Intel Pentium 4 User Manual

I/O Controller Hub 2
R
138 Intel
®
Pentium
®
4 Processor / Intel
®
850 Chipset Family Platform Design Guide
9.1.4 Secondary IDE Connector Requirements
Figure 90. Connection Requirements for Secondary IDE Connector
SDD[15:0]
SDA[2:0]
SDCS1#,SDCS3#
SDIOR#
SDIOW#
SDDREQ
SDDACK#
IDE_secondary_conn_require
PDIAG# / CBLID#
CSEL
* Due to ringing, PCIRST# must be buffered.
3.3 V
3.3 V
4.7 kΩ
8.2–10 kΩ
10 kΩ
PCIRST#*
SIORDY
IRQ15
GPIOy
ICH2
Secondary IDE Connector
22–47 Ω
• 22 Ω – 47 Ω series resistors are required on RESET#. The correct value should be determined
for each unique motherboard design, based on signal quality.
• An 8.2 kΩ to 10 kΩ pull-up resistor is required on IRQ14 and IRQ15 to VCC3_3.
• A 4.7 kΩ pull-up resistor to VCC3_3 is required on PIORDY and SIORDY
• Series resistors can be placed on the control and data line to improve signal quality. The
resistors are place as close to the connector as possible. Values are determined for each
unique motherboard design.

Intel Pentium 4 Specifications

General

Architecture	x86
Core Count	1
Microarchitecture	NetBurst
Manufacturer	Intel
Core Names	Willamette, Northwood, Prescott, Cedar Mill
Virtualization Technology	No
Release Date	November 20, 2000
Clock Speed	1.3 GHz to 3.8 GHz
FSB Speed	400 MHz to 1066 MHz
Socket	Socket 423, Socket 478, LGA 775
Introduced	2000
Product Line	Pentium
Front Side Bus	400 MHz to 1066 MHz
Hyper-Threading	Yes (Prescott and later)
64-bit Support	Yes (Prescott and later)
Instruction Set	MMX, SSE, SSE2, SSE3
Discontinued	2008
Process Technology	180 nm, 130 nm, 90 nm, 65 nm
L2 Cache	256 KB, 512 KB, 1 MB, 2 MB
Lithography	180 nm, 130 nm, 90 nm, 65 nm
L1 Cache	8 KB