Altera IP Compiler for PCI Express Uživatelský manuál stáhnout pdf (Strana 294)

16–6 Chapter 16: Qsys Design Example

Adding the Remaining Components to the Qsys System

IP Compiler for PCI Express User Guide August 2014 Altera Corporation

1 The values displayed for Posted header credit, Posted data credit,

Non-posted header credit, Completion header credit, and Completion

data credit are read-only. The values are computed based on the values set

for Maximum payload size and RX buffer credit allocation – performance

for received requests.

7. Under the Avalon-MM Settings heading, specify the settings in Table 16–6.

8. Under the Address Translation heading, specify the settings in Table 16–7.

You can ignore the Address Translation Table Contents, as they are valid only for

the Fixed translation table configuration.

9. Click Finish to add the IP Compiler for PCI Express component pcie_hard_ip_0 to

your Qsys system.

1 Your system is not yet complete, so you can ignore any error messages generated by

Qsys at this stage.

Adding the Remaining Components to the Qsys System

This section describes adding the DMA controller and on-chip memory to your Qsys

system.

1. To add the DMA Controller component to your system, from the System Contents

tab, under Bridges and Adapters in the DMA folder, double-click the DMA

Controller component. This component contains read and write master ports and

a control port slave.

2. In the DMA Controller parameter editor, specify the settings in Table 16–8.

Table 16–6. Avalon-MM Settings

Parameter Value

Peripheral Mode Requester/Completer

Control Register Access (CRA) Avalon slave port Turn this option on

Auto Enable PCIe Interrupt (enabled at power-on) Turn this option off

Table 16–7. Address Translation Settings

Parameter Value

Address Translation Table Configuration Dynamic translation table

Number of address pages 2

Size of address pages 1 MByte - 20 bits

Table 16–8. DMA Controller Parameters

Parameter Value

Width of the DMA length register 13

Enable burst transfers Turn this option on

Maximum burst size 128

1 2 ... 289 290 291 292 293 294 295 296 297 298 299 ... 371 372

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Altera IP Compiler for PCI Express Uživatelský manuál Strana 294