manuais Achronix Speedster22i SerDes

Achronix Speedster22i SerDes Manual do Utilizador (113 páginas)

Marca: Achronix | Categoria: Hardware de computador | Tamanho: 2.78 MB |

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Speedster22i SerDes

1

User Guide

1

Table of Contents

2

4 UG028, July 1, 2014

4

List of Figures

5

List of Tables

6

Overview

7

Major standards supported

9

10 UG028, July 1, 2014

10

SerDes Placement

11

SerDes Architecture Overview

12

1. Common

13

3. Digital PMA (DPMA)

14

PCS Self Test Logic

16

18 UG028, July 1, 2014

18

Interface Encapsulation

20

8b/10b Encoder

20

Running Disparity

20

22 UG028, July 1, 2014

22

Polarity Bit Reversal (PBR)

23

Symbol Alignment

23

Modes of Operation

24

Manual Mode:

24

Bit Slip Mode:

24

Automatic Mode:

24

Deskew FIFO

25

Functional Description

26

Auto Mode:

26

Symbol slip mode:

27

28 UG028, July 1, 2014

28

EFIFO Operation

29

30 UG028, July 1, 2014

30

8b/10b Decoder

31

Bit Slider

31

PCS Self Test Checker

32

PCS Interface

33

PIPE Interface

34

Clocking

36

Debug and Test

38

PMA loopback modes:

39

PCS loopback modes:

39

PMA Test Pattern Generator

40

PMA Test Pattern Checker

40

PCS Test Pattern Generator

40

PRBS Generator

40

PCS Test Pattern Checker

41

Latency

42

44 UG028, July 1, 2014

44

Configurations Supported

45

46 UG028, July 1, 2014

46

48 UG028, July 1, 2014

48

Single-Lane Serdes Wrapper

50

52 UG028, July 1, 2014

52

Overview Section:

53

Entry field

54

Purpose

54

Available Options

54

Choice made

54

56 UG028, July 1, 2014

56

Section on PMA Settings:

57

58 UG028, July 1, 2014

58

RX PMA Equalization

59

RX PMA PLL

60

TX PMA Driver

62

TX PMA PLL

62

Section on PCS Settings:

63

RX PCS Settings

64

RX PCS Symbol Alignment

66

TX PCS Settings

68

70 UG028, July 1, 2014

70

Files Generated by ACE-GUI

71

Design and Wrapper Files

72

Sequence

74

76 UG028, July 1, 2014

76

Placement of SerDes

77

Timing Constraints

78

Design Guidelines

80

Figure 37: Clock Region View

82

84 UG028, July 1, 2014

84

Wide Bus

86

Design Tips

87

88 UG028, July 1, 2014

88

90 UG028, July 1, 2014

90

92 UG028, July 1, 2014

92

Design Bypassing PCS:

93

Modification – 1 (ACE GUI):

94

96 UG028, July 1, 2014

96

ACX_SERDES_SBUS_IF Module

99

General signals:

100

SerDes signals:

100

Parallel Interface signals:

100

UG028, July 1, 2014

101

Pass-through signals:

102

Loopback Modes

102

SerDes signals

102

Control signals

102

SerDes Registers

103

Electrical Specifications

104

Transmitter

105

106 UG028, July 1, 2014

106

Receiver

108

Eye Diagram

110

Reference Clock

112

Revision History

113

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