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Signal Name Direction Description
RxmByteEnable_<n>_o[<w>-1:0]
Output Byte enable for write data.
RXMBurstCount_<n>_o[6 or
5:0]
Output The burst count, measured in qwords, of the RX write or
read request. The width indicates the maximum data
that can be requested. The maximum data in a burst is
512 bytes.
RXMWaitRequest_<n>_o
Input Asserted by the external Avalon-MM slave to hold data
transfer.
RXMRead_<n>_o
Output Asserted by the core to request a read.
RXMReadData_<n>_o[<w>-1:0]
Input Read data returned from Avalon-MM slave in response
to a read request. This data is sent to the IP core through
the TX interface. <w> = 64 or 128 for the full-featured
IP core. <w> = 32 for the completer-only IP core.
RXMReadDataValid_<n>_i
Input Asserted by the system interconnect fabric to indicate
that the read data on is valid.
RxmIrq_<n>[<m>:0], <m>< 16
Input Indicates an interrupt request asserted from the system
interconnect fabric. This signal is only available when
the CRA port is enabled. Qsys-generated variations have
as many as 16 individual interrupt signals (<m>≤15). If
rxm_irq_<n>[<m>:0] is asserted on consecutive cycles
without the deassertion of all interrupt inputs, no MSI
message is sent for subsequent interrupts. To avoid
losing interrupts, software must ensure that all interrupt
sources are cleared for each MSI message received.
The following figure illustrates the RX master port propagating requests to the Application Layer and also
shows simultaneous, DMA read and write activity
4-4
RX Avalon-MM Master Signals
UG-01105_avmm
2014.12.15
Altera Corporation
Interfaces and Signal Descriptions
Send Feedback
- User Guide 1
- Datasheet 2
- Features 3
- Release Information 6
- Device Family Support 6
- Altera FPGA 7
- IP Core Verification 9
- Debug Features 9
- Recommended Speed Grades 10
- Hard IP for PCI Express 12
- Running Qsys 13
- Generating the Example Design 14
- Programming a Device 18
- Quartus II Programmer 19
- Parameter Settings 20
- Parameter Value Description 21
- Device Capabilities 23
- Error Reporting 24
- Link Capabilities 25
- MSI and MSI-X Capabilities 25
- Power Management 27
- Subscribe 31
- RX Avalon-MM Master Signals 33
- Clock Signals 38
- Reset Signals 38
- Signal Direction Description 39
- Hard IP Status 40
- IntxReq_i 44
- IntAck_o 44
- Hard IP Status Extension 46
- Field and Bit Map 54
- 0134678951 54
- Serial Interface Signals 55
- 9 Ch 18 Ch 56
- Variant Data CMU Clock 57
- PIPE Interface Signals 58
- Test Signals 62
- Registers 63
- Altera-Defined VSEC Registers 71
- CvP Registers 72
- Address Range Register 76
- Bit Name Access Description 77
- Bits Name Access Description 78
- PCI Express Mailbox Registers 79
- Avalon-MM Mailbox Registers 83
- Address Name Access 84
- Description 84
- Byte Offset 84
- Register Dir Description 84
- Sending a Write TLP 90
- Root Port TLP Data Registers 92
- Bits Register Description 95
- Reset and Clocks 98
- Example Design 99
- UG-01105_avmm 100
- 2014.12.15 100
- Clock Domains 102
- Data Rate Frequency 103
- Related Information 103
- Clock Summary 104
- Interrupts for Endpoints 105
- MSI/MSI‑X Support 107
- Qsys System 108
- Error Handling 109
- Physical Layer Errors 110
- Data Link Layer Errors 110
- Transaction Layer Errors 111
- Error Type Description 112
- Status Bit Conditions 115
- IP Core Architecture 117
- Hard IP for PCI Express 118
- Clocks and Reset 119
- Transceiver Reconfiguration 119
- Interrupts 119
- Data Link Layer 120
- Altera Corporation 121
- Send Feedback 121
- Physical Layer 122
- TX Packets 123
- Avalon‑MM Bridge TLPs 127
- Byte Enable Value Description 128
- PCI Express Avalon-MM Bridge 130
- RX Block 136
- Avalon-MM RX Master Block 136
- TX Block 137
- Interrupt Handler Block 137
- Design Implementation 139
- Making Pin Assignments 140
- Optional Features 141
- ECRC on the RX Path 142
- ECRC on the TX Path 143
- Enable PLL calibration 145
- Debugging 148
- Setting Up Simulation 149
- Use Third-Party PCIe Analyzer 150
- BIOS Enumeration Issues 151
- Address[31:2] 152
- Figure A-6: I/O Read Request 154
- 7 6 5 4 3 2 1 0 158
- Core Config 8 4 1 158
- Additional Information 160
- Date Version Changes Made 161
- How to Contact Altera 163
- Typographic Conventions 164
- Visual Cue Meaning 165
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