3 Development Board Circuit
3.2 Download
DBUG359-1.2E
11(27)
Table 3-2 FPGA I/O Pinout
I/O BANK No.
Signals
I/O BANK0
Pins used for download mode selection
LVDS differential input
LED&Reset&Slide switch&Key switch
GPIO
I/O BANK1
LVDS differential input
LVDS differential output
I/O BANK2
JTAG
GPIO
I/O BANK3
DONE&RECONFIG_N&READY
MSPI
GPIO
I/O BANK4
Ethernet
I/O BANK5
GPIO
Ethernet
I/O BANK6
GPIO
I/O BANK7
50MHz clock input
GPIO
3.2
Download
3.2.1
Overview
The development board provides an USB download interface. The
data stream file can be downloaded to the internal SRAM, or the external
flash as needed.
Note!
When downloaded to SRAM, the data stream file will be lost if the device is power
down, and it will need to be downloaded again after power-on.
If downloaded to flash, the data stream file will not be lost if the device is powered
down.
3.2.2
USB Download Circuit
Figure 3-3 Connection Diagram for FPGA USB Downloading
TMS_LQ144
TCK_LQ144
TDI_LQ144
TDO_LQ144
USB-to-JTAG
Chip
USB_D+
USB_D-
14
13
16
18
U9
U4
GW2AR18_V1.1
Summary of Contents for DK START GW2AR18 V1.1
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