Elma JetKit-3010, Руководство пользователя

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USER MANUAL JetKit-3010 ELMA.COM
www.elma.com EMBEDDED BOARDS
3.8.7 USB2.0 connector
The JetKit-3010 houses one USB2.0 connector to provide access to a USB2.0 interface of the
NVIDIA
® Xavier™. The pinout of the USB2.0 connector can be found in Table 22.
Table 22 - USB2.0 pinout
Pin Signal
1 USB2_VBUS
2 USB2_D_N
3 USB2_D_P
4 GND
3.8.8 Front Panel LEDs
The JetKit-3010 houses three green front panel LEDs as well as one red front panel LED. There is
one Power LED as well as there are three user defined LEDs controlled via the NVIDIA
® Xavier™.
The location of the LEDs can be found in Figure 4. Information about the LEDs and control can be
found in Table 23.
Table 23 - Front Panel LEDs
LED Controlled by Module Pin Color Comment
Power SYS_VIN_HV - Green Indicates Power for the Xavier™ Module
LED 1 SPARE_GPIO4 B59 Green Lit when the module boots in non-
recovery mode
LED 2 SPARE_GPIO13 G7 Green -
LED 3 SPARE_GPIO17 A54 Red -
The GPIO number under Linux does not correspond with the GPIO number of the signal. The GPIO
number under Linux calculates from the GPIO Port, the GPIO number as well as an offset.
The formula and port factors can be found in the Linux header file “tegra194-gpio.h”. In the basic
installation, the formula and used port factors are:
# define TEGRA194_MAIN_GPIO_PORT_A 0
# define TEGRA194_MAIN_GPIO_PORT_Q 16
# define TEGRA194_MAIN_GPIO_PORT_T 19
#define TEGRA194_MAIN_GPIO(port, offset) ((TEGRA194_MAIN_GPIO_PORT_##port * 8) + offset)
With the offset set to 288, the Linux GPIO numbers can be found in Table 24.
Table 24 - LED GPIO control
LED Signal Module GPIO Linux GPIO number
LED 1 SPARE_GPIO4 GPIO3_PA.02 290
LED 2 SPARE_GPIO13 GPIO3_PT.03 443
LED 3 SPARE_GPIO17 GPIO3_PQ.01 417