Rohm BU94603 User Manual

USB/SD Host Audio Media Decoder Evaluation Board Manual BU94603 25 February, 2013 – Revision A1

USB/SD Host Audio Media Decoder Evaluation Board Manual

BU94603 USB Host Audio Media Decoder IC

7 January 2012, Revision A0

Version

Description

Date

Initials

Updated document to USDC format and for new USDC board build

01/31/2013

KB/JC A1

Appendix C/D added

2/25/2013

A1.1

Software download at distributor

4/16/2013

USB/SD Host Audio Media Decoder Evaluation Board Manual BU94603 25 February, 2013 – Revision A1

Table of Contents

Revision History ............................................................................................................................................ 2

Outline .......................................................................................................................................................... 3

Hardware ...................................................................................................................................................... 3

Software* ...................................................................................................................................................... 3

BU94603 Mode 1 “Stand Alone Mode” Setup Guide ................................................................................... 4

BU94603 Mode 1 Pushbutton Explanation/Operation Guide ...................................................................... 7

BU94603 Mode 2 “Slave Device Mode” Setup Guide ................................................................................... 8

BU94603 Mode 2 “UHAP.exe” Explanation/Operation Guide ................................................................... 12

Appendix A. Connecting to the “USB-to-I2C Cypress Controller Board” .................................................... 16

Appendix B. “UHAP.exe” GUI functions to I2C register command map ..................................................... 17

Appendix C. BU94603 Build of Materials (BoM) ......................................................................................... 20

Appendix D. BU94603 Eval board Schematic Overview ............................................................................. 23

Revision History

USB/SD Host Audio Media Decoder Evaluation Board Manual BU94603 25 February, 2013 – Revision A1

Outline

BU94603 is an AAC/WMA/MP3 decoder IC with built-in USB host Interface, SD memory card interface, audio DAC and system control functions. Using a pushbutton or I2C interface command, the IC reads an audio file written to a memory device within the onboard USB Interface or SD memory card. BU9458KV supports a “STAND ALONE MODE,” which utilizes commands entered from the pushbutton matrix (hereinafter referred to as MODE1), a “AUTO SLAVE MODE,” which is utilizes commands entered from a master microcomputer via the built-in I2C interface (hereinafter referred to as MODE2), and a “MANUAL SLAVE MODE,” which can send the memory device information to the master microcomputer via the I2C interface and completely control sequences (such as a play sequence) by the master microcomputer (hereinafter referred to as MODE3). BU9458KV also supports fast forward playing and fast backward playing with music. BU9458KV can outputs folder names, file names, ID3TAG (V1.0, V1.1 V2.2 V2.3 and V2.4) information and WMA-TAG information and AAC-TAG (iTunes Meta-data) information via the I2C interface. This function is enabled only in MODE 2 and MODE 3. BU9458KV supports audio line output, audio serial three-line (I2S) output and digital audio interface (SPDIF) output.

Hardware

BU94603 Evaluation Board: This board contains the BU94603 IC as well as the external

components required to use the device properly.

USB-to-I2C Cypress Controller Board: This board connects to the PC to emulate an I2C

controlled environment (used for device operation in modes 2 and 3)

Power Adapter: This evaluation board requires a 5V power supply; however, the chip is actually

being supplied with a 3.3V source (regulator).

Software*

“UHAP.exe”: This program is a standalone application (no install required) that emulates a

master I2C controller and demonstrates modes 2 and 3 of the BU94603. Requires Microsoft

framework 2.0

For ROHM software download, please contact your evaluation board distributor.

*These software modules have been tested and verified on a 32bit and 64bit Windows 7 operating

system

SW13

Terminal

Name

Setting

SEL_VOL

OFF (down position)

SEL_DOUT

OFF (down position)

SEL_MP3

OFF (down position)

SEL_SLAVE

OFF (down position)

SW14

Terminal

Name

Setting

Test Terminal

SEL_SMAN

OFF (down position)

SEL_UTPKT

OFF (down position)

SEL_APLAY

OFF (down position)

USB/SD Host Audio Media Decoder Evaluation Board Manual BU94603 25 February, 2013 – Revision A1

BU94603 Mode 1 “Stand Alone Mode” Setup Guide

Mode 1 operation (Stand Alone Mode) uses the evaluation board’s pushbuttons to control the actions of

the BU94603.

1. Set the toggle switches to the following settings

USB/SD Host Audio Media Decoder Evaluation Board Manual BU94603 25 February, 2013 – Revision A1

2. Connect memory containing audio files

a. b. USB memory, SD Card memory, or both can be connected while operating in mode 1.

When both are connected to the BU94603, then files from the USB memory will be

played first.

3. Connect headphones or speakers to the 3.5mm audio jack

4. Connect Power to the Evaluation Board

USB/SD Host Audio Media Decoder Evaluation Board Manual BU94603 25 February, 2013 – Revision A1

Pushbutton

PB Name

Description

SW1

Stop playing current song and play the previous track

SW2

PLAY/PAUSE

Click once to begin playing. Press again to pause. Press again to resume playing (will not reset the track)

SW3

STOP

Once playing, clicking this button will reset the device

SW4

Clicking this button will stop playing the current song and will play the next track

SW5

VOL-

Decrease Volume

SW6

VOL+

Increase Volume

SW7

FOL-

Play previous folder

SW8

FOL+

Play next folder

SW9

+10

Skip forward 10 tracks

SW10

REPEAT

Sets the repeat function. Press once to constantly repeat the current song (blinking LED). Press twice to repeat folder (solid LED)

SW11

RANDOM

Media will be played at random

SW12

DEV CHG

Functional only if both USB and SD memory devices are currently being used. Pressing this button will stop playback and change memory devices. Upon power up, the USB memory will be chosen.

USB/SD Host Audio Media Decoder Evaluation Board Manual BU94603 25 February, 2013 – Revision A1

BU94603 Mode 1 Pushbutton Explanation/Operation Guide

Once power has been connected to the device, using the pushbuttons will allow for different functions.

Please see the picture and table below for additional information on the operations of the different

push buttons.

SW13

Terminal

Name

Setting

SEL_VOL

OFF (down position)

SEL_DOUT

OFF (down position)

SEL_MP3

OFF (down position)

SEL_SLAVE

ON (up position)

SW14

Terminal

Name

Setting

Test Terminal

SEL_SMAN

OFF (down position)

SEL_UTPKT

OFF (down position)

SEL_APLAY

OFF (down position)

USB/SD Host Audio Media Decoder Evaluation Board Manual BU94603 25 February, 2013 – Revision A1

BU94603 Mode 2 “Slave Device Mode” Setup Guide

Mode 2 operation (Slave Device Mode) uses the I2C interface control the actions of the BU94603. I2C

commands are sent from the host PC application, “UHAP.exe” through a Cypress USB peripheral

controller.

1. Set the toggle switches to the following settings

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Rohm BU94603 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual