Networking Silicon — GD82559ER
Table 24. Measure and Test Condition Parameters
Vstep (rising edge) | 0.285VCC | 0.325VCC | V | Min Delay | |
0.475VCC | V | Max Delay | |||
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Vstep (falling edge) | 0.615VCC | 0.475VCC | V | Min Delay | |
0.325VCC | V | Max Delay | |||
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Vmax | 0.4VCC | 0.4VCC | V |
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Input Signal Edge | 1 | 1 | V/ns |
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Rate |
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NOTE: Input test is done with 0.1VCC overdrive. Vmax specifies the maximum
| Symbol | Parameter | Min | Max | Units | Notes |
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T14 | tval | PCI CLK to Signal Valid Delay | 2 | 11 | ns | 1, 2, 4 |
T15 | tval(ptp) | PCI CLK to Signal Valid Delay (point- | 2 | 12 | ns | 1, 2, 4 |
T16 | ton | Float to Active Delay | 2 |
| ns | 1 |
T17 | toff | Active to Float Delay |
| 28 | ns | 1 |
T18 | tsu | Input Setup Time to CLK | 7 |
| ns | 4, 5 |
T19 | tsu(ptp) | PCI Input Setup Time to CLK | 10 |
| ns | 4, 5 |
point) |
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T20 | th | Input Hold Time from CLK | 0 |
| ns | 6 |
T21 | trst | Reset Active Time After Power Stable | 1 |
| ms | 6 |
T22 | PCI Reset Active Time After CLK | 100 |
| μs | 6 | |
Stable |
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T23 | Reset Active to Output Float Delay |
| 40 | ns | 6, 7 |
NOTES:
1.Timing measurement conditions are illustrated in Figure 27.
2.PCI minimum times are specified with loads as detailed in the PCI Bus Specification, Revision 2.1, Section 4.2.3.2.
3.n a PCI environment, REQ# and GNT# are
4.Timing measurement conditions are illustrated in Figure 28.
5.RST# is asserted and
6.All PCI interface output drivers are floated when RST# is active.
The 82559ER is designed to support up to 150 nanoseconds of Flash access time. The VPP signal in the Flash implementation should be connected permanently to 12 V. Thus, writing to the Flash is controlled only by the FLWE# pin.
Table 26 provides the timing parameters for the Flash interface signals. The timing parameters are illustrated in Figure 29.
Datasheet | 79 |