AMX DESIGN XPRESS V 1.5 - PROGRAMMER GUIDE Guia do Utilizador Página 106

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7–8 Chapter 7: IP Core Interfaces
Cyclone V Hard IP for PCI Express
Cyclone V Hard IP for PCI Express December 2013 Altera Corporation
User Guide
rx_st_bar
8O
component
specific
The decoded BAR bits for the TLP. Valid for
MRd
,
MWr
,
IOWR
, and
IORD
TLPs; ignored for the completion or message TLPs. Valid
during the cycle in which
rx_st_sop
is asserted. Figure 7–8
illustrates the timing of this signal for 64-bit data. Figure 7–11
illustrates the timing of this signal for 128-bit data.
The following encodings are defined for Endpoints:
Bit 0: BAR 0
Bit 1: BAR 1
Bit 2: Bar 2
Bit 3: Bar 3
Bit 4: Bar 4
Bit 5: Bar 5
Bit 6: Expansion ROM
Bit 7: Reserved
The following encodings are defined for Root Ports:
Bit 0: BAR 0
Bit 1: BAR 1
Bit 2: Primary Bus number
Bit 3: Secondary Bus number
Bit 4: Secondary Bus number to Subordinate Bus number
window
Bit 5: I/O window
Bit 6: Non-Prefetchable window
Bit 7: Prefetchable window
Table 7–3. 64- or 128-Bit Avalon-ST RX Datapath (Part 3 of 4)
Signal Width Dir
Avalon-ST
Type
Description
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