參數(shù)資料
型號: MSM7584C
廠商: OKI SEMICONDUCTOR CO., LTD.
英文描述: π/4 Shift QPSK MODEM(π/4移動QPSK調(diào)制解調(diào)器/ADPCM編碼譯碼器)
中文描述: π/ 4移位的QPSK調(diào)制解調(diào)器(π/ 4移動的QPSK調(diào)制解調(diào)器/差分PcM編碼譯碼器)
文件頁數(shù): 4/57頁
文件大?。?/td> 321K
代理商: MSM7584C
Semiconductor
MSM7584C
4/57
PIN AND FUNCTIONAL DESCRIPTIONS
(
ADPCM CODEC
)
AIN+, AIN–, GSX
Transmit analog inputs and transmit level adjustment pin.
The AIN– input is connected to the inverting input of the internal transmit amplifier and AIN+
input is connected to the non-inverting input. The GSX pin is connected to the output pin of the
amplifier.
See Figure 1 for level adjustment.
VFRO, SAO
Receive analog output and sounder output.
VFRO is a receive filter output pin and SAO is a sounder output pin. These outputs can directly
drive the load of over 10 k
W
. When the system is in the power down mode, these outputs become
high impedance.
AOUT+, AOUT–, PWI
Input and outputs for internal operation amplifier.
See Figure 1 for connection. When the system is in the power down mode, these outputs become
high impedance. The AOUT– and AOUT+ outputs can directly drive the load of over 150
W
.
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