Altera Arria V Avalon-MM Manual do Utilizador Página 42
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Signal Direction Description
int_status[3:0]
Output These signals drive legacy interrupts to the Application Layer as
follows:
• int_status[0]: interrupt signal A
• int_status[1]: interrupt signal B
• int_status[2]: interrupt signal C
• int_status[3]: interrupt signal D
ko_cpl_spc_data[11:0]
Output The Application Layer can use this signal to build circuitry to
prevent RX buffer overflow for completion data. Endpoints must
advertise infinite space for completion data; however, RX buffer
space is finite. ko_cpl_spc_data is a static signal that reflects the
total number of 16 byte completion data units that can be stored
in the completion RX buffer.
ko_cpl_spc_
header[7:0]
Output The Application Layer can use this signal to build circuitry to
prevent RX buffer overflow for completion headers. Endpoints
must advertise infinite space for completion headers; however,
RX buffer space is finite. ko_cpl_spc_header is a static signal
that indicates the total number of completion headers that can be
stored in the RX buffer.
l2_exit
Output L2 exit. This signal is active low and otherwise remains high. It is
asserted for one cycle (changing value from 1 to 0 and back to 1)
after the LTSSM transitions from l2.idle to detect. When this
pulse is asserted, the Application Layer should generate an
internal reset signal that is asserted for at least 32 cycles.
lane_act[3:0] Output Lane Active Mode: This signal indicates the number of lanes that
configured during link training. The following encodings are
defined:
• 4’b0001: 1 lane
• 4’b0010: 2 lanes
• 4’b0100: 4 lanes
• 4’b1000: 8 lanes
ltssmstate[4:0]
Output LTSSM state: The LTSSM state machine encoding defines the
following states:
• 00000: Detect.Quiet
• 00001: Detect.Active
• 00010: Polling.Active
• 00011: Polling.Compliance
• 00100: Polling.Configuration
• 00101: Polling.Speed
4-12
Hard IP Status
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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