LA8518NM Datasheet, PDF (8/31 Pages) Sanyo Semicon Device – Signal Processor for Cordless Telephone Base Sets

— Serial control data format —
LA8518NM
c Serial data content
First bit
A0 to A6 → Specify the address of a crosspoint switch and a control switch.
D
→ Turns the crosspoint switch on and off and controls the control switch.
(When D = 1, the switch is on; when D = 0, the switch is off.)
c Example: Turning address 11 (AUX input, RF1 output) on
The address table is shown on the following page:
Note 1: Because there is a power-on reset function, all crosspoint switches and control switches are reset when the external power
supply (V_CC at pin 31) is turned on.
Note 2: SW2 and SW3 in the block diagram are controlled by the MUTE pin (pin 51); the signals that are enabled are shown
below.
MUTE pin
H
L
SW2
Transmitting (Pin 58)
TAIN (Pin 59)
DTMF (Pin 60)
SW3
Receiving (Pin 7)
KT (Pin 55)
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