Communication Protocol

3.4Player’s Operating Modes

All the commands sent by the Remote Controller can change the Player’s current operating mode.

Figure 3-2.Player’s Operating Modes

Power on

Reset

BOOT

Status

Not Playing

FileNameAvailable

Initialization

MemoryError

 

 

SYSTEM_SELECT

INIT

 

 

_MEMORY

 

 

IDLE

Status

 

 

 

=> Memory Error

 

 

 

or FileNameAvailable means

 

 

 

that INIT is finished.

 

 

SYSTEM_

 

 

Status

USB_CONNECT

PLAYER_PLAY

 

USB Connection

SYSTEM_USB

 

PLAYER_STOP

 

USB Transfer

 

 

_DISCONNECT

 

 

 

 

 

Status

 

MASS

PLAYER

Playing

 

 

FileNameAvailable

 

STORAGE

 

 

SYSTEM_USB

_CONNECT

PLAYER_STOP

PLAYER_PREVIOUS

PLAYER_X

FS_GET_NAME

Limitations: During Mass Storage operating mode, if a ring tone occured, it is advised not to play the MP3 and let the user finish the USB mode. Refer to Table 5-12 . SYSTEM_USB_DETACH Command Format

AT83SND2CMP3 User Guide

3-13

7525A–MP3–07/05