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3 Development Board Circuit
3.3 Power Supply
DBUG392-1.0E
10(23)
3.2.2
USB Download Circuit
Figure 3-1 FPGA USB Download Diagram
TMS_FTDI
TCK_FTDI
TDI_FTDI
TDO_FTDI
USB-to-JTAG
Chip
USB_D+
USB_D-
14
13
16
18
U1
U17
GW1N-
LV9EQ144C6I5
3.2.3
Download Flow
Please plug USB download cable into the USB interface (J6) of the
development board to download FPGA, and then open Programmer, click
SRAM mode or Embedded flash mode to download bit stream file to SRAM
or flash.
3.2.4
Pinout
Table 3-1 FPGA Download Pinout
Name
Pin No.
BANK
Description
I/O Level
TMS_FTDI
13
3
JTAG Signal
3.3V
TCK_ FTDI
14
3
JTAG Signal
3.3V
TDI_ FTDI
16
3
JTAG Signal
3.3V
TDO_ FTDI
18
3
JTAG Signal
3.3V
MODE0
144
3
Mode selection pin
3.3V
MODE1
143
3
Mode selection pin
3.3V
RECONFIG_N
20
3
RECONFIG_N
3.3V
DONE
21
3
DONE indicator
3.3V
READY
22
3
READY
3.3V
3.3
Power Supply
3.3.1
Overview
DC5V is input by USB interface. The TI LDO power supply chip is used
to step down voltage from 5V to 3.3V, 1.8V, and 1.2V, which can meet the
power demand of the development board.