UG-1134
EVAL-ADAU1467Z
Rev. A (Draft) | Page 14 of 55
EVALUATION BOARD FEATURES
The EVAL-ADAU1467Z provides access to the master and slave
control ports, multipurpose pins, auxiliary ADCs, S/PDIF
interfaces, and serial ports of the
as well as the
AD1337 CODEC.
RESET
To manually reset the
and
, press and
release the RESET push-button, S1 (see Figure 35). A reset
generator circuit toggles the reset pins on the
and
to perform a full hardware reset of both devices.
Figure 35. Manual Reset Push-Button
To generate a reset in software, right click in the empty white
border of the
USB Interface
block in the
Hardware Configuration
tab, and then choose
Device Enable/Disable
from the menu that
appears (see Figure 36). Performing this action sets the system
reset signal to logic low.
Figure 36. Toggling the Reset Signal in
One of the four serial input ports and one SDATAIOx pin are
connected to the ADCs of the
, and one of the four
serial output ports and three SDATAIOx pins are connected to
the digital-to-analog converts (DACs) of the
. Each
serial data pin carries two channels of serial audio in I
2
S format,
for a total of four channels of analog audio input and eight
channels of analog audio output.
Stereo Line Inputs
Two stereo input jacks allow four, single-ended, line level, analog
input signals. The
ADC inputs are configured such that
the full scale is 2.8 V p-p, which is approximately 1 V rms for a
sine wave. Any signal that exceeds 2.8 V p-p at the audio jack is
clipped, which creates distortion. The signals are fed to active
low-pass filters and converted to differential pairs before reaching
the ADCs of the
. The filters are designed for a system
sample rate of 44.1 kHz or 48 kHz.
The stereo input jacks accept standard stereo TRS 3.5 mm
(1/8 inch) mini plugs (tip connected to left, ring connected to
right, sleeve connected to ground) with two channels of audio
(see Figure 37).
Figure 37. Standard Stereo TRS 1/8 Inch Mini Audio Plug and Cable
Содержание SigmaDSP ADAU1463
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Страница 48: ...UG 1134 EVAL ADAU1467Z Rev A Draft Page 48 of 55 Figure 114 EVAL ADAU1467Z Layout Layer 5 Ground D R A F T...
Страница 49: ...EVAL ADAU1467Z UG 1134 Rev A Draft Page 49 of 55 Figure 115 EVAL ADAU1467Z Layout Bottom Copper D R A F T...
