MAX5406 MAXIM [Maxim Integrated Products], MAX5406 Datasheet - Page 20

• Manufacturer Part Number: MAX5406
• Description: Audio Processor with Pushbutton Interface
• Manufacturer: MAXIM [Maxim Integrated Products]

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