LA8518NM Datasheet, PDF (21/31 Pages) Sanyo Semicon Device – Signal Processor for Cordless Telephone Base Sets

LA8518NM
Speech Network Block Switch Operation
Power supply
Line amp
SW2 and SW3 are controlled by pin 51 (MUTE), while SW1 and SW4 are controlled by the serial data (address 39). (SW2 and
SW3, and SW1 and SW4 are coupled to each other.)
SW1, SW4 operation
Condition
Power on (Initial state)
Address 39 on
Power off
SW1
1
2
2
SW4
* When the power is off, SW1 and SW2 are fixed at ‘‘2’’ and
cannot be switched.
1
2
2
SW2, SW3 operation
Pin 51 (MUTE)
High
Low
SW2
SW3
* SW2 and SW3 operate as shown in the table at left,
regardless of whether the power is on or off.
1
1
2
2
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