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Communication Protocol
3-18 AT83SND2CMP3 User Guide
7525A–MP3–07/05
Example 2 Figure 3-5 . Example: Play a MP3 file
Controller Player
S
Y
S
T
E
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_
G
E
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_
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A
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U
S
Play MP3 on MMC/
SD Card
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E
M
_
A
C
K
+
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A
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U
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Y
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L
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M
E
M
O
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(
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A
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D
)
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+
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=
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&
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+
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=
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e
m
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O
K
&
&
P
l
a
y
i
n
g
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R
_
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O
P
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Y
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K
+
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=
M
e
m
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r
y
O
K
&
&
N
o
t
P
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a
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i
n
g
Card Insertion
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Y
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_
G
E
T
_
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U
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+
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=
M
e
m
o
r
y
E
r
r
o
r
Card removed
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Y
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E
M
_
M
O
U
N
T
E
D
FAT is Installed on
Card