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ZYNQ Ultr FPGA Board AXU7EV User Manual
66 / 68
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JTAG debug mode, QSPI FLASH, EMMC and SD2.0 card startup mode. After
ZU7EV chip is powered on, it will detect the level of (PS_MODE0~3) to
determine the startup mode. The user can select different startup modes
through the DIP switch SW1 on the carrier board. The SW1 startup mode
configuration is shown in the following table 3-21-1.
SW1
Dial Position
(
1
,
2
,
3, 4
)
MODE[3:0]
Start mode
ON
,
ON
,
ON
,
ON
0000
PS JTAG
ON
,
ON
,
OFF ,ON
0010
QSPI FLASH
ON
,
OFF
,
ON
,
OFF
0101
SD Card
ON
,
OFF
,
OFF
,
ON
0110
EMMC
Part 3.22: Power Supply
The power input voltage of the AXU7EV development board is DC12V. In
the carrier board, the DC12V is converted into +5V, +3.3V, +1.8V, through
one-way DC/DC power chip TPS54620 and two-way DC/DC power chip
MP2323/MP1482. The schematic diagram of the power supply design on the
board is shown in Figure 3-22-1:
Figure 3-22-1: Carrier Board Power Schematic