Embedded Solutions
Page 60 of 71
PCIe5IP LED’s
The PCIe5IP has eighteen LED’s. All the LED’s are on the upper/top edge of the
PCIe5IP board. The voltage within range monitor LEDs and USER LEDs are located at
the top center of the board and the ACK[4:0] LED’s are located on the top right corner.
Relative to the front top of the board the LED’s are oriented as follows:
-12.0V
PCIe5IP LED Layout
12.0V
5.0V
3.3V
LED0
LED6
LED7
1.2V
ACK0
ACK3
ACK4
The ACK[4:0] LED’s assert when an ACK[4:0]* is asserted on that channels IP bus.
“Blinking logic” is used to allow users to see when a single ACK* assertion occurs.
The 1.2V, 3.3V, 5.0V, 12.0V, and -12.0V LED’s are associated with their own
independent voltage monitoring circuits which accurately detect if any of the board’s
voltages are out of range. One LED for each power monitoring circuit, if the LED is on
the voltage is in range, if the LED is off the voltage is out of range.
The eight (8) user controllable LED's are user programmable with one of sixteen
possible sources to provide a variety of status. The default setting provides link status at
power up. When link-up occurs properly after power up LED3 through LED0 will light.
