Intel Celeron Processor on 0.13 Micron Process in the 478-Pin Package Datasheet

32 Intel

Celeron

Processor on 0.13 Micron Process in the 478-Pin Package Datasheet

Electrical Specifications

2.14 Processor AC Timing Waveforms

The following figures are used in conjunction with the AC timing tables, Table 16 through

Table 21.

Note: For Figure 7 through Figure 16, the following apply:

1. All common clock AC timings for AGTL+ signals are referenced to the Crossing Voltage

CROSS

) of the BCLK[1:0] at rising edge of BCLK0. All common clock AGTL+ signal

timings are referenced at GTLREF at the processor core.

2. All source synchronous AC timings for AGTL+ signals are referenced to their associated

strobe (address or data) at GTLREF. Source synchronous data signals are referenced to the

falling edge of their associated data strobe. Source synchronous address signals are referenced

to the rising and falling edge of their associated address strobe. All source synchronous

AGTL+ signal timings are referenced at GTLREF at the processor core silicon.

3. All AC timings for AGTL+ strobe signals are referenced to BCLK[1:0] at V

CROSS

. All

AGTL+ strobe signal timings are referenced at GTLREF at the processor core silicon.

4. All AC timings for the TAP signals are referenced to the TCK signal at 0.5*VCC at the

processor pins. All TAP signal timings (TMS, TDI, etc) are referenced at 0.5*VCC at the

processor pins.

The circuit used to test the AC specifications is shown in Figure 6.

Table 22. ITPCLKOUT[1:0] AC Specifications

Parameter Min Typ Max Unit Figure Notes

1, 2

NOTES:

1. Unless otherwise noted, all specifications in this table apply to all processor frequencies.

2. These parameters are not tested and are based on design simulations.

T65: ITPCLKOUT Delay 400 560 ps

3. This delay is from rising edge of BCLK0 to the falling edge of ITPCLK0.

T66: Slew Rate 2 8 V/ns

T67: ITPCLKOUT[1:0] High Time 3.89 5 6.17 ns

T68: ITPCLKOUT[1:0] Low Time 3.89 5 6.17 ns

Figure 6. AC Test Circuit

420 mils, 50 Ω, 169 ps/in.

2.4 nH

1.2 pF

Rload = 50 Ω

AC Timings test measurements

made here.

VCC