msm7532 Oki Semiconductor, msm7532 Datasheet - Page 7

• Manufacturer Part Number: msm7532
• Description: Single Chip Msk Modem With Compandor For Cordless Telephone
• Manufacturer: Oki Semiconductor

¡ Semiconductor
CC3P, CC3N
Pins used to connect a capacitor for defining a time constant of output transient response for the
compressor.
Insert a 0.22 mF capacitor between CC3N and CC3P.
CC2, CC1
Pins used to connect capacitors for removing DC offset in the compressor.
Insert a 0.22 mF capacitor between CC2 and SGO, and between CC1 and SGO.
V
Output pin for internal reference voltage source.
The V
The voltages into which the voltage between V
be supplied to the LIML, MODL, and CPDL pin, respectively.
The V
MODL
DC voltage input pin used to define a transmit output level for MODEM.
One of the voltages into which the voltage between V
should be supplied to this pin.
Refer to the V
If the potential difference between this pin and the SGO pin is V
expressed as follows.
GND
Ground pin (0V).
LIML
Clamp voltage input pin for deviation limiter.
The voice signal maximum RF modulation can be controlled by supplying, to this pin, one of the
voltages into which the voltage between V
Refer to the V
If the potential difference between this pin and the SGO pin is V
as follows.
REF
REF
REF
output voltage is V
pin can be directly connected to the LIML pin, MODL pin, or CPDL pin.
REF
REF
description for voltage division by the resistors.
description for voltage division by the resistors.
Compressor
Expander
V
V
SG
Limiter
LIML
OX
MOD
+0.5 V.
= 20 · log (V
= 20 · log (V
REF
REF
pin and SGO pin is divided by the resistors.
MODL
CPDL
LIML
V
SGO
MODL
pin and SGO pin is divided by the resistors should
REF
LIML
REF
) + 0.5 (dBV)
R3
R4
) – 3.0 (dBV)
pin and SGO pin is divided by the resistors
R5
R6
LIML
MODL
(V), the limiter level is expressed
R7
R8
(V), the TAO output level is
MSM7532
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