Altera PHY IP Core Podręcznik Użytkownika Strona 552
- Strona / 626
- Spis treści
- BOOKMARKI
Oceniono. / 5. Na podstawie oceny klientów
Linear Feedback Shift Register (LFSR), the next pattern can be determined from the previous pattern.
When the PRBS checker receives a portion of the received pattern, it can generate the next sequence of
bits to verify the next data sequence received is correct.
The PRBS generator and checker in Arria 10 devices are hardened blocks shared between the Standard
and Enhanced datapaths through the PCS. Therefore, they have only one set of control signals and
registers. The data lines from the various PCSs and shared PRBS generator are MUXed before they are
sent to the PMA. When the PRBS generator is enabled, the data on the PRBS data lines is selected to be
sent to the PMA. Either the data from the PCS or the data generated from the PRBS generator can be sent
to the PMA at any time.
The PRBS generator and checker can be configured for two widths of the PCS-PMA interface: 10 bits and
64 bits. PRBS9 is available in both 10-bit and 64-bit PCS-PMA widths. All other PRBS patterns are
available in 64-bit PCS-PMA width only. The PRBS generator and checker patterns can only be used
when the PCS-PMA interface width is configured to 10 bits or 64 bits. For any other PCS-PMA width, to
ensure the correct clocks are provided to the PRBS blocks you must first reconfigure the width to either 10
or 64 bits before using the PRBS generator and checker. For example, when the transceiver is configured
to a 20-bit PCS/PMA interface, you must first reconfigure the PCS-PMA width to 10 bits before setting up
the PRBS generator and checker. The PRBS setup will not automatically change the PCS/PMA width.
The 10-bit PCS-PMA width for PRBS9 is available for lower frequency testing. You can configure PRBS9
in either 10-bit or 64-bit width, based on the data rate. The FPGA fabric-PCS interface must run in the
recommended speed range of the FPGA core. Therefore, you must configure PRBS9 in one of the two bit
width modes, so that the FPGA fabric-PCS interface parallel clock runs in this operating range.
Examples:
• If you want to use PRBS9 and the data rate is 2.5 Gbps, you can use the PRBS9 in 10-bit mode (PCS-
PMA width = 10). In this case, the parallel clock frequency = Data rate / PCS-PMA width = 2500
Mbps/10 = 250 MHz.
• If you want to use PRBS9 and the data rate is 6.4 Gbps, you can use the PRBS9 in 64-bit mode (PCS-
PMA width = 64). In this case, the parallel clock frequency = Data rate / PCS-PMA width = 6400
Mbps/64 = 100 MHz.
• If you want to use PRBS9 and the data rate is 12.5 Gbps, you can use the PRBS9 in 64 bit mode (PCS-
PMA width = 64). In this case, the parallel clock frequency = Data rate / PCS-PMA width = 12500
Mbps/64 = 195.3125 MHz.
Table 6-31: PRBS Supported Polynomials and Data Widths
Use the 10-bit mode of PRBS9 when the data rate is lower than 3 Gbps.
Pattern Polynomial 64-Bit 10-Bit
PRBS7 G(x) = 1+ x
6
+ x
7
X
PRBS9 G(x) = 1+ x
5
+ x
9
X X
PRBS15 G(x) = 1+ x
14
+ x
15
X
PRBS23 G(x) = 1+ x
18
+ x
23
X
PRBS31 G(x) = 1+ x
28
+ x
31
X
To generate a pattern of 1s and 0s, use the Arria 10 square wave generator and specify a length of consecu‐
tive 1s and 0s. The square wave generator in Arria 10 devices is a hardened block shared between the
Standard and Enhanced datapaths similar to the PRBS generator and checker. The square wave generator
only supports the 64-bit PCS-PMA width. There are no control and status signals available when using
the square wave generator.
6-48
Using PRBS and Square Wave Data Pattern Generator and Checker
UG-01143
2015.05.11
Altera Corporation
Reconfiguration Interface and Dynamic Reconfiguration
Send Feedback
- 101 Innovation Drive 1
- San Jose, CA 95134 1
- Contents 2
- Device Transceiver Layout 9
- UG-01143 10
- 2015.05.11 10
- Transceiver Bank Architecture 22
- The GX Transceiver Channel 26
- The GT Transceiver Channel 27
- Receiver PMA 28
- DeserializerCDR 28
- Advanced Transmit (ATX) PLL 29
- Fractional PLL (fPLL) 29
- Calibration 30
- • Calibration on page 7-1 31
- • Arria 10 Device Datasheet 31
- Transceiver Design Flow 33
- Configure the PHY IP Core 35
- Generate the PHY IP Core 36
- Select the PLL IP Core 36
- Configure the PLL IP Core 38
- Generate the PLL IP Core 39
- Create Reconfiguration Logic 39
- Connect Datapath 40
- Compile the Design 40
- Verify Design Functionality 41
- Configuration 42
- Protocol Preset 42
- Transceiver Configuration 52
- PMA Parameters 54
- Parameters Value Description 58
- Enhanced PCS Parameters 60
- Standard PCS Parameters 70
- PCS Direct 77
- PMA Ports 80
- Name Direction Clock Domain 84
- Enhanced PCS Ports 85
- Name Bit Functionality 94
- Standard PCS Ports 99
- Name Direction Clock 105
- Description 105
- Related Information 105
- IP Core File Locations 106
- Interlaken 107
- Altera Corporation 108
- Send Feedback 108
- Reset Controller 118
- Design Example 121
- Parameter Value 122
- Ethernet 128
- Rate Match FIFO for GbE 134
- Parameters Value 139
- Transceivers 148
- Parameter Range 151
- Idle Deleted 155
- Before Deletion 155
- After Deletion 155
- 10GBASE-KR PHY IP Core 156
- Name Range Description 162
- Name Value Description 163
- 10GBASE-KR PHY Interfaces 164
- Avalon-MM Register Interface 170
- Creating a 10GBASE-KR Design 192
- Simulation Support 194
- Item Description 195
- Native PHY 197
- Clock and Reset Interfaces 198
- 1G/10GbE PHY Interfaces 206
- Register Definitions 214
- Bit R/W Name Description 215
- Addr Bit R/W Name Description 233
- Creating a 1G/10GbE Design 239
- Design Guidelines 240
- Channel Placement Guidelines 240
- XAUI PHY IP Core 242
- XAUI Supported Features 245
- XAUI PHY Release Information 247
- Device Family Support 248
- Parameterizing the XAUI PHY 249
- XAUI PHY Ports 251
- XAUI PHY Interfaces 251
- Soft PCS 253
- Acronyms 258
- PCI Express (PIPE) 259
- Supported PIPE Features 260
- Gen1/Gen2 Features 261
- Power States Description 262
- Gen3 Features 266
- PCIe Gen3 Capability 267
- Mode Enabled 267
- Gen1 Gen2 Gen3 267
- • PIPE Design Example 275
- Gen1 PIPE Gen2 PIPE Gen3 PIPE 277
- Native PHY IP Ports for PIPE 285
- Figure 2-92: x4 Configuration 294
- Figure 2-93: x8 Configuration 295
- TX PLL Selection for CPRI 300
- Auto-Negotiation 300
- Supported Features for CPRI 301
- Other Protocols 310
- TX Bit Slip 320
- TX Polarity Inversion 320
- RX Bit Slip 320
- RX Polarity Inversion 321
- Word Aligner Manual Mode 323
- RX Bit Reversal 328
- RX Byte Reversal 329
- Parameter Value Description 330
- 8B/10B Encoder and Decoder 333
- 8B/10B TX Disparity Control 334
- TX Bit Reversal 336
- TX Byte Reversal 336
- Arria 10 GT Channel Usage 344
- Transceiver PHY IP 345
- NativeLink Simulation Flow 354
- Define Control Signals Using 356
- Custom Simulation Flow 359
- How to Generate Scripts 361
- Simulator Simulation File Use 362
- PLLs and Clock Networks 364
- ATX PLL IP Core 369
- Parameter Range Description 370
- Parameters Range Description 378
- Instantiating CMU PLL IP Core 386
- CMU PLL IP Core 387
- Input Reference Clock Sources 390
- Receiver Input Pins 392
- Transmitter Clock Network 393
- GT Clock Lines 398
- Clock Generation Block 399
- Transmitter Standard PCS 404
- Transmitter PMA 404
- Clock Generation Block (CGB) 404
- Receiver Standard PCS 406
- Channel Bonding 407
- PMA and PCS Bonding 408
- Skew Calculations 410
- Using PLLs and Clock Networks 412
- Bonded Configurations 416
- Implementing PLL Cascading 420
- Mix and Match Example 422
- When Is Reset Required? 427
- How Do I Reset? 427
- Recommended Reset Sequence 428
- min 20 ns 429
- Status Signals 433
- Control Signals 433
- Arria 10 PMA Architecture 448
- Transmitter Buffer 449
- 85Ω, 100Ω, OFF 450
- Receiver 451
- Receiver Buffer 452
- High Data Rate Mode 454
- Receiver Equalization Modes 459
- Channel PLL 461
- CDR Lock Mode 462
- Loopback 463
- Transmitter Datapath 466
- Interlaken Frame Generator 468
- Interlaken CRC-32 Generator 468
- 0 0 066676767 469
- Pattern Generators 470
- S0 S1 S4 S5 S8 471
- PRBS Output 471
- Scrambler 472
- (tx_clkout) 474
- KR FEC Blocks 475
- Receiver Datapath 476
- Descrambler 477
- Interlaken Frame Synchronizer 477
- PRBS Error 478
- PRBS datain 478
- Interlaken CRC-32 Checker 479
- Enhanced PCS RX FIFO 479
- Case Word Input Output 482
- RX KR FEC Blocks 483
- Byte Serializer 485
- 8B/10B Encoder 487
- RX Polarity Inversion Feature 496
- Rate Match FIFO 496
- 8B/10B Decoder 497
- Byte Deserializer 499
- PIPE Interface 503
- Clock Data Recovery Control 504
- Reconfiguration 505
- Reconfiguration Features 507
- Configuration Files 510
- Bit Position Description 511
- Instance 512
- Arbitration 515
- Direct Reconfiguration Flow 517
- Maximum Pre-Emphasis Settings 518
- Address Bit Values 521
- Switching Transmitter PLL 523
- Switching Reference Clocks 524
- ATX Reference Clock Switching 525
- Ports and Parameters 528
- On-Die Instrumentation 535
- Address Bits Read / 536
- Feature Description 536
- Start Pattern Checker 543
- Embedded Debug Features 544
- Control and Status Registers 545
- PRBS Soft Accumulators 548
- ODI Acceleration Logic 549
- Unsupported Features 562
- Calibration Registers 564
- ATX PLL Calibration Registers 566
- Capability Registers 566
- Power-up Calibration 567
- User Recalibration 569
- Calibration Example 570
- Fractional PLL Recalibration 571
- CDR/CMU PLL Recalibration 571
- PMA Recalibration 571
- Check Calibration Status 574
- Analog Parameter Settings 575
- XCVR_A10_RX_LINK 578
- XCVR_A10_RX_TERM_SEL 579
- XCVR_VCCR_VCCT_VOLTAGE - RX 580
- CTLE Settings 580
- XCVR_A10_RX_ONE_STAGE_ENABLE 582
- VGA Settings 583
- XCVR_A10_RX_ADP_DFE_FXTAP 584
- XCVR_A10_TX_LINK 585
- XCVR_A10_TX_COMPENSATION_EN 586
- XCVR_VCCR_VCCT_VOLTAGE - TX 587
- XCVR_A10_TX_SLEW_RATE_CTRL 587
- Value Description 589
- Transmitter VOD Settings 593
- XCVR_A10_REFCLK_TERM_TRISTATE 594
- LVDS TRISTATE_ON/TRISTATE_OFF 595
- Assign To 595
- Reference clock pin 595
- Subscribe 596
- Chapter Document 607
- Changes Made 607
- Date Version Changes 626
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