Datasheet

MAX13335E/MAX13336E
Dual Automotive Differential Audio Receivers
with I
2
C Control and Diagnostics
22
Figure 12. Diagnostic Setup for Remote Jack Sense
Low-Power Standby
with Jack Sense
When the device is used as an auxiliary amplifier, there
is the option to put the device into a low-power standby
mode while waiting for a plug to be inserted into the jack.
To do this, perform the following steps:
1) Connect D0 to the R (or L) of the jack.
2) Connect R
SENSE
(or L
SENSE
) of the jack with a 50I
resistor to ground.
3) Set the SHDN bit to 1 in the CTRL0 register to power
down the amplifier.
4) Set D0[3:0] = 0001 to source 40FA out of the D0 pin.
5) Enable the JSI bit in the CTRL0 register.
When a plug is inserted, the DH0 comparator trips and sub-
sequently asserts the interrupt INT pin. The microcontroller
can read back the STAT0 register to check for DH0 = 1
and follow up by setting SHDN to 0.
In the standby state, the typical current consumption is
reduced to 290FA.
V
IDH
D1
L
R
C
D2
D1[3:0] = 0000
0-10kΩ
1kΩ-10kΩ
1kΩ-10kΩ
V
IDL
D3
V
IDH
D2[3:0] = 1111
V
IDL
40µA TO
705µA
40µA TO
705µA
V
IDH
D3[3:0] = 1101
V
IDL
705µA
MAX13335E/MAX13336E
DH3
DL2
CONNECTOR