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User Guide
USING THE EVALUATION BOARD
CODEC SYSTEM
Clock Option
The EVAL-ADAU1860EBZ has three options for providing a master
clock to the ADAU1860. The first option is to provide an external
MCLK signal directly to the MCLKIN pin of the codec from P3 and
to disable the on-board oscillator by placing a jumper on P25. The
second option is to use the on-board 24.576 MHz oscillator, and
the third option is to use the on-board 24.576 MHz crystal. Refer to
Table 4 to check the master clock settings.
Table 4. Master Clock Jumper Settings
Clock Source Jumper Settings
Oscillator
Pin 1 to Pin 2 of P8, and Pin 2 to Pin 3 of P27
Crystal
P8 removed, Pin 1 to Pin 2 of P27
External MCLK Pin 2 to Pin 3 of P8, and Pin 2 to Pin 3 of P27
Boot-Up Options
There are two boot-up options for the EVAL-ADAU1860EBZ. Use
P26 to select the boot-up options, which are self boot enabled or
disabled. When self boot is enabled, the Tensilica HiFi 3z DSP core
of the ADAU1860 loads the program from flash through QSPI
two ROM boot modes, which can be selected by P29.
Power Down
The EVAL-ADAU1860EBZ can power down all of the analog and
digital circuits of the codec by pressing the S2 button or by placing
a jumper on P28.
AUDIO INPUTS AND OUTPUTS
The EVAL-ADAU1860EBZ has multiple audio input and output
options, including digital and analog. There are three analog inputs,
one analog output, eight digital microphone channels, a 2-channel
pulse density modulation (PDM) output, and two serial audio inter-
face ports.
Analog Inputs
The three analog inputs (P9, P10, and P11) can be configured
as microphone or line inputs, and all of the inputs are differential
or single-ended. Each analog input can work with an optional
programmable gain amplifier (PGA).
Refer to
Table 5
for the hardware configuration of the analog input
signals. Note that the control register must be changed simultane-
ously.
analog.com
Table 5. ADC Mode Jumper Settings
ADC No.
ADC0
ADC1
ADC2
External Port
Not applicable
Not applicable
Analog Output
Pin 10 of P3
The analog output (P30) can be set as a line output driver or as a
headphone driver. In line output mode, the typical load is 10 kΩ. In
headphone output mode, the typical loads are 16 Ω to 32 Ω. The
load on the EVAL-ADAU1860EBZ is 32 Ω by default.
Digital Microphone Inputs
™
with
There are two default digital microphone (DMIC) interfaces on the
EVAL-ADAU1860EBZ, P44 and P23. Note that Pin 1, Pin 3, Pin 5,
Pin 7, and Pin 9 of P44 and Pin 2, Pin 4, Pin 6, Pin 8, and Pin 10 of
P23 are GND.
Table 6. DMIC Interface
Function
IOVDD
DMIC Clock 0
DMIC Data 0 DMIC Data 1
IOVDD
DMIC Clock 0
DMIC Data 2 and DMIC Data 3
PDM Outputs
The PDM output is P7, and its recommended setting is to use the
MP22 to MP25 pins as PDM outputs. Note that the MP22 to MP25
pins must be set as PDM outputs in this case. See
example of this case. In addition, note that Pin 2, Pin 4, Pin 6, and
Pin 8 of P7 are GND.
Table 7. PDM Interface
Function
MP22: PDM_CLK
MP23: PDM0
MP24: PDM_CLK
MP25: PDM1
EVAL-ADAU1860
Mode
Jumper Settings
Differential
Pin 1 to Pin 2 of P104, and Pin 1 to Pin 2 of
P105
Single ends
Pin 2 to Pin 3 of P104, and Pin 2 to Pin 3 of
P105
Differential ends
Pin 1 to Pin 2 of P12, and Pin 1 to Pin 2 of
P14
Single ends
Pin 2 to Pin 3 of P12, and Pin 2 to Pin 3 of
P14
Differential ends
Pin 1 to Pin 2 of P13, and Pin 1 to Pin 2 of
P15
Single ends
Pin 2 to Pin 3 of P13, and Pin 2 to Pin 3 of
P15
Pin Number and Pxx Value
Pin 2 of P44
Pin 4 of P44
Pin 6 of P44
Pin 1 of P23
Pin 3 of P23
Pin 5 of P23
Pin Number and Px Value
Pin 1 of P7
Pin 3 of P7
Pin 5 of P7
Pin 7 of P7
Table 7
for an
Rev. 0 | 11 of 26
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