1052 - <p>How to set LatticeECP3 FPGA IO in temporary tri-state when another partner device in line card doesn't support hot swap?<br></p><br>
The LatticeECP3 doesn't have a dedicated control signal to put the FPGA IO to tri-state. There are cases that some designers might want to have the LatticeECP3 FPGA IO tri-stated when a new line card is being inserted as some partner devices in these line-cards might not support hot swap. The solution is that the designer can force a temporary pull-down the PROGRAMN pin to achieve tri-state IOs, and then later the LatticeECP3 can be re-activated (via reconfiguration) after the line-card is reliably inserted and stabilized in the system.
Related Articles
1400 - Platform Manager 2 & L-ASC10: What is Hot Swap? And how does a Power Manager device do it?
Hot Swapping refers to inserting or removing a circuit card from a powered backplane. The circuit card presents an almost dead short to the supplies on the backplane with the discharged capacitors (bulk filtering, bypass, and hold-up). This dead ...
1605 - Does default IO behavior change from device family to device family?<BR>
The IO behavior of each Lattice device family could be unique. Some of the device families support pull and bus keeper circuitry for each individual pin, some support such function on a global basis, while others have different pull condition for ...
1476 - Power Manager II: Can I use an ispPAC-POWR1220 for -48V hot-swap control?
Although most of our applications literature shows the ispPAC-POWR607 in -48V hot-swap applications, it is possible to also use an ispPAC-POWR1220. It is generally not preferable to the ispPAC-POWR607 for the following reasons: It is physically ...
5760 - [Platform Manager II]: In the Hot Swap sheet in Platform Designer, when Rs is set to 10 milliohms, the Fast Shutdown Limit can reach 20 A with max. However, in the Current sheet, when Rs is also set to 10 milliohms, the Fast Trip Point can reach 50
1. Fast Shutdown limit is also related to the Imax setting. 2. Fast shutdown Limit can also go up to 50A if Imax is set to 50A and above even with the same 10millohm resistor value. 3. Fast Shut Down Limit uses the IMON_F input which allows a ...
6398 - CertusPro-NX: Does High Performance IO supports hot socketing?
The Certus-Pro NX HP IOs does not support hot socketing.