R
Configuration Options
Configuration Options
The FPGA on the ML50 x Evaluation Platform can be configured by the following major
devices:
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?
?
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Xilinx download cable (JTAG)
System ACE controller (JTAG)
Two Platform Flash PROMs
Linear Flash memory
SPI Flash memory
The following section provides an overview of the possible ways the FPGA can be
configured.
JTAG (Xilinx Download Cable and System ACE Controller) Configuration
The FPGA, two Platform Flash PROMs, and CPLD can be configured through the JTAG
port. The JTAG chain of the board is illustrated in Figure 1-9 .
System ACE
Platform Flash Memories
CPLD
Controller
FPGA
Expansion
TDI
TDO
TDI
TDO
TDI
TDO
TSTTDI
CFGTDO
TDI
TDO
TDI
U1
J1
U4
U5
U3
TSTDO
U2
CFGTDI
1
2
3
J21
J5
TDO
UG347_08_112706
Figure 1-9:
JTAG Chain
The chain starts at the PC4 connector and goes through the Platform Flash PROMs, the
CPLD, the System ACE controller, the FPGA, and an optional extension of the chain to the
expansion card. Jumper J21 determines if the JTAG chain should be extended to the
expansion card.
The JTAG chain can be used to program the FPGA and access the FPGA for hardware and
software debug. The JTAG chain is also used to program the Platform Flash PROM and the
CPLD.
The PC4 JTAG connection to the JTAG chain allows a host computer to download
bitstreams to the FPGA using the iMPACT software tool. PC4 also allows debug tools such
as the ChipScope Pro Analyzer or a software debugger to access the FPGA.
The System ACE controller can also program the FPGA through the JTAG port. Using an
inserted CompactFlash card, configuration information can be stored and played out to
the FPGA. The System ACE controller supports up to eight configuration images that can
selected using the three configuration address DIP switches. Under FPGA control, the
System ACE chip can be instructed to reconfigure to any of the eight configuration images.
The configuration mode should be set to 101 . Jumper J21 should exclude the expansion
card from the JTAG chain, and switch SW3, pin 8 should be ON to use System ACE
configuration. When set correctly, the System ACE controller programs the FPGA upon
power-up if a CompactFlash card is present or whenever a CompactFlash card is inserted.
ML505/ML506/ML507 Evaluation Platform
UG347 (v3.1.2) May 16, 2011
53
相关PDF资料
HW-V5-ML550-UNI-G EVALUATION PLATFORM VIRTEX-5
HW-V5-ML555-G BOARD EVAL FOR VIRTEX-5 ML555
HW-V5-ML561-UNI-G EVALUATION PLATFORM VIRTEX-5
I-JET JTAG ARM DEBUGGING PROBE
IAC24A INPUT MODULE AC 5MA 24VDC
IAC5EQ INPUT MODULE AC 10MA 5VDC
IB8RM SURGE SUPP 8OUT 12'CORD W/REMOTE
IBAR12-20T SURGE SUPPRSSR 20A 12OUT RACKMNT
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