Altera 50G Interlaken MegaCore Function Manual do Utilizador Página 24
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50G Interlaken IP Core Parameter Settings
3
2015.05.04
UG-01140
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You customize the 50G Interlaken IP core by specifying parameters in the 50G Interlaken parameter
editor, which you access from the Quartus II IP Catalog.
This chapter describes the parameters and how they affect the behavior of the IP core. To customize your
50G Interlaken IP core, you can modify parameters to specify the following properties:
Meta Frame Length in Words on page 3-1
Transceiver Reference Clock Frequency on page 3-1
Number of Calendar Pages on page 3-2
TX Scrambler Seed on page 3-2
Transfer Mode Selection on page 3-2
Meta Frame Length in Words
The Meta frame length in words parameter specifies the length of the meta frame, in 64-bit (8-byte)
words. In the Interlaken specification, this parameter is called the MetaFrameLength parameter.
Smaller values for this parameter shorten the time to achieve lock. Larger values reduce overhead while
transferring data, after lock is achieved.
For simulation, you can set the Meta frame length in words parameter to the value of 128 for fast lane
locking. For hardware testing, Altera recommends that you set the Meta frame length in words
parameter to the value of 2048.
The default value of the Meta frame length in words parameter is 2048.
Transceiver Reference Clock Frequency
The Transceiver reference clock frequency parameter specifies the expected frequency of the
pll_ref_clk input clock.
If the actual frequency of the pll_ref_clk input clock does not match the value you specify for this
parameter, the design fails in both simulation and hardware.
The 50G Interlaken IP core supports the following pll_ref_clk frequencies: 156.25 MHz, 195.3125
MHz, 250 MHz, 312.5 MHz, 390.625 MHz, 500 MHz, and 625 MHz.
The default value of the Transceiver reference clock frequency parameter is 312.5 MHz.
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of its semiconductor products to current specifications in accordance with Altera's standard warranty, but reserves the right to make changes to any
products and services at any time without notice. Altera assumes no responsibility or liability arising out of the application or use of any information,
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9001:2008
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101 Innovation Drive, San Jose, CA 95134
- 101 Innovation Drive 1
- San Jose, CA 95134 1
- Contents 2
- About This MegaCore Function 3
- Device Family Support 6
- IP Core Verification 7
- Device Speed Grade Support 8
- Release Information 8
- Altera IP Core Release Notes 9
- OpenCore Plus IP Evaluation 10
- UG-01140 11
- 2015.05.04 11
- Related Information 12
- 10 variation 13
- Pin Assignments 15
- Send Feedback 16
- Altera Corporation 16
- Adding the External PLL 21
- 50G Interlaken IP Core 22
- Meta Frame Length in Words 24
- Number of Calendar Pages 25
- TX Scrambler Seed 25
- Transfer Mode Selection 25
- Functional Description 27
- Management Interface 28
- High Level Block Diagram 30
- IP Core Reset 31
- Interleaved and Packet Modes 33
- 50G Interlaken IP Core TX MAC 40
- 50G Interlaken IP Core TX PCS 40
- 50G Interlaken IP Core TX PMA 40
- 50G Interlaken IP Core RX PMA 45
- 50G Interlaken IP Core RX PCS 45
- 50G Interlaken IP Core RX MAC 45
- Signal Name Direction Width 47
- Description 47
- Device Dependent Signals 60
- Offset Name R/W Description 63
- Example Design 68
- Top Testbench 68
- Testbench Simulation Behavior 70
- Internal Serial Loopback Mode 72
- External Loopback Mode 72
- CRC32 Error Injection 78
- Advanced Parameter Settings 79
- Counter Reset Bits 80
- Include Temp Sense 80
- RXFIFO Address Width 80
- Use ATX or CMU PLL 82
- Lane Profile 82
- MegaCore Function 84
- Ethernet Traffic 89
- Additional Information 91
- How to Contact Altera 93
- Typographic Conventions 93
- Visual Cue Meaning 94
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