Atmel AT89C51SND1C, Руководство пользователя

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Operating Description
Firmware Package User Guide 3-15
4209A–MP3–12/02
3.5.8 Song Erasing In order to free-up memory for message recording, an erase function has been imple-
mented. Pressing the “Erase” key, for more than 3 seconds, erases the currently
selected song.
3.6 Voice Operating
Mode
This mode is used to store voice messages.
Figure 3-5. Display in Voice Operating Mode
3.6.1 File Format Files created are compatible with windows
™
pcm wav files and can be played using any
media player. File format is mono 8 Khz 8-bit leading to 64 Kbits/s, thus 8 Kbytes of
memory per second.
3.6.2 Keypad Functions Table 5 details the functionality of each key depending on the current state.
Table 5. Voice Mode Key Function
Repeat A/B
B marker is set, repeat playing from A to B.
Icon Description
2 0:00
VOICEOO1.WAV
Lock Status
Message Name
Playing Volume Voice
Player/Recorder State
Icon
Memory
Icon Level Time
Key Description
Next Message
Select next voice message in memory.
Previous Message
Select previous voice message in memory.
Play (stop state)
Start playing of selected voice message.
Pause (play state)
Suspend playing of voice message.
Pause (record state)
Suspend recording of song message.
Stop (play state)
Stop playing of voice message.
Stop (record state)
Stop recording of voice message.
Mode (stop state)
Exit the voice operating mode and go to the tool operating mode.
Increase Control
Increase volume.
Decrease Control
Decrease volume.
M O D E