Power Good Leds; Connector J18 - Xilinx FMC XM105 User Manual

FMC XM105 Debug Card User Guide
UG537 (v1.2) September 24, 2010
Downloaded from Elcodis.com electronic components distributor

16. Power Good LEDS

Three power good LEDS are on the board with functions defined in
Table 1-18: Power Good LED Indicators
Power
Good Description
Indicator
DS5 Board power good
XM105 +12V input
DS6
power good
XM105 VADJ input
DS7
power good

17. Connector J18

This 2 x 1 position connector facilitates connection of the board signal PG_M2C on pin J17-
F1 to ground on the XM105. Boards listed in
FPGA input. Connection to ground is only used to signal power not good from the XM105 to
the board. There are no power supplies on this XM105. By default, the connector is left
open. See Xilinx board user guides and schematics for additional information.
• Shunt OFF = PG_M2C signal asserted on the board through pull-up resistor to V
(default). No connection to the XM105.
• Shunt ON = J17-F1 PG_M2C signal connected to GND. Power not good signaled to the
board.
This LED is driven by the signal PG_C2M output from the
board to the mezzanine connector on connector J17 pin
D1. Board power good is indicated when this LED is on.
Reference the Xilinx board schematics and user guides for
additional information on the power system.
+12V input voltage from FMC LPC pins J17-C34 and J17-
C37. The +12V power input is good when this LED is on.
VADJ input voltage on the FMC HPC VADJ pins from
the board power is good. Xilinx FMC-supported
platforms listed in
FMC HPC and FMC LPC connectors.
Table 1-1, page 8
www.xilinx.com
Board Technical Description
Table 1-18.
Controlled by...
Table 1-1, page 8 connect 2.5V to the
have pull-up resistors on this
CCO
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