MAX97236EVKIT+ Maxim Integrated Products, MAX97236EVKIT+ Datasheet - Page 18

• Manufacturer Part Number: MAX97236EVKIT+
• Description: Audio Modules & Development Tools MAX97236 Eval Kit
• Manufacturer: Maxim Integrated Products

Specifications of MAX97236EVKIT+

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Table 4. Configuration and Device Status Registers
Table 3. Register Map (continued)
Audio Amplifier with Jack Detection
Registers 0x00 and 0x01 are used to report the makeup of the inserted jack as well as report when a microphone
switch has been pressed or the jack has been removed. The IC uses registers 0x00, 0x01, 0x02, and IRQ to report the
status of various device functions. The Status_ register bits are set when their respective event occurs. Device status
can be determined either by polling registers 0x00, 0x01, and 0x02 or configuring the IRQ to go low when specific
events occur. Registers 0x04 and 0x05 determine which bits in the Status_ register trigger IRQ to go low. IRQ is cleared
upon reading the register.
18
AC Test Control
Keyscan Data
Passive MBH
DC Test Slew
State Forcing
For Expansion
For Expansion
(Read Only)
REGISTER
REGISTER
Status1
Enable1
Enable2
Control
0x00
BIT
PRESS
LFTEN
SHDN
7
6
5
4
B7
—
—
—
—
DDONE
NAME
JKIN
VOL
RANGE
RGHEN
RESET
—
B6
—
—
—
—
FORCE
Jack Detected
JKIN changes state when the jack detect circuit senses a load at the left headphone out-
put and SHDN = high
0 = No load at TIP.
1 = Load detected at TIP.
Jack Configuration Detect Done
DDONE changes state when the jack detect algorithm finishes and the jack configuration
is known and reported in the status registers 0x00, 0x01, and 0x02. Resets after reading.
0 = Jack detect algorithm is not complete.
1 = Jack detection algorithm is complete.
Volume Slew Complete
VOL goes high after the headphone volume has slewed to its final programmed value. VOL
sets every time a gain change is complete whether the gain change is positive or negative.
Ramp the volume down and wait for VOL to set to ensure clickless turn off. Resets after read-
ing.
0 = No volume slewing sequences have completed since any register was last read.
1 = Volume slewing complete.
—
VSEN
AC_REPEAT_
—
—
—
B5
ZDEN
MIC_
BIAS
B4
—
—
DC_SLEW
MIC_AMP
PULSE_WIDTH_
FAST
B3
—
—
KEYDATA
STATE
THRH
B2
KS
—
—
DESCRIPTION
PULSE_AMP_
B1
—
—
—
AUTO
B0
—
—
—
—
Device Status Registers
ADDRESS DEFAULT R/W
0x1A
0x1B
0x1C
0x1D
0x17
0x18
0x19
0x1E
0x00
0x00
0x20
0x05
0x00
0x00
—
—
R/W
R/W
R/W
R/W
R/W
—
—
R