Intel SL2YM Datasheet download pdf (Page 18)

Pentium

II Processor at 350 MHz, 400 MHz, and 450 MHz

18 Datasheet

NOTES:

1. These resistor values are recommended for system implementations using open-drain CMOS buffers.

2. ~150

Ω

resistors are expected for these signals. This value may vary by system and should be correlated with the output

drive characteristics of the devices generating the input signals. Other approximate values are recommended for proper

operation with the Pentium

II processor Logic Analyzer Interface.

TRST# must be

ulled to

round via a 680

Ω

resistor or driven low at

ower on with the assertion of RESET#

(see

Table 19).

4. 1K

−

10K

Ω

pullup to 2.0 V (V

CORE

) or, if 2.5 V ramps after core, pull up TESTHI to 2.5V (V

2.5

) with a 100 k

Ω

resistor.

The groups and the signals contained within each group are shown in Table 3. Refer to Section 7.0

for descriptions of these signals.

Table 2. Recommended Pull-up Resistor Values (Approximate) for CMOS Signals

1, 2, 3

Recommended Resistor

Value (A

roximate) CMOS Si

nal

150

Ω

TDI, TDO, TMS, PICD[0], PICD[1]

150

Ω

– 220

Ω

FERR#, IERR#, THERMTRIP#

150

Ω

– 330

Ω

A20M#, IGNNE#, INIT#, LINT[1]/NMI, LINT[0]/INTR, PWRGOOD, SLP#, PREQ#

410

Ω

STPCLK#, SMI#

500

Ω

FLUSH#

Ω

–100K

Ω

TESTHI

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 83 84

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Intel SL2YM Datasheet Page 18

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