Specifications

Intel
®
810E2 Chipset Platform
R
Design Guide
159
Table 43. CMOS Connectivity Checklist for 370-Pin Socket Processors
Processor Pin I/O Recommendations
A20M# I Connect to ICH2.
FERR# O 150 Ω pull-up resistor to VCC
CMOS
/ Connect to ICH2.
FLUSH# I 150 Ω pull-up resistor to VCC
CMOS
(not used by chipset).
IERR# O 150 Ω pull-up resistor to VCC
CMOS
if tied to custom logic or leave as No Connect (not
used by chipset).
IGNNE# I Connect to ICH2.
INIT# I Connect to ICH2 & FWH Flash BIOS.
LINT0/INTR I Connect to ICH2.
LINT1/NMI I Connect to ICH2.
PICD[1:0] I/O 150 Ω pull-up resistor to VCC
CMOS
/ Connect to ICH2.
PREQ# O ~200–330 Ω pull-up resistor to VCC
CMOS
/ Connect to ITP.
PWRGOOD I 150–330 Ω pull-up to 2.5V, output from the PWRGOOD logic.
SLP# I Connect to ICH2.
SMI# I Connect to ICH2.
STPCLK# I Connect to ICH2.
THERMTRIP# O 150 Ω pull-up resistor to VCC
CMOS
and connect to power off logic, or leave as No
Connect.
Table 44. TAP Checklist for a 370-Pin Socket Processor
Processor Pin I/O Recommendations
TCK I 1 kΩ pull-up resistor to VCC
CMOS
/ 47 Ω series resistor to ITP.
TDI I ~200–330 Ω pull-up resistor to VCC
CMOS
/ Connect to ITP.
TDO O 150 Ω pull-up resistor to VCC
CMOS
/ Connect to ITP.
TMS I 1 kΩ pull-up resistor to VCC
CMOS
/ 47 Ω series resistor to ITP.
TRST# I ~680 Ω pull-down resistor to ground / Connect to ITP.
PRDY# I 150 Ω pull-up resistor to Vtt / 240 Ω series resistor to ITP.
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 Pentium
®
III processor requires an ITP with a 1.5V tolerant buffer board. Previous ITPs are designed to
work higher voltages and may damage the processor if they are connected to an
Pentium III processor.