Altera Arria V Avalon-MM - Manual (Page 55)

Bit(s) Field Description
[6:4]
multiple message
enable
This field indicates permitted values for MSI signals. For example,
if “100” is written to this field 16 MSI signals are allocated.
• 3’b000: 1 MSI allocated
• 3’b001: 2 MSI allocated
• 3’b010: 4 MSI allocated
• 3’b011: 8 MSI allocated
• 3’b100: 16 MSI allocated
• 3’b101: 32 MSI allocated
• 3’b110: Reserved
• 3’b111: Reserved
[3:1]
multiple message
capable
This field is read by system software to determine the number of
requested MSI messages.
• 3’b000: 1 MSI requested
• 3’b001: 2 MSI requested
• 3’b010: 4 MSI requested
• 3’b011: 8 MSI requested
• 3’b100: 16 MSI requested
• 3’b101: 32 MSI requested
• 3’b110: Reserved
[0]
MSI Enable
If set to 0, this component is not permitted to use MSI.
Related Information
• PCI Express Base Specification 2.1 or 3.0
• PCI Local Bus Specification, Rev. 3.0
Serial Interface Signals
Table 4-14: Serial Interface Signals
In the following table, = 1, 2, 4, or 8.
Signal Direction Description
tx_out[-1:0]
Output Transmit input. These signals are the serial outputs.
rx_in[-1:0]
Input Receive input. These signals are the serial inputs.
Refer to Pin-out Files for Altera Devices for pin-out tables for all Altera devices in .pdf, .txt, and .xls
formats.
UG-01105_avmm
2014.12.15
Serial Interface Signals 4-25
Interfaces and Signal Descriptions Altera Corporation
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