msm7584c Oki Semiconductor, msm7584c Datasheet - Page 4
msm7584c
Manufacturer Part Number
msm7584c
Description
Pi /4 Shift Qpsk Modem/adpcm Codec
Manufacturer
Oki Semiconductor
Datasheet
1.MSM7584C.pdf
(57 pages)
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PIN AND FUNCTIONAL DESCRIPTIONS
(ADPCM CODEC)
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.
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 kW. When the system is in the power down mode, these outputs become
high impedance.
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.
AIN+, AIN–, GSX
VFRO, SAO
AOUT+, AOUT–, PWI
MSM7584C
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