Hardware Description; Jumpers - Analog Devices EVAL-ADAU1861 User Manual

User Guide

HARDWARE DESCRIPTION

JUMPERS

Table 10 lists the connector and jack descriptions.
Table 10. Connector and Jack Description
Reference Designator Functional Name
P1 USB interface
P2 Analog Input 2
P3 Analog Input 1
P4 Analog Input 0
P5 Analog output
P6 Analog output
P7 Analog output
P8 Analog output
P9 Analog output
P10 Analog output
P11 Analog output
P12 JTAG Interface
P13 Analog output
P14 External control interface
P15 Analog output
P16 External flash interface
P17 UART interface
P18 Serial Audio Port 0
P19 Serial Audio Port 1
P20 Internal and external DMIC
select
P21 PDM output interface
P22 EXT_12V
P23 EXT_AVDD
P24 EXT_IOVDD
P25 EXT_HPVDDL
P26 EXT_DVDD
JP1 and JP26 to JP28 Communication Interface
JP2 Audio source bias select
for ADC2
JP3 Audio source bias select
for ADC1
JP4 Audio source bias select
for ADC0
JP5 STEREO or MONO sound
selection
JP6 ADC2 input option
JP7 ADC1 input option
JP8 ADC0 input option
JP9 CLK option
analog.com
Description
USB +5 V power and communication with GUI.
Default differential-input, 3.5 mm jack.
Default differential-input, 3.5 mm jack.
Default differential-input, 3.5 mm jack.
DAC1 and DAC2 single-output, 3.5 mm jack.
DAC3 and DAC4 single-output, 3.5 mm jack.
DAC5 and DAC6 single-output, 3.5 mm jack.
DAC7 and DAC8 single-output, 3.5 mm jack.
DAC9 and DAC10 single-output, 3.5 mm jack.
DAC11 and DAC12 single-output, 3.5 mm jack.
DAC13 and DAC14 single-output, 3.5 mm jack.
Joint Test Action Group (JTAG) communication.
Default differential-output, 3.5 mm jack.
External communication with ADAU1966A.
DAC15 and DAC16 single-output, 3.5 mm jack.
Header that connects the external flash to the ADAU1861. When using the external flash, connect the JP22 pull-up
to AVDD. Note that the default is to pull-down to GND on the board.
UART communication with level shift.
Input and output header for serial-audio signals.
Input and output header for serial-audio signals.
Used to select between the external DMIC source or the on-board DMIC. Note that the default is floating on the
board. When using the external DMIC arrays, connect the external DMIC with this interface. When using the level
shifter, connect JP31, JP32, and JP33. Note that the default is by floating.
Header that allows PDM interface devices to be connected to the EVAL-ADAU1861EBZ.
Used to connect the external 12 V supply to the EVAL-ADAU1861EBZ.
Used to connect the external AVDD (1.8 V) supply to the EVAL-ADAU1861EBZ. When using the external AVDD,
connect JP38 to EXT_AVDD.
Used to connect the external IOVDD (1.8 V) supply to the EVAL-ADAU1861EBZ. When using the external AVDD,
connect JP39 to EXT_IOVDD.
Used to connect the external HPVDDL (1.3 V) supply to the EVAL-ADAU1861EBZ. When using the external AVDD,
connect JP41 to EXT_HPVDDL.
Used to connect the external DVDD (0.9 V) supply to the EVAL-ADAU1861EBZZ. When using the external AVDD,
connect JP40 to EXT_DVDD.
2
By default, I C or SPI is used to communicate with the ADAU1861 by using the S1 switch. These jumpers must
connect Pin 2 and Pin 3 if choose to use the UART.
Provides the bias selection for the external audio sources. Note that the default is by floating.
Provides the bias selection for the external audio sources. Note that the default is by floating.
Provides the bias selection for the external audio sources. Note that the default is by floating.
Used to choose between stereo and mono.
Selects single-ended input or differential input (AINP2 connects to DIFF by default).
Selects single-ended input or differential input (AINP1 connects to DIFF by default).
Selects single-ended input or differential input (AINP0 connects to DIFF by default).
Selects EXT_CLK or Y1 output, default Y1 output.
EVAL-ADAU1861
Rev. 0 | 12 of 24