Pdm Clk Select And 2-Step Discovery ( Jp1); Adau1452 I2C Bus Switch ( Jp2 And Jp3); Ltc4368 Wakeup ( Jp4) - Analog Devices EVAL-AD2437A1MZ Manual

Figure 3-3: Jumper Configurations

PDM CLK Select and 2-Step Discovery ( JP1)

This 4-way jumper is used for 2-Step Discovery as well as the PDM CLK source for the on-board microphones from
2
the A B transceiver.
Jumper
1 and 2 (DEFAULT)
2 and 3
3 and 4

ADAU1452 I2C Bus Switch ( JP2 and JP3)

These jumpers are used to enable the I2C bus for ADAU1452 SigmaDSP. The table below lists the options to pro-
gramm or parameter write from AD2437 chip, USBi to ADAU1452 or EEPROM. Refer to the schematic for fur-
ther information.
Jumper JP2 Jumper JP3 ADAU1452_MP6 I2C Bus Switch
OPEN OPEN
(DEFAULT) (DEFAULT)
CLOSED OPEN
X CLOSED
X X

LTC4368 Wakeup ( JP4)

EVAL-AD2437A1MZ Manual
(U26 , U27)
X CLOSED
X CLOSED
1 - > 0 OPEN - > CLOSED SELFBOOT of ADAU1452 from Boot EEPROM
1 OPEN
Routing
2-Step Discovery through GPIO7
Alternate PDM clock source from GPIO7
PDM clock source from AD2437 BCLK
Use Case and Action
Program/Parameter write from AD2437 or USBi to ADAU1452
or Boot EEPROM
Program/Parameter write from AD2437 or USBi to ADAU1452
Parameter write from ADAU1452 to BOOT EEPROM
Jumpers
TOP
3–5