Dynamic Engineering PCIe8LXMCX2CB Gebruikershandleiding - Pagina 6

Blader online of download pdf Gebruikershandleiding voor {categorie_naam} Dynamic Engineering PCIe8LXMCX2CB. Dynamic Engineering PCIe8LXMCX2CB 20 pagina's. Pcie 8 lane 2 position xmc compatible carrier. connector bus version

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Headers and TestPoints

and

J11

are used to select the VPWR source for position 0 and 1 respectively.

When the Shunt closes 1-2 – 12V is selected. With 2-3 closed 5V is selected. FET's

are used to provide a low impedance path from the power supplies to VPWR for each

position. Options are in place on the PCB to allow hardwired selections for clients who

prefer a fixed voltage. The headers are not installed when the fixed voltage option is in

place. With pin 2 open VPWR will be open.

J12, 13, and

are used to select the bezel grounding option. 1-2 selects AC coupled,

2-3 selects DC coupled and open is open. J12 = PCIe Bezel. J13 = Slot 0. J23 = Slot

is an optional header for SMB connection. Pin 1 is data and pin 2 is clock. Both are

pulled up. 3

party tools can be used to see the "innards" of the switch. Usually not

needed but handy if you are doing development or want to talk through the switch to the

XMC positions.

TP1

is an optional JTAG header used to connect to XMC 0. The pin definitions are in

the silk. 1: 3.3V, 2: GND, 3: TMS, 4: TDO, 5: TDI, 6: TCK, 7: TRST

J19

control the voltage on 33,67 of P2 and P7 respectively when the SCSI

connector options are selected. 1-2 selects 3.3V and 2-3 selects ground on those pins.

The shunt and traces are rated for 1A. Not fuse protected.

J20

control the voltage on 34,68 of P2 and P7 respectively when the SCSI

connector options are selected. 1-2 selects 3.3V and 2-3 selects ground on those pins.

The shunt and traces are rated for 1A. Not fuse protected.

P3, 4, 6

are optional power connectors to allow for added 12V power to be used by the

PCIe8LXMCX2. The PCIe gold fingers allow for about 60W of power to be consumed

by the board across all XMC voltages including power supply losses. In many cases

the power budget is more than sufficient. If your XMC's require more power please

request one of the optional power connectors [discrete wire, 4 wire standard PC vert or

horizontal] to increase the 12V available. Both 12V entry points are diode coupled to

prevent the current back-feeding when an external or other supply is added.

P3: 1-2 = gnd, 3-4 = 12V. P4,6: 1= 12V, 2-3 = gnd.

Embedded Solutions

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