CYUSB3KIT-001 EZ-USB FX3 Development Kit Guide, Doc. #: 001-70237 Rev. *C
80
Hardware
Figure 4-16. Flash Circuit of DVK Board
Note
Pull-up and pull-down resistors are not recommended on SPI_MISO/SPI_MOSI signals. They
are not populated on the REV-03 FX3 DVK board.
4.6.4
JTAG
The FX3 JTAG interface provides a standard five-pin interface for connection to a JTAG debugger.
The JTAG circuit on the DVK board provides an option to debug the firmware through the CPU
core's on-chip debug circuitry. Industry standard debugging tools for the ARM926E-J-S core can be
used for FX3 application development. The JTAG pins of FX3 come out on J51.
The introductory chapters in this note explain how to use the JTAG interface to debug FX3 interface
using the Segger J-Link.
SPI Flash
FLASH VCC : 2.3-3.6V
LVDDQ : 1.8/2.5V/3.3V
SPI_MISO_flash
SPI_CLK_flash
SPI_SSN_flash
SPI_MOSI_flash
SPI_Hold#_flash
SPI_Wp#_flash
VIO4
VIO4
VIO4
U26
PART_NUMBER = M25P40-VMN6TPB
Manufacturer = Numonyx/ST Micro
U26
PART_NUMBER = M25P40-VMN6TPB
Manufacturer = Numonyx/ST Micro
HOLD
7
VCC
8
S
1
Q
2
C
6
D
5
VSS
4
W/VPP
3
R250
4.7K
R250
4.7K
R252
100K
R252
100K
R248
4.7K
R248
4.7K
R246
100K
R246
100K
R251
DNP
R251
DNP
R249
4.7K
R249
4.7K
C77
0.1uF
C77
0.1uF
R247
100K
R247
100K
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