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PROASIC3E Scheda tecnica(PDF) 17 Page - Actel Corporation |
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PROASIC3E Scheda tecnica(HTML) 17 Page - Actel Corporation |
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17 / 37 page  I/O Structures in IGLOOe and Pro ASIC3E Devices v1.4 17 Table 11 • Hot-Swap Level 3 Description Hot-swap while bus idle Power Applied to Device Yes Bus State Held idle (no ongoing I/O processes during insertion/removal) Card Ground Connection Reset must be maintained for 1 ms before, during, and after insertion/removal. Device Circuitry Connected to Bus Pins Must remain glitch-free during power-up or power-down Example Application Board bus shared with card bus is "frozen," and there is no toggling activity on the bus. It is critical that the logic states set on the bus signal not be disturbed during card insertion/removal. Compliance of IGLOO and ProASIC3 Devices 30 k gate devices, all IGLOOe/ProASIC3E devices: Compliant with two levels of staging (first: GND; second: all other pins) Other IGLOO/ProASIC3 devices: Compliant: Option A – Two levels of staging (first: GND; second: all other pins) together with bus switch on the I/Os Option B – Three levels of staging (first: GND; second: supplies; third: all other pins) Table 12 • Hot-Swap Level 4 Description Hot-swap on an active bus Power Applied to Device Yes Bus State Bus may have active I/O processes ongoing, but device being inserted or removed must be idle. Card Ground Connection Reset must be maintained for 1 ms before, during, and after insertion/removal. Device Circuitry Connected to Bus Pins Must remain glitch-free during power-up or power-down Example Application There is activity on the system bus, and it is critical that the logic states set on the bus signal not be disturbed during card insertion/removal. Compliance of IGLOO and ProASIC3 Devices 30 k gate devices, all IGLOOe/ProASIC3E devices: Compliant with two levels of staging (first: GND; second: all other pins) Other IGLOO/ProASIC3 devices: Compliant: Option A – Two levels of staging (first: GND; second: all other pins) together with bus switch on the I/Os Option B – Three levels of staging (first: GND; second: supplies; third: all other pins) |
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