R
3.
User LEDs
Using one of the clock synthesizer chips. If using the parallel input mode, SW9 and/or
SW11 must be pressed and released to obtain a known output frequency from the
clock synthesizers after a power-on cycle.
?
?
Typically, CLOCK_SYNTH1 is reserved for the DDR2 memory clock generation.
If the DDR2 memory is not used or the clock frequency for the DDR2 memory is
200 MHz, this clock can be used for 200 MHz clock generation. The ML555 board
supports DDR2-400, DDR2-533, and DDR2-667 rates.
CLOCK_SYNTH2 routed through the U3 clock mux goes to GCLK_P J20 and
GCLK_N J21. The SATA_MGT_CLKSEL output port on FPGA pin H15 must be
set to either a logic 1 level to select the Clock Synthesizer 2 as the clock source or a
logic 0 level to select the fixed 125 MHz LVDS clock source as input to the global
clock pins. Depending on which GTP elements are used in the design, the second
clock synthesizer might be available for IDELAYCTRL reference clock.
User LEDs
The ML555 board provides three user LEDs that can be turned ON by driving the LED
signals to Ground. Table 3-27 lists the FPGA pin assignments.
Table 3-27:
User LED Pin Assignments
LED Signal
USER_LED0
USER_LED1
USER_LED2
Designation
USER1 D1
USER2 D2
USER3 D3
FPGA Pin Number (1)
(FF1136 Package)
H8
G8
G10
Notes:
1. These signals are connected to FPGA bank 20. The FPGA reference voltage, V CCO , for this bank is 2.5V.
See the ML555 board schematic on the CD-ROM for additional information.
Configuration INIT and DONE LEDs
The ML555 board provides INIT and DONE indicator LEDs, that are turned ON by the
FPGA during the configuration process. The FPGA INIT pin (N14) drives the INIT LED
(D5) buffer transistor (Q2). The FPGA DONE pin (M15) drives the DONE LED (D6) buffer
transistor (Q1). Table 3-28 lists the FPGA pin assignments.
Table 3-28:
Configuration INIT and DONE LED Pin Assignments
LED
FPGA_INIT
FPGA_DONE
Designation
D5 INIT
D6 DONE
FPGA Pin Number (1)
(FF1136 Package)
N14
M15
Notes:
1. These signals are connected to FPGA configuration bank 0. The FPGA reference voltage for this bank
is 2.5V. See the ML555 board schematics on the CD-ROM for additional information.
Virtex-5 FPGA ML555 Development Kit
UG201 (v1.4) March 10, 2008
73
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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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