msm7540 Oki Semiconductor, msm7540 Datasheet - Page 13

• Manufacturer Part Number: msm7540
• Description: Single Rail Adpcm Codec
• Manufacturer: Oki Semiconductor

(during linear)
(during linear)
¡ Semiconductor
TIMING DIAGRAM
Transmit Side PCM/ADPCM Data Interface
Receive Side PCM/ADPCM Data Interface
Note: Linear format
PCMRO
PCMRO
RSYNC
RSYNC
PCMSO
PCMSO
BCLKA
BCLKB
XSYNC
XSYNC
BCLKB
BCLKA
IR
IS
A code of an input/output level is determined by the 14-bit 2'compliment.
Refer to the table below for code format.
txs
txs
trs
trs
0
0
0
0
tsdx
tsdx
tsdx
MSB
txd1
txd1
tsr
tsr
tsx
tsx
1
1
1
1
trd1
tds
MSB
MSB
MSB
MSB
MSB
txd2
txd2
2
2
2
tws
2
tws
trd2
tdh
3
3
3
3
Input/Output level
4
LSB
4
4
4
+Full-scall
–Full-scall
LSB
0
5
5
5
5
txd3
6
6
6
6
7
7
7
7
01111111111111
00000000000000
10000000000000
MSB to LSB
8
8
8
8
txd3
txd3
txd3
LSB
LSB
9
9
9
9
10
10
10
10
11
11
12
12
MSM7540/7560
13
13
FEDL7540-03
14
14
trd3
txd3
LSB
LSB
13/16