Altera Arria V Avalon-ST - Manual (Page 78)

Register Width Direction Description
cfg_tcvcmap 24 Output Configuration traffic class (TC)/virtual channel
(VC) mapping. The Application Layer uses this
signal to generate a TLP mapped to the appropriate
channel based on the traffic class of the packet.
•
cfg_tcvcmap[2:0]
: Mapping for TC0 (always 0)
.
•
cfg_tcvcmap[5:3]
: Mapping for TC1.
•
cfg_tcvcmap[8:6]
: Mapping for TC2.
•
cfg_tcvcmap[11:9]
: Mapping for TC3.
•
cfg_tcvcmap[14:12]
: Mapping for TC4.
•
cfg_tcvcmap[17:15]
: Mapping for TC5.
•
cfg_tcvcmap[20:18]
: Mapping for TC6.
•
cfg_tcvcmap[23:21]
: Mapping for TC7.
cfg_msi_data 16 Output
cfg_msi_data[15:0]
is message data for MSI.
cfg_busdev 13 Output Bus/Device Number captured by or programmed in
the Hard IP.
Figure 4-29: Configuration MSI Control Status Register
Field and Bit Map
0 1 3 4 6 7 8 9 5 1
reserved
mask
capability
64-bit
address
capability
multiple message enable multiple message capable
MSI
enable
Table 4-15: Configuration MSI Control Status Register Field Descriptions
Bit(s) Field Description
[15:9]
Reserved
N/A
[8]
mask capability
Per-vector masking capable. This bit is hardwired to 0 because the
function does not support the optional MSI per-vector masking
using the
Mask_Bits
and
Pending_Bits
registers defined in the
PCI Local Bus Specification. Per-vector masking can be
implemented using Application Layer registers.
[7]
64-bit address
capability
64-bit address capable.
• 1: function capable of sending a 64-bit message address
• 0: function not capable of sending a 64-bit message address
2014.12.15
Configuration Space Register Access 4-41
Interfaces and Signal Descriptions Altera Corporation
Send Feedback