Rainbow Electronics MAX5406 - Manual (Page 20)

MAX5406
Audio Processor with Pushbutton Interface
20 ______________________________________________________________________________________
When F L(S) and F R(S) = 2 (LMR, AMBLI, and AMBRI are
connected with the multiplier network of Figure 8), the
equations become:
Use a passive filter network as shown in Figure 9 to filter
and delay the LMR signal in more advanced applications.
LOUT L R
ROUT R L
IN IN
IN IN
=
=
3
2
1
2
3
2
1
2
-
-
where
L R
is the signal at LMR
IN IN
-
4
⎛
⎝⎜ ⎞
⎠⎟
.
LOUT L F
L R
ROUT R F
L R
IN L S
IN IN
IN R S
IN IN
= + Ч
= Ч
( )
( )
( )
( )
-
-
-
4
4
1
0
PUSHBUTTON PRESSED
SWITCH
CONTACT
IS BOUNCING
SWITCH
CONTACT
IS STABLE
SWITCH
CONTACT
IS BOUNCING
READY TO ACCEPT
ANOTHER BUTTON PRESS
INPUT ACCEPTED
t LPW
t WS
t HPW
DEBOUNCE BY
WAITING FOR
STABLE LOW, t IPW
WAIT FOR
FIRST ZERO
CROSSING, t WS
DEBOUNCE BY
WAITING FOR
STABLE HIGH, t HPW
WIPER MOTION
WIPER MOVES HERE
Figure 11b. Wiper Transition Timing Diagram (Zero Crossing Detected)