Intel Itanium 2 Processor Manual do Utilizador descarregar pdf (Página 28)

28 Datasheet

Electrical Specifications

2.5.6 Wired-OR Signals

System bus signals must meet certain overshoot and undershoot requirements. The maximum

absolute overshoot voltage is 1.8V and the minimum absolute undershoot voltage is

–0.6V. The system bus wired-OR signals (BINIT#, HIT#, HITM#, BNR#, TND#, BERR#) have

the same absolute overshoot and undershoot specification as the Source Synchronous AGTL+

Signals, but they have different time dependent overshoot/undershoot requirements. Please refer to

Table 2-18 through Table 2-21 for the wired-OR time dependant overshoot/undershoot limits.

Table 2-17. Itanium

2 Processors (1.66 GHz) Source Synchronous AGTL+ Signal Group

Time-Dependent Overshoot/Undershoot Tolerance for 667 MHz System Bus

Absolute

Maximum (V)

Pulse Duration (ns)

Over-

shoot

Under-

shoot

AF = 1

AF = 0.75 AF = 0.5 AF = 0.25 AF = 0.1 AF = 0.05 AF = 0.01

1.8 –0.6 0.0050 0.0054 0.0086 0.0172 0.0423 0.0858 0.4297

1.75 –0.55 0.0129 0.0172 0.0258 0.0517 0.1292 0.2585 1.2953

1.7 –0.5 0.0387 0.0516 0.0775 0.1553 0.3882 0.7748 1.5

1.65 –0.45 0.1158 0.1544 0.2311 0.4629 1.1564 1.5 1.5

1.6 –0.4 0.3429 0.4562 0.6845 1.3728 1.5 1.5 1.5

1.55 –0.35 1.0065 1.3411 1.5 1.5 1.5 1.5 1.5

1.5 –0.3 1.5 1.5 1.5 1.5 1.5 1.5 1.5

1.45 –0.25 1.5 1.5 1.5 1.5 1.5 1.5 1.5

NOTES:

1. Activity Factor = 1 means signal toggles every 3 ns.

Table 2-18. Itanium

2 Processors (900 MHz, 1.0 GHz, 1.3 GHz, 1.4 GHz, 1.5 GHz/6 MB) Wired-

OR Signal Group (BINIT#, HIT#, HITM#, BNR#, TND#, BERR#)

Overshoot/Undershoot Tolerance for 400 MHz System Bus

NOTES:

1. Wired-OR signals operate at 200 MHz.

Absolute

Maximum (V)

Pulse Duration (ns)

Over-

shoot

Under-

shoot

AF = 1

2. Activity factor = 1 means signal toggles every 10ns.

AF = 0.75 AF = 0.5 AF = 0.25 AF = 0.1 AF = 0.05 AF = 0.01

1.8 –0.6 0.0493 0.06576 0.0985 0.1968 0.4923 0.9852 4.9228

1.75 –0.55 0.1485 0.1977 0.2966 0.5933 1.4834 2.9659 5

1.7 –0.5 0.4444 0.5932 0.8898 1.7798 4.4448 5 5

1.65 –0.45 1.3290 1.7670 2.6529 5 5 5 5

1.6 –0.4 3.9270 555555

1.55–0.355555555

1.5–0.35555555

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 107 108

Comentários a estes Manuais

Sem comentários

Intel Itanium 2 Processor Manual do Utilizador Página 28

Comentários a estes Manuais

Manuais e produtos relacionados com Hardware Intel Itanium 2 Processor