Nvidia JETSON TX2 User Manual

NVIDIA Jetson TX2/TX2i OEM Product Design Guide
JETSON TX2/TX2i OEM PRODUCT | DESIGN GUIDE | 20180618 55
9.0 SDIO/SDCARD/EMMC
Jetson TX2/TX2i has four SD/MMC interfaces. The mapping of these interfaces for each module is show n in the SDIO / SD
Card / eMMC Interface Mapping table.
Table 52. SDMMC Pin Descriptions
Pin #
Module Pin Name
Tegra Signal
Usage/Description
Usage on the Carrier
Board
Direction
Pin Type
G18
SDCARD_CLK
SDMMC1_CLK
SD Card (or SDIO) Clock
SD Card
Output
CMOS  3.3/1.8V
G19
SDCARD_CMD
SDMMC1_CMD
SD Card (or SDIO) Command
Bidir
CMOS  3.3/1.8V
H18
SDCARD_D0
SDMMC1_DAT0
SD Card (or SDIO) Data 0
Bidir
CMOS  3.3V/1.8V
H17
SDCARD_D1
SDMMC1_DAT1
SD Card (or SDIO) Data 1
Bidir
CMOS  3.3V/1.8V
F19
SDCARD_D2
SDMMC1_DAT2
SD Card (or SDIO) Data 2
Bidir
CMOS  3.3/1.8V
F18
SDCARD_D3
SDMMC1_DAT3
SD Card (or SDIO) Data 3
Bidir
CMOS  3.3/1.8V
F17
SDCARD_CD#
GPIO_EDP2
SD Card Card Detect
Input
CMOS  1.8V
H16
SDCARD_PWR_EN
GPIO_EDP3
SD Card power switch Enable
Output
CMOS  1.8V
F20
SDCARD_WP
GPIO_EDP1
SD Card Write Protect
Input
CMOS  1.8V
B30
SDIO_CLK
SDMMC3_CLK
SDIO Clock
SDIO
Output
CMOS  1.8V
B29
SDIO_CMD
SDMMC3_CMD
SDIO Command
Bidir
CMOS  1.8V
B32
SDIO_D0
SDMMC3_DAT0
SDIO Data 0
Bidir
CMOS  1.8V
A32
SDIO_D1
SDMMC3_DAT1
SDIO Data 1
Bidir
CMOS  1.8V
A31
SDIO_D2
SDMMC3_DAT2
SDIO Data 2
Bidir
CMOS  1.8V
A30
SDIO_D3
SDMMC3_DAT3
SDIO Data 3
Bidir
CMOS  1.8V
A29
SDIO_RST#
NFC_EN
SDIO Reset
Output
CMOS  1.8V
Note:
The SDIO Signals highlighted in Cyan are available only on the Jetson TX2i module pins (not on Jetson TX2).
Table 53. SDIO / SD Card / eMMC Interface Mapping
Module Pins
Tegra Interface
Width
Usage
SDCARD
SDMMC1
4-bit
SD (Primary SD Card). Can be used instead for SDIO
interface.
N/A
SDMMC2
4-bit
Pins used for EQOS for Ethernet on the module
SDIO (TX2i only)
SDMMC3
4-bit
Jetson TX2: Used for WLAN/BT
Jetson TX2i: Available for SDIO at module pins
N/A
SDMMC4
8-bit
Used on the module - eMMC
9.1 SD Card
The Figure show s a standard SD socket. Internal pull-up resistors are used for SDCARD Data/CMD lines, so external pull-ups
are not required.

Nvidia JETSON TX2 Specifications

General

Brand	Nvidia
Model	JETSON TX2
Category	Microcontrollers
Language	English