Atmel AT83SND2C MP3 - Manual (Page 51)

Protocol Frame Description
AT83SND2CMP3 User Guide 5-47
7525A–MP3–07/05
AUDIO_PA_LP Set Player power amplifier (PA) Low power mode (for speaker) - Only in PLAY mode.
This command is used to set in a very short time the PA in a low power mode (only in
play mode). A Play/Stop transition will reset the PA low power mode.
Table 5-54 . AUDIO_PA_LP command
Player response is SYSTEM_ACK or SYSTEM_NACK.
CUSTOM_SET_UART_BAUDR
ATE Command
Custom change UART baudrate.
Default UART baudrate is 115200bps (physical baudrate 111111bps).
Table 5-55 . CUSTOM_SET_UART_BAUDRATE Command
Table 5-56 . Parameter Value / Baudrate
Player response is:
„
SYSTEM_ACK* frame at previous baudrate,
followed by:
„
SYSTEM_ACK* frame at new baudrate.
It is advised to send the SYSTEM_GET_STATUS after the baudrate change to confirm
the change.
CUSTOM_GET_SYS_VERSIO
N Command
Get Player AT83SND2CMP3 version “V2.0.0”.
Frame Start Channel
Protocol
Command Data Length Data CheckSum
7Eh
If not used,
FFh
92h 01h
Byte 0:
- 00h exit PA low power mode
- 01h enter PA low power mode
Yes
Frame
Start Channel
Protocol
Command Data Length Data CheckSum
7Eh
If not used,
FFh
93h 03h
Byte 0: SCON_REG
Byte 1: SMOD_SPD_REG
Byte 2: BRG0_REG
Yes
Baudrate SCON_REG Value SMOD_SPD Value BRG0_VALUE
38400 bps 40h 03h F3h
11500 bps 40h 02h F7h