Rainbow Electronics MAX5406 - Manual (Page 14)

MAX5406
Audio Processor with Pushbutton Interface
14 ______________________________________________________________________________________
Detailed Description
The MAX5406 implements dual logarithmic potentiome-
ters to control volume, dual potentiometers to control
balance, and dual linear digital potentiometers to set
the tone (Figure 1). A debounced pushbutton interface
is provided to control the audio-processor settings. The
MAX5406 provides differential buffered inputs with RF
filters to maximize noise reduction and a mixer to pro-
duce an equal amount of left and right input channels.
In addition to a differential output, the MAX5406 pro-
vides a monophonic output at SUBOUT for systems
with a subwoofer.
CMSNS
BIAS
GENERATOR
RIGHT
LOG POT
LEFT
LOG POT
CONTROLLED
BY AMB
LEFT AMBIENCE
SWITCH
CONTROLLED
BY AMB
RIGHT AMBIENCE
SWITCH RF FILTER
RF FILTER
RF FILTER
RF FILTER
L1_H
L1_L
L2_H
L2_L
BIAS
R1_H
R1_L
R2_H
R2_L
DIGITAL INTERFACE
DGND V SS
LPR
AMBRI V LOGIC
SHDN
MUTE
AMB
BALL
BALR
VOLDN
VOLUP
BASSDN
BASSUP
TREBDN
TREBUP CBR1 CBR2 CTR1 CTR2
CRSN
CRSP
SUBOUT
CSUB
CLSN
CLSP
LOUT
ROUT
CBL1 CBL2 CTL1 CTL2
V DD
LMR AMBLI
MAX5406
R SUB
R LS
R RS
CBIAS
BASS/TREBLE OUTPUT STAGE
SEE FIGURE 7
BASS/TREBLE OUTPUT STAGE
SEE FIGURE 7
Figure 1. Block Diagram