Mobile Pentium III Processor in BGA2 and Micro-PGA2 Packages Datasheet
Intel Corporation
23
Table 16. GTL+ Signal Groups AC Specifications
1
RTT =
56 internally terminated to VCCT; VREF = 2/3VCCT; load = 0 pF;
TJ = 0°C to 100°C; VCC = 1.35V ±100 mV or 1.60V ±115 mV; V CCT = 1.50V ±115 mV
Symbol
Parameter
Min
Max
Unit
Figure
Notes
T7
GTL+ Output Valid Delay
0.2
2.7
ns
Figure 8
T8
GTL+ Input Setup Time
1.2
ns
Figure 9
Notes 2, 3
T9
GTL+ Input Hold Time
0.80
ns
Figure 9
Note 4
T10
RESET# Pulse Width
1
ms
Figure 10,
Figure 11
Note 5
NOTES:
1.
All AC timings for GTL+ signals are referenced to the BCLK rising edge at 1.25V. All GTL+ signals are referenced at
VREF.
2.
RESET# can be asserted (active) asynchronously, but must be de-asserted synchronously.
3.
Specification is for a minimum 0.40V swing.
4.
Specification is for a maximum 1.0V swing.
5.
After VCC, VCCT, and BCLK become stable and PWRGOOD is asserted.
Table 17. CMOS and Open-drain Signal Groups AC Specifications
1, 2
TJ = 0°C to 100°C; VCC = 1.35V ±100 mV or 1.60V ±115 mV; V CCT = 1.50V ±115 mV
Symbol Parameter
Min Max Unit
Figure
Notes
T14
1.5V Input Pulse Width, except PWRGOOD and
LINT[1:0]
2
BCLKs Figure 8
Active and
Inactive states
T14B
LINT[1:0] Input Pulse Width
6
BCLKs Figure 8
Note 3
T15
PWRGOOD Inactive Pulse Width
10
BCLKs Figure 11 Notes 4, 5
NOTES:
1.
All AC timings for CMOS and Open-drain signals are referenced to the BCLK rising edge at 1.25V. All CMOS and Open-
drain signals are referenced at 0.75V.
2.
Minimum output pulse width on CMOS outputs is 2 BCLKs.
3.
This specification only applies when the APIC is enabled and the LINT1 or LINT0 signal is configured as an edge
triggered interrupt with fixed delivery, otherwise specification T14 applies.
4.
When driven inactive, or after VCC, VCCT and BCLK become stable. PWRGOOD must remain below VIL25,max from Table 13
until all the voltage planes meet the voltage tolerance specifications in Table 9 and BCLK has met the BCLK AC
specifications in Table 14 for at least 10 clock cycles. PWRGOOD must rise glitch-free and monotonically to 2.5V.
5.
If the BCLK Settling Time specification (T60) can be guaranteed at power-on reset then the PWRGOOD Inactive Pulse
Width specification (T15) is waived and BCLK may start after PWRGOOD is asserted. PWRGOOD must still remain
below VIL25,maxuntil all the voltage planes meet the voltage tolerance specifications.