Advantech AIMB-503, Руководство пользователя

Страница: 46 / 110

AIMB-503 User Manual 36
3.3.3 PCI Express Settings

Relaxed Ordering
Enables or disables PCIe device relaxed ordering of PCI Express traffic through
switches and the Root Complex.

Extended Tag
Enables or disables Extended Tag. If enabled allows device to use 8-bit tag field
in the Requester Transaction ID field.

No Snoop
Enables or disables the PCIe device No Snoop attribute of PCI Express traffic
Refer to the PCI Express 1.0 specification.

Maximum Payload
Sets the maximum data payload size that a PCI Express device may transmit
within a Transaction Layer Packet.

Maximum Read Request
Sets the maximum data payload size that a PCI Express device may request
within a Transaction Layer Packet.

ASPM Support
Configures Active State Power Management, which can power down a link to a
PCIe device even when the device is in a full power state. Forcing to L0s will
keep the links powered up at all times, regardless of device presence.

Extended Synch
Enabling this setting allows generation of extended synchronization patterns,
which may help to allow logic analyzers to achieve symbol lock before the link
changes power states and resumes communication.

Link Training Retry
Sets or disables the number of retry attempts software will take to retrain the link
if the first training attempt was unsuccessful.