Fujitsu D2529 PCI slot, Frequency, Description, in MHz, PCI, PCI-X, PCI Express interrupts

Features PCI(e) slots

PCI slots

The following table shows an overview of the PCI slots:

PCI slot	Bit	Frequency	Description
		in MHz
1			PCI e x4 slot
2			PCI e x4 slot
3			PCI e x4/x8 slot
4	64 Bit	133	64-Bit PCI-X slot
5			PCI e x4 slot
6			PCI e x4/x8 slot
7			PCI e x4 slot

Slot 3 and slot 6 are automatically used as x8 slots, if slot 2 respectivly slot 5 are not occupied.

PCI, PCI-X, PCI Express interrupts

Each device connected to a PCI bus or PCI Express can use up to four interrupt signals depending on the functionality.

PCI and PCI-X buses use four lines named INTA to INTD, typically connected to all devices on the bus in order to periodically balance interrupt load. An interrupt signal may thereby be used simultaneously by multiple devices (interrupt sharing).

PCI Express devices send their interrupts through messages. The interrupts are defined by the system design.

D2529 (TX300 S4) Technical Manual 21