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Visible to Intel only — GUID: sam1394017931697
Ixiasoft
Visible to Intel only — GUID: sam1394017931697
Ixiasoft
2.3.2.5. Programmable Output Slew Rate Control
- Fast slew rate—provides high-speed transitions for high-performance systems.
- Slow slew rate—reduces system noise and crosstalk but adds a nominal delay to the rising and falling edges.
I/O Standard | IOH / IOL Current Strength Supporting Slew Rate Control |
---|---|
3.0 V LVTTL/3.0 V LVCMOS | 16, 12, 8 |
2.5 V LVTTL/2.5 V LVCMOS | 16, 12, 8 |
1.8 V LVTTL/1.8 V LVCMOS | 16, 12, 8 |
1.5 V LVCMOS | 16, 12, 10, 8 |
1.2 V LVCMOS | 12, 10, 8 |
SSTL-2 Class I | 12, 8 |
SSTL-2 Class II | 16 |
SSTL-18 Class I | 12, 10, 8 |
SSTL-18 Class II | 16, 12 |
SSTL-15 Class I | 12, 10, 8 |
SSTL-15 Class II | 16 |
1.8 V HSTL Class I | 12, 10, 8 |
1.8 V HSTL Class II | 16 |
1.5 V HSTL Class I | 12, 10, 8 |
1.5 V HSTL Class II | 16 |
1.2 V HSTL Class I | 12, 10, 8 |
1.2 V HSTL Class II | 14 |
You can specify the slew rate on a pin-by-pin basis because each I/O pin contains a slew rate control. The slew rate control affects both the rising and falling edges.