NXP Semiconductors i.MX 8M Nano UltraLite DDR3L, Руководство пользователя по оборудованию, Страница: 11 / 17

• JTAG_TMS TAP Machine State
• JTAG_TDI TAP Data In
• JTAG_TDO TAP Data Out
2.15 USB-UART connector (J901)
The i.MX 8M Nano UL Applications Processor has four independent UART Ports (UART1 – UART4). On the EVK, UART2 is
used for Cortex-A53 core, and UART4 is used for Cortex-M7 core. We use a Single chip USB to dual channel UART IC for
system debugging, and the part number is FT2232D. The developers can download the driver from
FTDI Chip . After the driver
for FT2232D is installed, the PC will enumerate two COM ports when the USB cable is plugged into J901. Developers can use
Putty, Tera Term, Xshell, or other terminal tools.
Table 4 lists the required settings.
Table 4. Terminal setting parameters
Data rate 115,200 Baud
Data bits 8
Parity None
Stop bits 1
2.16 Expansion connector (J1003)
One 40-pin dual-row Pin Header connector (J1003) is provided on the EVK to support I2S, UART, I2C, and GPIO connection. The
developers can use the port for some specific application development.
Table 5. J1003 pin definition
No. Net name Description No. Net name Description
1 VEXT_3V3 Power Output, 3.3 V 2 VDD_5V Power Output, 5 V
3 I2C3_SDA_3V3 I2C3 data signal 4 VDD_5V Power Output, 5 V
5 I2C3_SCL_3V3 I2C3 clock signal 6 GND Ground
7 UART3_CTS UART3 clear to send signal 8 UART3_TXD UART3 transmit signal
9 GND Ground 10 UART3_RXD UART3 transmit signal
11 UART3_RTS UART3 request to send signal 12 EXP_IO8 Expansion IO signal
13 EXP_IO9 Expansion IO signal 14 GND Ground
15 EXP_IO10 Expansion IO signal 16 EXP_IO11 Expansion IO signal
17 VEXT_3V3 Power Output, 3.3 V 18 — NC
19 ECSPI2_MOSI SPI2 data signal, master output
slave input
20 GND Ground
21 ECSPI2_MISO SPI2 data signal, master input
slave output
22 — NC
Table continues on the next page...
NXP Semiconductors
Specifications
i.MX 8M Nano UltraLite DDR3L Evaluation Kit Hardware User's Guide, Rev. 0, March 2, 2021
User's Guide 11 / 17