Intel Pentium 4 User Manual

Platform Clock Routing Guidelines
R
Intel
®
Pentium
®
4 Processor / Intel
®
850 Chipset Family Platform Design Guide 47
4.2.2 133 MHz Operation – Intel
®
82850E Chipset
The BCLK[1:0] frequency should be set for 133 MHz operation for the 82850E chipset. This is
accomplished with a 1 kΩ pull-up to VCC3_CLK on the CK-00 SEL100/133 input. The correct
frequency select circuitry is show in the Figure below.
Figure 17. BCLK [1:0] Frequency Select for 133 MHz System Bus Operation
RDRAM
Sys Bus Freq/2
(50MHz or
66MHz)
BSEL0 (133/100)
MULT0 MULT1
CK00 Clock Chip
ICH
DMCG
CPU
GPOx
GPOx
GPI
1K ohm
VCC3_CLK
SEL100/133
REFCLK
3VMREF_B
BSEL1
No Connect

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