Altera RapidIO II MegaCore Function - Manual (Page 39)

Chapter 3: Parameter Settings 3–9
Capability Registers Settings
August 2014 Altera Corporation RapidIO II MegaCore Function
User Guide
Port Number
Port number sets the PortNumber field of the Switch Port Information CAR. This
value is the number of the port from which the MAINTENANCE read operation accesses
this register.
Switch Route Table Destination ID Limit CAR
The Switch Route Table Destination ID Limit CAR is described in Table 6–30 on
page 6–31 .
Switch Route Table Destination ID Limit
Switch route table destination ID limit sets the Max_destID field of the Switch Route
Table Destination ID Limit CAR.
Data Streaming Information CAR
The Data Streaming Information CAR is described in Table 6–31 on page 6–31 .
Maximum PDU
Maximum PDU sets the MaxPDU field of the Data Streaming Information CAR.
Number of Segmentation Contexts
Number of segmentation contexts sets the SegSupport field of the Data Streaming
Information CAR.
Source Operations CAR
The Source operations CAR override parameter supports user input to the values of
all of the fields of the Source Operations CAR (
Table 6–28 on page 6–29 ). You can use
this parameter to specify that your RapidIO II IP core variation handles some specific
functionality through the Avalon-ST pass-through port.
The 32-bit default value of the Source Operations CAR is determined by the
functionality you enable in the RapidIO II IP core with other settings in the parameter
editor. For example, if you turn on Enable Maintenance module, the PORT_WRITE field
is set by default to the value of 1’b1. However, the actual reset value of the Source
Operations
CAR is the result of the bitwise exclusive-or operation applied to the
default values and the value you specify for the Source operations CAR override
parameter.
For example, by default, the Data Message field of this CAR is turned off. However,
you can set the value of the Source operations CAR override parameter to
32’h00000800 to override the default value of the Data Message field, to indicate that
user logic attached to the Avalon-ST pass-through interface supports data message
operations. The RapidIO II IP core supports reporting of data-message related errors
through the standard Error Management Extensions registers.