Audio
NVIDIA Jetson Xavier NX DG-09693-001_v1.7 | 65
Figure 11-1. Audio Codec Connection Example
Audio Codec
IRQ
M CL K
BCL K
LRC LK
SDIN
SDOUT
HP_JACK_DETECT
PRES ENCE#
SDA
SCL
MICBIA S
MICROPHONE_IN_L
MICROPHONE_IN_R
HEADPHONE_OUT_R
HEADPHONE_OUT_L
MIC_IN_DETECT
I2 Sx_FS
I2Sx_DOUT
I2Sx_DIN
I2 Sx_S CLK
Jet son Modul e
I2 S0 or I2 S1
1uF
Avail. Jetson
Module G PIO
(see no te 1)
2.2uF
1uF
Jet son Modul e
GPIO09
(AUD_MCL K)
Jet son Modul e
I2C (see note 2)
I2 C2 _S DA
I2 C2 _S CL
Audio Panel
Header
1
3
5
7
9
2
4
6
8
10
VDD_1 V8
10kΩ
2.2kΩ
2.2kΩ
1MΩ
1MΩ
PO RT _1 L
PO RT _1 R
PO RT _2 R
SE NSE _SEN D
PO RT _2 L
GND
PRESENCE#
SENSE1_RETURN
Key
SENSE2_RETURN
Notes:
1. The Interrupt pin from the audio codec can connect to any available Jetson Xavier NX GPIO. If the
pin must be wake-capable, choose one of the GPIOs that supports this function.
2. I2C2 supports 1.8V operation since the interface is pulled to 1.8V through 2.2 kΩ resistors on the
module. If another I2C interface on Jetson Xavier NX is used, a level shifter will be required as all
the others are 3.3V.
3. Refer to the Intel High Definition Audio/AC’97 website for the latest information:
https://www.intel.com/content/www/us/en/support/articles/000005512/boards-and-kits/desktop-
boards.html.
Table 11-2. I2S Interface Signal Routing Requirements
Configuration / device organization 1 load
Max loading 8 pF
Reference plane GND
Breakout region impedance Min width/spacing
Trace impedance 50 Ω ±20%
Via proximity (signal to reference) < 3.8 (24) mm (ps) See note 1
Trace spacing Microstrip or Stripline 2x dielectric
Max trace length/delay ~22 (3600) In (ps) See note 2
Max trace length/delay skew between SCLK and
OUT/IN
~1.6 (250) In (ps) See note 2
Note: Up to four signal vias can share a single GND return via.
To Next Page
Loading...
Need help?
General
