CYUSB3KIT-001 EZ-USB FX3 Development Kit Guide, Doc. #: 001-70237 Rev. *C
65
4.
Hardware
This chapter describes the different hardware interfaces available on the FX3 DVK. It explains the
following DVK board components:
■
Power supply
■
USB 3.0 Micro-B receptacle connector
■
Clocking mechanism using on-board crystal
■
GPIFII connector
■
Reset circuit
■
Serial interfaces – I
2
S, I
2
C, SPI, UART, and JTAG.
4.1
Power Supply
The FX3 DVK board can be powered in two ways:
■
Self-power: Use the external 5-V power adapter supplied with the kit to power the DVK board.
■
Bus-power: The board can be powered using the USB 3.0 cable. Connect the USB cable
supplied with the kit between the PC host and the J48 USB connector on board. The PC host
supplies power to the DVK board through the USB cable. Short pins 1–3 or 2–4 of jumper J53 in
bus-power mode.
FX3 supports several I/O interfaces including I
2
S, I
2
C, SPI, UART and GPIF II. These interfaces are
capable of operating at different voltage levels. The voltage levels for FX3 I/O power domains can be
selected using jumpers as shown in
Table 4-1
.
Table 4-1. Power Supply Domain
Power Domain
Jumper
Jumper positions
Voltage levels
VIO1 J136
1–6 (labeled V1P8 on board)
1.8 V
2–5 (labeled V2P5 on board)
2.5 V
3–4 (labeled V3P3 on board)
3.3 V
VIO2
J144
1–6 (labeled V1P8 on board)
1.8 V
2–5 (labeled V2P5 on board)
2.5 V
3–4 (labeled V3P3 on board)
3.3 V
VIO3
J145
1–6 (labeled V1P8 on board)
1.8 V
2–5 (labeled V2P5 on board)
2.5 V
3–4 (labeled V3P3 on board)
3.3 V
VIO4
J146
1–6 (labeled V1P8 on board)
1.8 V
2–5 (labeled V2P5 on board)
2.5 V
3–4 (labeled V3P3 on board)
3.3 V
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