msm7718-01 Oki Semiconductor, msm7718-01 Datasheet - Page 26
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msm7718-01
Manufacturer Part Number
msm7718-01
Description
Echo Canceler With Adpcm Codec
Manufacturer
Oki Semiconductor
Datasheet
1.MSM7718-01.pdf
(38 pages)
- Current page: 26 of 38
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¡ Semiconductor
(4) CR3 (Transmit/receive gain adjustment)
B7, 6, 5, 4 ...... Adjustment of the transmit signal gain [ATTtx]
B3, 2, 1, 0 ...... Adjustment of the receive signal gain [ATTrx]
This table is for gains of transmit/receive voice signals.
B7
CR3
Initial value
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
(see Table 3)
(see Table 3)
B6
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
B5
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
GAIN3
B7
TX
B4
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Table 3 Transmit/Receive Signal Gain Setting
Transmit signal gain
GAIN2
B6
TX
0
–16 dB
–14 dB
–12 dB
–10 dB
+10 dB
+12 dB
+14 dB
–8 dB
–6 dB
–4 dB
–2 dB
+2 dB
+4 dB
+6 dB
+8 dB
0 dB
GAIN1
B5
TX
0
GAIN0
B3
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
B4
TX
0
B2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
GAIN3
B3
RX
0
B1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
GAIN2
B0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
B2
RX
0
Receive signal gain
GAIN1
B1
RX
0
MSM7718-01
–16 dB
–14 dB
–12 dB
–10 dB
+10 dB
+12 dB
+14 dB
–8 dB
–6 dB
–4 dB
–2 dB
+2 dB
+4 dB
+6 dB
+8 dB
0 dB
GAIN0
26/38
B0
RX
0
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