Altera Arria V Avalon-MM Manual do Utilizador Página 55

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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, <n> = 1, 2, 4, or 8.
Signal Direction Description
tx_out[<n>-1:0] Output Transmit input. These signals are the serial outputs.
rx_in[<n>-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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