LA8518NM Datasheet, PDF (15/31 Pages) Sanyo Semicon Device – Signal Processor for Cordless Telephone Base Sets

Continued from preceding page.
Pin No.
51
Pin Name
MUTE
LA8518NM
Internal Equivalent Circuit
Pin Function
c Mute pin. Switches the transmitting signal
and the DTMF signal in the transmitting
system, and the receiving signal and the KT
signal in the receiving system (SW2 and
SW3 in the block diagram). When low, the
DTMF and KT signals are valid.
52
RV NF
53
RV OUT1
54
RV OUT2
c Receiver amplifier − input pin.
c Receiver amplifier 1 output pin.
c Receiver amplifier 2 output pin.
55
KT IN
c Key tone input pin.
56
TI IN
57
TI NF
58
TI OUT
59
TA IN
60
DTMF IN
c Transmission input amplifier + input.
Because bias voltage is not applied
internally, connect signal from REF (pin 61)
via a resistor.
c Transmission input amplifier − input pin.
c Transmission input amplifier output pin.
c Input pin for LINE output pin.
c Input for DTMF input pin.
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