參數(shù)資料
型號: MSM7708-02
廠商: OKI SEMICONDUCTOR CO., LTD.
元件分類: Codec
英文描述: Serial Register Interface ADPCM CODEC for Telephone Recording(用于電話記錄的串行寄存器接口ADPCM編碼譯碼器)
中文描述: 串行接口差分PcM注冊解碼器的電話錄音(用于電話記錄的串行寄存器接口差分PcM編碼譯碼器)
文件頁數(shù): 7/38頁
文件大?。?/td> 232K
代理商: MSM7708-02
Semiconductor
MSM7708-02
7/38
SAO
Differential analog output for a sounder.
Variable tones including "Audio sound", "DTMF tone", "S tone", "F tone", and "R tone", and
telephone call signals can be output to either VFRO pin or SAO pin by CR0 - B1 of the control
register. These output pins are in the high impedance state during power down.
Transmit gain : (V
/V
I
)
= (R2/R1)
(R4/R3)
AIN1–
GSX1
R2
C1
to ENCODER
R1
Analog output signal
Vo
Receive gain : (V
O
/V
VFRO
)
= 2
(R6/R5)
Z
= 120 nF
+ 350
W
AIN2
GSX2
R4
C2
R3
AOUT+
R6
AOUT–
AIN1+
–1
+
+
+
C1
R1
R2
Reference
voltage
generator
SGT
from
DECODER
+
Vi
Differential analog input signal
R5
VFRO
Sounder output signal
PWI
SAO
Figure 1 Analog Interface
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