Nvidia JETSON TX2, Manual

Page: 76 / 103

NVIDIA Jetson TX2/TX2i OEM Product Design Guide
JETSON TX2/TX2i OEM PRODUCT | DESIGN GUIDE | 20180618 76
▪
Buffers or level shifters can be used to separate the signals from devices that may be affected. The buffer/shifter
should be disabled until the device pow er is enabled.
Table 87. Module Pins Pulled/Driven High by Tegra Prior to CARRIER_PWR_ON Active
Module Pin Power-on Reset
Default Pull-up Strength
( kΩ )
Module Pin Power-on Reset
Default Pull-up Strength
( kΩ )
DSPK_OUT_CLK Internal Pull-up ~100 JTAG_TMS Internal Pull-up ~100
SPI1_CS0# Internal Pull-up ~100 JTAG_TDI Internal Pull-up ~100
RESET_IN# Driven High na UART1_RX Internal Pull-up ~100
FORCE_RECOV# Internal Pull-up ~100 SPI0_MISO Internal Pull-up ~100
SLEEP# Internal Pull-up ~100 SPI0_MOSI Internal Pull-up ~100
GPIO7_TOUCH_RST Driven High na CAN1_TX Internal Pull-up ~20
CARRIER_STBY#
Driven High na CAN1_RX Internal Pull-up ~20
GPIO5/CAM_FLASH_EN Internal Pull-up ~100 CAN0_TX Internal Pull-up ~20
USB0_VBUS_DET Internal Pull-up ~100 CAN0_RX Internal Pull-up ~20
SPI2_CS1# Internal Pull-up ~100 GPIO6_TOUCH_INT Driven High na
SPI2_CS0# Internal Pull-up ~100 GPIO3_CAM1_RST# Internal Pull-up ~18
UART0_TX Internal Pull-up ~100 CAM_VSYNC Internal Pull-up ~18
UART0_RX Internal Pull-up ~100 GPIO2_CAM0_RST# Internal Pull-up ~18
WDT_TIME_OUT# Driven High na
Table 88. Module Pins Pulled High on the Module Prior to CARRIER_PWR_ON Active
Module Pin Pull-up Supply
Voltage (V)
External
Pull-up ( kΩ )
Module Pin Pull-up Supply
Voltage (V)
External
Pull-up ( kΩ )
VIN_PWR_BAD# 5.0 10 USB0_EN_OC# 3.3 100
RESET_OUT# 1.8 100 USB1_EN_OC# 3.3 100
I2C_GP0_CLK/DAT 1.8 1.0 PEX0_CLKREQ# 3.3 56
I2C_GP1_CLK/DAT 3.3 1.0 PEX0_RST# 3.3 56
I2C_GP2_CLK/DAT 1.8 1.0 PEX1_CLKREQ# 3.3 56
I2C_GP3_CLK/DAT 1.8 1.0 PEX1_RST# 3.3 56
I2C_PM_CLK/DAT 1.8 1.0 PEX2_CLKREQ# 3.3 56
I2C_CAM_CLK/DAT 1.8 1.0 PEX2_RST# 3.3 56
PEX_WAKE# 3.3 56
13.5 Pad Drive Strength
The table below provides the maximum MPIO pad output drive current w hen the pad is configured for the maximum
DRVUP/DRVDN values (11111b). The MPIO pad types include the ST, DD, CZ and LV_CZ type pads. The pad types can be
found in the Jetson TX2/TX2i Module Data Sheet.
Table 89. MPIO Maximum Output Drive Current
IOL/IOH Pad Type VOL VOH
+/- 1mA ST 0.15*VDD 0.825*VDD
+/- 1mA DD 0.15*VDD 0.8*VDD
+/- 1mA CZ (1.8V mode) 0.15*VDD 0.85*VDD
+/- 1mA CZ (3.3V mode) 0.15*VDD 0.85*VDD
+/- 1mA LV_CZ 0.15*VDD 0.85*VDD
+/- 2mA ST 0.15*VDD 0.7*VDD
+/- 2mA DD 0.175*VDD 0.7*VDD
+/- 2mA CZ (1.8V mode) 0.25*VDD 0.75*VDD
+/- 2mA CZ (3.3V mode) 0.15*VDD 0.75*VDD
+/- 2mA LV_CZ 0.25*VDD 0.75*VDD