Chapter 18. General Routing Guidelines; Signal Name Conventions; Table 18-1. Signal Type Codes - Nvidia Jetson Xavier NX Design Manual

Chapter 18. General Routing Guidelines

18.1

Signal Name Conventions

The following conventions are used in describing the signals for Xavier:
Signal names use a mnemonic to represent the function of the signal. For example,

Secure Digital Interface Command signal is represented as
distinguish it from other text. All active-low signals are identified by an asterisk (*) after
the signal name. For example,
signals do not have the asterisk after the signal names. For example,
an active-high signal. Differential signals are identified as a pair with the same names that
end with _P and _N (for positive and negative, respectively). For example,
indicate a differential signal pair.
CSI_0_D0_N
The signal I/O type is represented as a code to indicate the operational characteristics of

the signal. The following table lists the I/O codes used in the signal description tables.
Table 18-1. Signal Type Codes
Code
A
DIFF I/O
DIFF IN
DIFF OUT
I/O
I
O
OD
I/OD
P
NVIDIA Jetson Xavier NX
indicates an active-low signal. Active-high
SYS_RESET*
Definition
Analog
Bidirectional Differential Input/Output
Differential Input
Differential Output
Bidirectional Input/Output
Input
Output
Open Drain Output
Bidirectional Input / Open Drain Output
Power
, written in bold to
SDMMC_CMD
SDMMC_CMD
CSI_0_D0_P
DG-09693-001_v1.7 | 86
indicates
and