Cmos Connectivity Checklist For 370-Pin Socket Processors; Tap Checklist For A 370-Pin Socket Processor - Intel 810A3 Design Manual

Table 8-2. CMOS Connectivity Checklist for 370-Pin Socket Processors
CPU Pin
A20M#
FERR#
FLUSH#
IERR#
IGNNE#
INIT#
LINT0/INTR
LINT1/NMI
PICD[1:0]
PREQ#
PWRGOOD
SLP#
SMI#
STPCLK#
THERMTRIP#
Table 8-3. TAP Checklist for a 370-Pin Socket Processor
CPU Pin
TCK
TDI
TDO
TMS
TRST#
PRDY#
NOTES:
1. The ITP connector is different than the one previously specified for other Intel IA-32 processors. It is the
female counterpart to the previously specified connector and is specifically for use with processors utilizing
1.5V CMOS TAP I/O signals.
2. The Intel
designed to work higher voltages and may damage the processor if they are connected to an Intel
III FC-PGA processor.
®
Intel 810A3 Chipset Design Guide
I/O
150 Ω pullup resistor to VCC
I
150 Ω pullup resistor to VCC
O
150 Ω pullup resistor to VCC
I
150 Ω pullup resistor to VCC
O
Connect (not used by chipset).
150 Ω pullup resistor to VCC
I
150 Ω pullup resistor to VCC
I
150 Ω pullup resistor to VCC
I
150 Ω pullup resistor to VCC
I
150 Ω pullup resistor to VCC
I/O
~200–330 Ω pullup resistor to VCC
O
150–330 Ω pull-up to 2.5V, output from the PWRGOOD logic.
I
150 Ω pull-up to VCC
I
150 Ω pull-up to VCC
I
150 Ω pull-up to VCC
I
150 Ω pullup resistor to VCC
O
No Connect.
I/O
I 1 KΩ pullup resistor to VCC
~200–330 Ω pullup resistor to VCC
I
150 Ω pullup resistor to VCC
O
I 1 KΩ pullup resistor to VCC
~680 Ω pulldown resistor to ground / Connect to ITP.
I
150 Ω pullup resistor to Vtt / 240 Ω series resistor to ITP.
I
® ®
Pentium III processor requires an ITP with a 1.5V tolerant buffer board. Previous ITPs are
Comments
/ Connect to ICH.
CMOS
/ Connect to ICH.
CMOS
(not used by chipset).
CMOS
if tied to custom logic or leave as No
CMOS
/ Connect to ICH.
CMOS
/ Connect to ICH & FWH Flash BIOS.
CMOS
/ Connect to ICH.
CMOS
/ Connect to ICH.
CMOS
/ Connect to ICH.
CMOS
/ Connect to ITP.
CMOS
/ Connect to ICH.
CMOS
/ Connect to ICH.
CMOS
/ Connect to ICH.
CMOS
and connect to power off logic, or leave as
CMOS
3,4
Comments
/ 47 Ω series resistor to ITP.
CMOS
/ Connect to ITP.
CMOS
/ Connect to ITP.
CMOS
/ 47 Ω series resistor to ITP.
CMOS
Design Checklist
® ®
Pentium
8-3