msm7708-02 Oki Semiconductor, msm7708-02 Datasheet - Page 6

• Manufacturer Part Number: msm7708-02
• Description: Serial Register Interface Adpcm Codec For Telephone Recording
• Manufacturer: Oki Semiconductor

¡ Semiconductor
MSM7708-02
PIN AND FUNCTIONAL DESCRIPTIONS
AIN1+, AIN1-, AIN2, GSX1, GSX2
The transmit analog input and the output for transmit gain adjustment.
The pin AIN1– (AIN2) connects to inverting input of the internal transmit amplifier, and the pin
AIN1+ connects to non-inverting input of the internal transmit amplifier. The pin GSX1 (GSX2)
connects to output of the internal transmit amplifier. Gain adjustment should be referred to
Fig. 1.
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
= 350 W+120 nF or the 1.2 kW load. Gain adjustment should be
which can directly drive Z
L
referred to Fig. 1.
These outputs are in high impedance state during power down.
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