Questions tagged [pcie]
PCIe or PCI Express is a high-speed serial computer bus that offers higher speeds and a lower pin count than earlier standards such as PCI that it is designed to replace. Questions should relate to PCIe design issues not general consumer PC / peripheral issues.
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Feeding data stream to FPGA using PCIe [closed]
I am trying to use PCIe with ultrascale+ device and feed the fpga with data stream and send it to another device using PCIe over SFP+ optical cable. However, I don't know how to feed data to the fpga (...
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PCIe PRST pin functionality at M.2 connector (B) with SATA device (reboot detection)
M.2 connector type (key B) support PCIe ×2, SATA, USB 2.0 and 3.0, audio, UIM, HSIC, SSIC, I2C and SMBus.
I want to use SATA interface with my device, but I need to detect the reboot of the host ...
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M.2 Key E - can it host an NVMe SSD?
I found an SBC which has an M.2 socket for WiFi cards. It's keying is E.
I couldn't decide whether I can plug an M.2 NVMe SSD into this socket.
Key E normally has PCIe x2, which is not as fast as ...
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Designing M.2 socket for SSD
I'm designing a card adaptor which converts from M.2 Key E type to M.2 Key M type (to insert an NVMe SSD into a port designed originally for Wifi cards).
I found some reference design for the M.2 KeyM ...
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PCIe digest explanation
In the PCIe standard they wrote the TLP messages may have digest section.
What is the digest of a TLP message described in the PCIe standard?
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PCIe implementation
I was reading about the PCIe stadard, it was mentioned about PCIe PHY, Switched, RootComplex and Bridges that make the PCIe fabric.
I'm trying to connect the dots between the physical hardware and the ...
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CPU to Switch SGMII port with PCIE 2.5Gb
I can't seem to find a 2.5 Gbps Ethernet controller that could be a bridge between the SGMII+ port and PCIe.
this is what I want to do:
I don't want to use PHY (from the copper 2.5G to 2.5G SGMII)
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Can Thunderbolt be used to power the host device?
Could the Thunderbolt interface be used to provide power to the PCIe host device? In this case, this would be a battery-powered mobile device, connecting to a range of peripherals. Thunderbolt here ...
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Is there a way to power a GPU only by external supply?
Actually I don't think so, because I think different components of the GPU are powered by only one of the two sources.
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Multiple PCIe devices in a single M.2 slot
I have a M.2 M-keyed slot on my laptop, and multiple M.2 PCI-e devices that I'd like to use at the same time. I've been looking for a M.2 switch or splitter of sorts but couldn't find anything, so I ...
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Multi-channels DMA Subsystem for PCI Express
Say i have a PCIe Gen2 x4 link running in a DMA subsystem. May I know when do we need multi-channels DMA configuration? For example, FPGA vendor like Xilinx offer up to 4-read & 4-write data ...
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Origin and underlying sense of the term "Posted" in PCIe
When PCI Express replaced the operation of reading directly from a PCI peripheral card over a bus, directly addressing its I/O ports, or performing a configuration cycle on it directly, with instead a ...
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PCIe mode in chip-to-chip communication
In my understanding, the most common PCIe usage is in computer systems which involves a processor host communicating with various endpoints through the PCIe tree topology. In this scenario, we will ...
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Connecting 1.8V USB and PCIe to 3.3V system
I'm working with a google coral module (ASIC) that has both PCIe gen2 1x and USB 2.0. From the datasheet (https://coral.ai/docs/module/datasheet/) the I/O levels are 1.8V maximum. The problem then ...
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Is it bad to load one rail of a power supply vastly more than the other?
I am trying to modify a Delta DPS-400AB-17 server 1U power supply to support a desktop motherboard and graphics card. The power supply has an 8 pin 12V EPS connector attached to a 21A 12V (252W) rail. ...
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