msm7584c Oki Semiconductor, msm7584c Datasheet - Page 5

• Manufacturer Part Number: msm7584c
• Description: Pi /4 Shift Qpsk Modem/adpcm Codec
• Manufacturer: Oki Semiconductor

¡ Semiconductor
Differential analog input signal
Transmit gain : (V
= R2/R1
Receive side
output signal
Sounder output
signal gain
= R4/R3
Vi
GSX2
/Vi)
C1
C1
Sounder output signal
R1
R1
Figure 1 Analog Interface
R2
R3
R4
R2
AIN–
AIN+
GSX
SGCT
SGCR
PWI
AOUT–
AOUT+
VFRO
SAO
–
+
+1
–1
–1
–
+
150 W driving amplifier
Reference
generator
to ENCODER
voltage
SELECT
MSM7584C
from
DECODER
5/57