Altera HardCopy II Clock Uncertainty Calculator Bedienungsanleitung PDF herunterladen (Seite 26)

2–12 Altera Corporation

HardCopy II Clock Uncertainty Calculator User Guide

Running the Clock Uncertainty Calculator Flow

4. Create the clock uncertainty constraint on a SDC.

For example, set_clock_uncertainty –from

altpll0:PLL0|altpll"altpll_component|_clk0 \

-to altpll0:PLL0|altpll"altpll_component|_clk1 \-setup 0.100

set_clock_uncertainty –from

altpll0:PLL0|altpll"altpll_component|_clk0 \-to

altpll0:PLL0|altpll"altpll_component|_clk1 \-hold 0.050.

Figure 2–12. Clock Transfer Report and Clock Uncertainty Values

For more information about the clock transfer types, refer to Chapter 1,

About HardCopy II Clock Uncertainty Calculator. In addition, there are

examples of clock transfer types in Chapter A, Clock Transfer Examples

of this user guide.

1 2 ... 21 22 23 24 25 26 27 28 29 30 31 ... 61 62

User Guide 1
UG-01015-1.0 2
Contents 3
About this User Guide 5
Typographic 6
Conventions 6
Chapter 1. About HardCopy II 7
General 8
Description 8
PLL Extraction 9
Clock Transfer Report 10
Intra-Clock Transfer 11
Inter-Clock Transfer 11
I/O Transfer 12
Instructions 12
Clock Uncertainty Calculator 13
1–8 Altera Corporation 14
General Description 14
Chapter 2. Launching the 15
HardCopy II Clock 15
Uncertainty Calculator 15
System and 16
Software 16
Requirements 16
Running the 17
Uncertainty 17
Calculator Flow 17
2–4 Altera Corporation 18
Altera Corporation 2–5 19
2–6 Altera Corporation 20
Altera Corporation 2–7 21
2–8 Altera Corporation 22
Altera Corporation 2–9 23
2–10 Altera Corporation 24
Altera Corporation 2–11 25
2–12 Altera Corporation 26
Chapter 3. Design Case 27
Exceptions 27
Various Clock 28
Structures 28
Clock Divider 29
Ripple Clock 29
Multiple Clock Networks 30
Multi-Cycle Clock 30
Altera Corporation 3–5 31
Design Case Exceptions 31
Clock Transfer Type 32
Setup CU (ps) Hold CU (ps) 32
Intra-Clock 32
Inter-Clock 32
I/O Interface 32
Appendix A. Clock Transfer 33
Examples 33
A–2 Altera Corporation 34
Intra-Clock Domain with PLL 34
11 — 11 — 34
Domain without 35
Domain with 36
Altera Corporation A–5 37
A–6 Altera Corporation 38
Inter-Clock Domain with PLL 38
Altera Corporation A–7 39
A–8 Altera Corporation 40
12 — 0 — 40
Altera Corporation A–9 41
Altera Corporation A–13 45
Cascaded PLLs 46
Altera Corporation A–15 47
Altera Corporation A–17 49
A–18 Altera Corporation 50
Altera Corporation A–19 51
A–20 Altera Corporation 52
Altera Corporation A–21 53
A–22 Altera Corporation 54
12 3 12 7 54
Altera Corporation A–23 55
A–24 Altera Corporation 56
0 — 10 11 56
Altera Corporation A–25 57
12 2 0 — 57
A–26 Altera Corporation 58
10 — 4 8 58
Altera Corporation A–27 59
A–28 Altera Corporation 60
A–30 Altera Corporation 62
10 2 0 — 62

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