Audio
Jetson AGX Xavier Series Product
DG-09840-001_v2.5 | 102
Module Pin Name (Xavier
Function)
Type
Termination
Description
I2S1_DIN (I2S1_SDIN)
I2S2_DIN (I2S2_SDIN)
I2S3_DIN (I2S4_SDIN)
JAX: GPIO04 (I2S6_SDIN)
JAXi: No I2S support. GPIO only.
I
I2S Data Input: Connect to Data Output
pin of audio device.
AUD_MCLK
O
Audio Codec Master Clock: Connect to
clock pin of Audio Codec.
GPIO20_AUD_INT
I
Audio Interrupt: Connect to interrupt
pin of Audio Codec.
12.1.2
DMIC Design Guidelines
The following table details the signal routing requirements for the DMIC interface.
Table 12-5.
DMIC Interface Signal Routing Requirements
Parameter
Requirement
Units
Notes
Clock Frequency/Period
12/83.33
MHz/ns
Data Bit-rate/Period (DDR24)
24/41.66
Mbps/ns
Configuration / Device Organization
1
load
Topology
Point to Point
Reference plane
GND
Trace Impedance
45-50
Ω
±20%
Via proximity (Signal via to GND return via)
< 3.8 (24)
mm (ps)
See Note
Trace spacing – Microstrip / Stripline
2x / 2x
dielectric
Max Trace Delay
1280
ps
Max Trace Delay Skew between CLK and DAT
150
ps
Note: Up to 4 signal vias can share a single GND return via.
Table 12-6.
DMIC Signal Connections
Module Pin Name (Xavier
Function)
Type
Terminatio
n
Description
GPIO09 (DMIC[5 or 3]_CLK)
O
Digital Microphone Clock: Connect to clock pin of DMIC
device
GPIO08 (DMIC[5 or 3]_DAT)
I
Digital Microphone Data: Connect to data pin of DMIC device
