Error reporting, Error reporting –5 – Altera Arria V Hard IP for PCI Express User Manual
Page 57
Chapter 4: Parameter Settings for the Arria V Hard IP for PCI Express
4–5
Port Functions
December 2013
Altera Corporation
Arria V Hard IP for PCI Express
User Guide
Error Reporting
Table 4–3
describes the Advanced Error Reporting (AER) and ECRC parameters.
These parameters are supported only in single function mode.
Completion
timeout range
(continued)
The following encodings are used to specify the range:
■
0001 Range A
■
0010 Range B
■
0011 Ranges A and B
■
0110 Ranges B and C
■
0111 Ranges A, B, and C
■
1110 Ranges B, C and D
■
1111 Ranges A, B, C, and D
All other values are reserved. Altera recommends that the
completion timeout mechanism expire in no less than 10 ms.
Implement
completion
timeout disable
On/Off
On
Sets the value of the Completion Timeout field of the
Device
Control 2
register (
) which is For PCI Express
version 2.0 and higher Endpoints, this option must be On. The
timeout range is selectable. When On, the core supports the
completion timeout disable mechanism via the PCI Express
Device Control Register 2
. The Application Layer logic
must implement the actual completion timeout mechanism
for the required ranges.
Table 4–2. Capabilities Registers for Function
Parameter
Possible
Values
Default
Value
Description
–
Parameter
Value
Default
Value
Description
Advanced error
reporting (AER)
On/Off
Off
When On, enables the AER capability.
ECRC checking
On/Off
Off
When On, enables ECRC checking. Sets the read-only value of the
ECRC check capable bit in the
Advanced Error Capabilities
and Control Register
. This parameter requires you to enable the
AER capability.
ECRC generation
On/Off
Off
When On, enables ECRC generation capability. Sets the read-only
value of the ECRC generation capable bit in the
Advanced Error
Capabilities and Control Register
. This parameter requires
you to enable the AER capability.
ECRC forwarding
On/Off
Off
When On, enables ECRC forwarding to the Application Layer. On the
Avalon-ST RX path, the incoming TLP contains the ECRC dword
(1)
and the
TD
bit is set if an ECRC exists. On the transmit the TLP from
the Application Layer must contain the ECRC dword and have the
TD
bit set.
Note to
Table 4–3
:
(1) Throughout The Arria V Hard IP for PCI Express User Guide, the terms word, dword and qword have the same meaning that they have in the
. A word is 16 bits, a dword is 32 bits, and a qword is 64 bits.