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參數(shù)資料
型號(hào): W9320
廠商: WINBOND ELECTRONICS CORP
元件分類: 編解碼器
英文描述: ADPCM Codec(ADPCM編解碼器)
中文描述: A/MU-LAW, ADPCM CODEC
文件頁數(shù): 17/35頁
文件大小: 444K
代理商: W9320
W9320
Publication Release Date: August 1997
- 17 -
Revision A1
Reserved (b7):
This bit is reserved.
Sidetone[2:0] (b6:b4):
These two bits control the sidetone attenuation. The sidetone attenuation can range from -
to -8.5
dB as shown in Table 8-3.
Transmit Mute (b3):
Setting this bit will mute the transmit path in the
Σ
codec-filter block. A send zero is sent to the DSP
engine for further processing.
Transmit Gain (b2:b0):
These three bits control the transmit gain control as shown in Table 8-4. The gain range can be set in
the 0 to 6.8 dB range in +1 dB steps.
SIDETONE[2] (B6)
0
0
0
0
1
1
1
1
SIDETONE[1] (B5)
0
0
1
1
0
0
1
1
SIDETONE[0] (B4)
0
1
0
1
0
1
0
1
SIDETONE ATTEN. (DB)
-
-21.5
-18.0
-15.0
-13.5
-11.5
-10.5
-8.0
Table 8-3 Sidetone Attenuation
TRANSMIT GAIN[2]
(B2)
0
0
0
0
1
1
1
1
TRANSMIT GAIN[1]
(B1)
0
0
1
1
0
0
1
1
TRANSMIT GAIN[0]
(B0)
0
1
0
1
0
1
0
1
TRANSMIT GAIN
CONTROL(DB)
0
+1.5
+2
+3
+4
+5
+6
+6.8
Table 8-4 Transmit Gain Control
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