IPR-PCIE/4 Altera, IPR-PCIE/4 Datasheet - Page 324
IPR-PCIE/4
Manufacturer Part Number
IPR-PCIE/4
Description
IP CORE Renewal Of IP-PCIE/4
Manufacturer
Altera
Type
MegaCorer
Specifications of IPR-PCIE/4
Software Application
IP CORE, Interface And Protocols, PCI
Supported Families
Arria GX, Cyclone II, HardCopy II, Stratix II
Core Architecture
FPGA
Core Sub-architecture
Arria, Cyclone, Stratix
Rohs Compliant
NA
Function
PCI Express Compiler, x4 Link Width
License
Renewal License
Lead Free Status / RoHS Status
na
Lead Free Status / RoHS Status
na
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B–18
Figure B–13. TX Transfer for A Single DWORD Write
Figure B–14. TX State Machine Is Busy with the Preceding Transaction Layer Packet Waveform
PCI Express Compiler User Guide
Descriptor
Data
Signals
Signals
Descriptor
Signals
Data
Signals
tx_desc[127:0]
tx_data[63:32]
tx_data[31:0]
Figure B–13
Transaction Layer Not Ready to Accept Packet
In this example, the application transmits a 64-bit memory read transaction of six
DWORDs. Address bit 2 is set to 0. Refer to
Data transmission cannot begin if the IP core’s transaction layer state machine is still
busy transmitting the previous packet, as is the case in this example.
tx_ack
tx_req
tx_dfr
tx_ws
tx_err
tx_dv
clk
tx_desc[127:0]
tx_data[63:32]
tx_data[31:0]
1
shows the IP core transmitting a memory write of one DWORD.
tx_ack
tx_req
tx_ws
tx_err
tx_dfr
tx_dv
2
clk
1
3
MEMWR32
2
4
DW0
3
MEMWR64
5
Figure
4
B–14.
6
5
December 2010 Altera Corporation
7
6
7
Descriptor/Data Interface
8
9
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