FPGA Video Processing Development Platform AV6045 User Manual
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SPI Flash pin assignments:
Pin Name
FPGA Pin
SPI_CLK
Y21
SPI_CSn
T5
SPI_DIN
AB20
SPI_DOUT
AA20
Part 3.4: AV6045 Power Supply
In order for FGPA to work properly, it is necessary to provide three power
supplies for P3V3, P1V2 and VCCIO for the FPGA. P3V3 is for the VCCAUX of
the FPGA, the voltage is 3.3V; P1V2 is for the VCCINT of the FPGA, the
voltage is 1.2V; VCCIO is for the VCCO of the BANK0, BANK1, BANK2 of the
FPGA. In addition, DDR3 on the core board requires P1V5 and a voltage of
1.5V (used to generate VTT and VREF), as mentioned above, and will not be
repeated here.
The VCCO of the FPGA is separated from the VCCAUX power supply. The
purpose is to enable the BANK IO voltage of the FPGA to be flexibly adjusted.
Different output voltages are obtained by adjusting the resistance value of the
VCCIO power supply section, so that the IO level of the FPGA core board can
be applied to different voltages.
The three-way power supply (P1V2, VCCIO, P1V5) adopts the
TLV62130RGT DCDC chip imported from American TI Company. It has high
efficiency, small size, no heat, and can provide large current and small ripple. It
is an excellent power solution for FPGA. A large number of high-grade
imported capacitors and inductors are used to ensure that the power supply of
the system is stable and reliable. The other circuit (P3V3) uses a smaller ripple
LDO chip SPX3819M5-L-3-3 because of the small current required.
