¡ Semiconductor
MSM7708-02
TIMING DIAGRAM
Transmit Side PCM, ADPCM Timing
BCLK
0
1
2
3
4
5
6
7
8
9
10
tXS
tSX
tWS
XSYNC
tXD1
tXD2
tXD3
PCMSO
MSB
LSB
tSDX
BCLK
0
1
2
3
4
5
6
7
8
9
10
tXS
tSX
XSYNC
tXD1
tXD2
tXD3
IS
MSB
LSB
tSDX
Receive Side PCM, ADPCM Timing
BCLK
0
1
tRS
tSR
2
3
4
5
tWS
6
7
8
9
10
RSYNC
tDS tDH
tXD3
IR
MSB
LSB
BCLK
RSYNC
PCMRO
0
tRS
tSDX
1
2
3
4
5
6
7
tSR
tRD1
tRD2
MSB
Figure 4 PCM, ADPCM Interface
8
9
10
tRD3
LSB
Serial Port Timing for Microcontroller Interface
DEN
EXCK
t2
1
2
t3
t1
t4
t5
3
4
5
6
t6
t7
11 12
t9
t12
t10
DIN
DOUT
W/R A3
A2
A1
A0
B7
t8
B7
B1 B0
t11
B1 B0
Figure 5 Serial Control Port Interface
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