msm7586-01 Oki Semiconductor, msm7586-01 Datasheet - Page 12

• Manufacturer Part Number: msm7586-01
• Description: Shift Qpsk Modem/adpcm Codec
• Manufacturer: Oki Semiconductor

¡ Semiconductor
MSM7586-01/03
(CODEC Unit)
AIN1+, AIN1-, AIN2, GSX1, GSX2
The transmit analog input and the output for transmit gain adjustment.
The pin AIN1–(AIN2) connects to the inverting input of the internal transmit amplifier, and the
pin AIN1+ connects to the non-inverting input of the internal transmit amplifier. The pin GSX1
(GSX2) connects to output of the internal transmit amplifier. See Fig. 6 for gain adjustment.
VFRO, AOUT+, AOUT-, PWI
Used for the receive analog output and the output for receive gain adjustment.
VFRO is an output of the receive filter. AOUT+ and AOUT– are differential analog signal outputs
which can directly drive Z
= 350 W+120 nF or the 1.2 kW load. See Fig. 6 for gain adjustment.
L
However, these outputs are in high impedance state during power down.
SAO, AIN3, AIN4, GSX3, GSX4
Input pins for the internal operational amp.
Refer to Fig. 6 for connection information. However, these output pins are in the high impedance
state during power down.
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