3 Development Board Circuit
3.2 Download Module
DBUG375-1.0E
10(40)
Figure 3-1 Connection Diagram of FPGA Downloading and Configuration
FLASH_SPI_MISO
FLASH_SPI_MOSI
FLASH_SPI_CS_N
FLASH_SPI_CLK
JTAG_TCK
JTAG_TDO
JTAG_TDI
JTAG_TMS
USB to
JTAG chip
USB_D+
USB_D-
Configure
FLASH
By configuring EEPROM chip, the B channel of FT2232 can be
configured as an asynchronous FIFO interface. The connection diagram is
follows.
Figure 3-2 Asynchronous FIFO Connection Diagram
EEDATA
EECLK
EECS
FTDI_RD#
FTDI_TXE#
FTDI_RXF#
FIFO_D[7:0]
USB to
FIFO
USB_D+
USB_D-
Configure
EEPROM
FTDI_SIWU#
FTDI_WR#
3.2.2
Pinout
Table 3-1 FPGA Download and Pinout
Name
FPGA Pin No. BANK
I/O Level
Description
JTAG_TCK
N20
2
3.3V
JTAG Signal
JTAG_TDO
M22
2
3.3V
JTAG Signal
JTAG_TDI
M20
2
3.3V
JTAG Signal
JTAG_TMS
N22
2
3.3V
JTAG Signal