Teledyne-lecroy PETrainer Scripting Language Reference Manual Manuel d'utilisateur télécharger pdf (Page 86)

Teledyne LeCroy PETrainer Scripting Language

16.2 Send Command

A Send command defines a sequence of high-performance packets to send once, a number of times, or

repeatedly. Send commands are allowed only in the Setup command section of a FastTransmit block. A

FastTransmit block can have up to 32 Send commands.

Note: Currently, Send commands are the only commands allowed in the Setup section of FastTransmit

blocks.

The Send command is similar to the Packet=TLP command. The difference is that the Send command

specifically sends memory transactions, which send MRd32/64 or MWr32/64 TLPs at the highest possible

rate. Also, the Send command omits definition of some low-level TLP fields, because they are set

automatically during transmission.

The Send command contains parameters to specify creation of a TLP set or sets:

Parameter Values

Default

Value

Comment

Snoop

0:1

(Default: NoSnoop)

Bit 4 of byte 2 in the TLP header:

0 = hardware enforced cache coherency is

expected.

1 = hardware enforced cache coherency is

not expected.

Ordering

0:1

(Default: Relaxed)

Bit 5 of byte 2 of TLP header:

0 = PCI Strongly Ordered Model.

1 = PCI-X Relaxed Ordering Model.

Length

0:1023

Length of data payload in DWORDs. If not

specified, this field is 1 for all read/write requests.

For a length of 1024, set Length to 0

(because 0 means 1024).

RequesterID

(XX:XX:X) or

direct value

Bytes 4-5 of the TLP Header for

Memory TLP packets.

This parameter can be set in the following format:

(BusNumber:DeviceNumber:FunctionNumber)

Count

0:255

Repeats the memory transaction the number of

times specified in a row within the currently

executing loop of the FastTransmit block.

LoopCount

0:255

Repeats this command the number of times

specified, within the entire FastTransmit block,

which loops through commands.

LoopCount indicates up to which loop increment

this command repeats. For example:

for(i = 0; i < 255; i++)

{

if(i < this LoopCount)

repeat this Send command

if(i < another LoopCount)

repeat another Send command

etc.

}

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