Kontron COMe-cPV2(v1.0) - Manual (Page 91)

Kontron microETXexpress-PV User’s Guide
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87
PCI Express Configuration
Feature Option Description
Relaxed
Ordering
Auto
Enabled
Disabled
Applicable and set with
AtomicOp Requests, where it
affects the ordering of both
the requests and their
associated completions
Maximum
Payload Size
Auto
128 bytes
256 bytes
512 bytes
1024 bytes
2048 bytes
4096 bytes
Sets maximum TLP payload
size for the function
As a receiver, the function
must handle TLPs as large as
the set value.
As a transmitter, the
function must not generate
TLPs exceeding the set
value.
Extended Tag
Field
Auto
Enabled
Disabled
Enables function to use an
8-bit tag field as a
requester
If the bit is clear, the
function is restricted to a
5-bit tag field.
No Snoop Auto
Enabled
Disabled
Applicable and set with
AtomicOp Requests, but
atomicity must be guaranteed
regardless of the No Snoop
attribute value
Maximum Read
Request Size
Auto
128 bytes
Sets the maximum Read
Request size for the