Function MCLK BICK/DCLK LRCK/DSDR SDATA/DSDL When evaluated by using external clock input, AK4118A does not use.
  • Page 11 [AKD4492-SB-TypeS] C) Evaluation using the AK815A. Figure 8. The connection diagram when evaluated by using PORT400. When evaluated by using the AK8157A, the AK8157A must supply external clock(9.6MHz) from J300. BICK and LRCK are output from AK8157A. SDATA inputs must be synchronized with BICK and LRCK. Table 14.

  • Page 12: Power Supply

    [AKD4492-SB-TypeS] 3). Power supply Before supplying a power supply, SW300, SW301, SW302 and SW303 are setting to OFF(“L”). Please supply a power supply at first. SW is setting by the next step. 1st: SW301 is setting to ON(“H”). 2nd: SW303 is setting to ON(“H”). 3rd: SW302 is setting to ON(“H”).

  • Page 13: Control Software Manual

    [AKD4492-SB-TypeS] 6. CONTROL SOFTWARE MANUAL ■ Setup of the Evaluation Board and Control Software 1. Set an AKD4492-SB-TypeS properly. 2. Connect AKD4492-SB-TypeS to PC with USB cable. 3. USB control recognized HID (Human Interface Device) on the PC. When it can’t be recognized correctly, connect AKD4492-SB-TypeS to PC with USB cable. 4.

  • Page 14: Operation Overviews

    [AKD4492-SB-TypeS] ■ Operation Overviews Function and Register map are controlled by this control software. These controls may be selected by the upper tabs. Frequently used Buttons, such as the register initializing button “Write Default”, are located outside of the switching tab window.

  • Page 15: Tab Functions

    [AKD4492-SB-TypeS] ■ Tab Functions 1. [Function] Tab: Function Control Figure 10. [Function] Window ◆ Sound control setting of AK4492 For more information refer to the datasheet of the AK4492. (1) Audio Interface Format selected by combo box. ・ 16-bit LSB justified ・...
  • Page 16 [AKD4492-SB-TypeS] (3) The sound quality can be selected by changing radio buttons of the following digital filters setting. For more information about the digital filter characteristics, refer to the datasheet of the AK4492. ・ Sharp roll-off filter ・ Slow roll-off filter ・...

  • Page 17: Other Setting

    [AKD4492-SB-TypeS] (7) The VBST, VP and VN output are recommended setting when “Recommended” button is clicked. (VBST Output = 6.3V, VP Output = 6.0V, VN Output = -5.0V) “Recommedned ” button is clicked. Figure 12. The VBST, VP and VN output are recommended setting ◆...

  • Page 18: Ak4492], [Ak8157A], [Isl98608Iih] Tab: Register Map

    [AKD4492-SB-TypeS] 2. [AK4492], [AK8157A], [ISL98608IIH] Tab: Register Map This tab is for register read and write. Each bit on the register map is a push-button switch. The register is updated by mouse operation. Button Down indicates “1” and the bit name is shown in red (when read-only the name is shown in dark red). Button Up indicates “0”...
  • Page 19 [AKD4492-SB-TypeS] 2.1 [Write]: Data Wirte Dialog Box Select the [Write] button located on the right of the each corresponding address when changing two or more bits on the same address simultaneously. Click the [Write] button for the register pop-up dialog box shown below. When the checkbox is checked(“”...

  • Page 20: Register Setting Of Ak4492, Ak8157A And Isl98608Iih

    [AKD4492-SB-TypeS] ■ Register setting of AK4492, AK8157A and ISL98608IIH Figure 16. Script Window of Control Soft Push the “Load” button and select the program file (file name is “For checking sound quality.akr”) . When program file is selected, it’s executed automatically. Figure 17.

  • Page 21: Dialog Boxes

    [AKD4492-SB-TypeS] ■ Dialog Boxes 1. [Save]: [Save Address of Register] Dialog Box Click the [Save] button in the main window for save address setting dialog box. Figure 18. [Save] Window [All Address] check box : When the [All Address] checkbox is checked, all register settings will be saved. [Start Address] edit box : When the [All Address] check box is not checked, set starts register address to save.

  • Page 22: All Reg Write]: [All Register Write] Dialog Box

    [AKD4492-SB-TypeS] 2. [All Reg Write]: [All Register Write] Dialog Box Click the [All Reg Write] button in the main window to open register setting file window show below. Register setting files saved by the [Save] button may be applied. Figure 19. All Reg Write Window [Open (left)] button : Selects a register setting file (*.akr).

  • Page 23: Sequence]: [Sequence] Dialog Box

    [AKD4492-SB-TypeS] 3. [Sequence]: [Sequence] Dialog Box Click the [Sequence] button to open register sequence setting dialog box shown below. Register sequence can be set in this dialog box. Figure 20. Sequence Window ~ Sequence Setting ~ Set register sequence according to the following process. 1.

  • Page 24: Control Buttons

    [AKD4492-SB-TypeS] Input sequence [Address] : Data address [Data] : Write data [Mask] : Mask This value “ANDed” with the write data becomes the input data. The bits which corresponding Mask bit = “0” are not changed. At this time, data read is not executed, and the storage data of this software is used. “Write Default”...

  • Page 25: Sequence(File)]:[Sequence(File)] Dialog Box

    [AKD4492-SB-TypeS] 4. [Sequence(File)]:[Sequence(File)] Dialog Box Click the [Sequence(File)] button to open sequence setting file dialog box shown below. Files saved in the “Sequence setting dialog” can be applied in this dialog. Figure 21. Sequence(File) Window [Open (left)] button : Opens a sequence setting file (*.aks). [Start] button : Executes the sequence by the setting of selected file.

  • Page 26: Revision History

    [AKD4492-SB-TypeS] 7. REVISION HISTORY Date Manual Board Reason Page Contents (yy/mm/dd) Revision Revision 16/11/09 KM125000 First edition < KM125000> 2016/11...

  • Page 27: Important Notice

    [AKD4492-SB-TypeS] IMPORTANT NOTICE 0. Asahi Kasei Microdevices Corporation (“AKM”) reserves the right to make changes to the information contained in this document without notice. When you consider any use or application of AKM product stipulated in this document (“Product”), please make inquiries the sales office of AKM or authorized distributors as to current status of the Products.
  • Page 28 32bit DAC HP-Amp and Analog Switch PLL for Audio Clock Test Land TESTE PVEER HPGND PVDDR 10u(TA) HPGND R1 (open) (open) 10u(TA) 0.1u 0.1u 10u(TA) 2.2u 2.2u 4.7u C602 C603 VSS-8157 VREFLR TVDD VDD3 VSS2 (open) (open) RSTN PDN-DAC AK8157A LRCK (open) TVDD...
  • Page 29 1.8 V for Hi-Fi Digital TVDD To AK8157A VBAT J100 S2B-PH-K-S To AK4492 DVDD +3.7V U100 C101 To AK4492 AVDD C100 C622 Power 2.2n C102 C103 10u(TA) (open) PDN-Power1 C104 LP5907UVE-1.8/NOPB DVSS 5.0V for Hi-Fi Analog of Lch 5.0V for Hi-Fi Analog of Rch VREFLR To AK4492 VREFLL...
  • Page 30 6.0V and -5.0V DCDC for Hi-Fi HP-Amp PDN-Power2 CL200 PVEEL (short) C200 C201 C202 1000p PVEER C203 PGND PGNDCP CL201 PVDDL U200 (short) ISL98608IIH C204 C205 PDN-Power2 1000p C206 PVDDR VBAT AGND CL202 L200 PGND RVDD 2.2u C207 C618 (short) C208 CL203 5.1ohm...
  • Page 31 D3VDD D18VDD U300 VBAT C301 C300 D3VDD VOUT R300 U301 0.1u R301 22u(TA) D300 TC74HC14AF D301 C302 C303 C304 HSU119 HSU119 0.1u (open) R302 0 PDN-DIR 22u(TA) C305 LP5907MFX-3.3 D3VSS C306 C307 C308 C309 SW 300 0.1u (open) SW 301 0.1u (open) PDN-DIR...
  • Page 32 Non-Hi-Fi Other Circuit (DIR) SW400 R403 0 A6E-2104-N D3VDD C400 R404 1000p PDN-DIR D3VSS CL402 R410 C516 C517 R402 LRCK 0.1u 0.1u (short) C401 U400 CL400 R405 SDATA ADG3308 (short) CL403 R406 BICK (short) INT1 LRCK CL401 R407 MCLK AVDD MCKO1 (short) R408...
  • Page 33 Non-Hi-Fi Other Circuit (PIC) C502 C500 C501 22u(TA) X500 C503 R500 20MHz 0.1u R501 R505 NC/ICPORTS RA3/AN3/Vref+ R506 U501 PCA9306DP1 R507 RC1/T1OSI/CCP2/UOE_N RA2/AN2/Vref-/CVref SDA2 SDA1 R508 SCL2 SCL1 RC2/CCP1/P1A RA1/AN1 R509 U502 C504 VREF2 VREF1 D18VDD 0.47u C505 C506 VOUT VUSB RA0/AN0 0.01u...

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