pga370 ETC-unknow, pga370 Datasheet - Page 47

• Manufacturer Part Number: pga370
• Description: Mpu Pentium Iii 64-bit 0.18um 700mhz 370-pin Fcpga
• Manufacturer: ETC-unknow

3.2
Datasheet
Figure 16. BCLK, PICCLK Generic Clock Waveform at the Processor Pins
Table 23. AGTL+ Signal Groups Ringback Tolerance Specifications at the Processor
AGTL+ / AGTL Signal Quality Specifications and
Measurement Guidelines
Many scenarios have been simulated to generate a set of AGTL+ layout guidelines which are
available in the appropriate platform design guide. Refer to the Intel
Developer's Manual (Order Number 243502) for the AGTL+/AGTL buffer specification.
Table 23
signal quality at the processor pins.
The Pentium III processor for the PGA370 socket maximum allowable overshoot and undershoot
specifications for a given duration of time are detailed in
shows the AGTL+/AGTL ringback tolerance and
waveform.
Pins
NOTES:
2. The rising and falling edge ringback voltage specified is the minimum (rising) or maximum (falling) absolute
1. Unless otherwise noted, all specifications in this table apply to all Pentium III processors frequencies.
2. Specifications are for the edge rate of 0.3 - 0.8V/ns. See
3. All values specified by design characterization.
4. Please see
5. Ringback between V
: Minimum Time at High
: Duration of Squarewave Ringback
: Amplitude of Ringback
: Final Settling Voltage
: Overshoot
voltage the BCLK/PICCLK signal can dip back to after passing the V
This specification is an absolute value.
flight time measurements to be adjusted as described in the Intel AGTL+ Specifications (Intel
Developers Manual). Ringback below V
1, 2, 3
provides the AGTL+ signal quality specifications for the processor for use in simulating
Table 25
T# Parameter
Pentium
V2
V1
REF
for maximum allowable overshoot.
+ 100 mV and V
®
III Processor for the PGA370 Socket at 500 MHz to 1.13 GHz
REF
REF
+ 100 mV or above V
+ 200 mV or V
±200
0.50
Min
100
200
N/A
Figure 18
Figure 17
V3
V5
REF
Table 25
shows the overshoot/undershoot
- 200 mV and V
Unit
mV
mV
mV
REF
ns
ns
for the generic waveform.
IH
- 100 mV is not supported.
V3
(rising) or V
through
®
Pentium
Figure
REF
Table
17
17
17
17
17
IL
V4
(falling) voltage limits.
- 100 mVs requires the
®
II Processor
27.
®
Figure 17
Pentium
5, 6, 7, 8
Notes
4, 8
8
®
II
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