Electronic Components Datasheet Search
  English  ▼

X  

Preview PDF HTML

641 Datasheet(PDF) 28 Page - Intel Corporation

Part # 641
Description  Intel Pentium 4 Processor
PDF  106 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  INTEL [Intel Corporation]
Direct Link  http://www.intel.com
Logo INTEL - Intel Corporation

641 Datasheet(HTML) 28 Page - Intel Corporation

Back Button 641 Datasheet HTML 24Page - Intel Corporation 641 Datasheet HTML 25Page - Intel Corporation 641 Datasheet HTML 26Page - Intel Corporation 641 Datasheet HTML 27Page - Intel Corporation 641 Datasheet HTML 28Page - Intel Corporation 641 Datasheet HTML 29Page - Intel Corporation 641 Datasheet HTML 30Page - Intel Corporation 641 Datasheet HTML 31Page - Intel Corporation 641 Datasheet HTML 32Page - Intel Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 28 / 106 page
background image
Electrical Specifications
28
Datasheet
2.6.3.1
GTL+ Front Side Bus Specifications
In most cases, termination resistors are not required as these are integrated into the
processor silicon. See Table 8 for details on which GTL+ signals do not include on-die
termination.
Valid high and low levels are determined by the input buffers by comparing with a
reference voltage called GTLREF. Table 16 lists the GTLREF specifications. The GTL+
reference voltage (GTLREF) should be generated on the system board using high
precision voltage divider circuits.
Table 16.
GTL+ Bus Voltage Definitions
Symbol
Parameter
Min
Typ
Max
Units Notes1
NOTES:
1. Unless otherwise noted, all specifications in this table apply to all processor frequencies.
GTLREF_PU
GTLREF pull up resistor
124 * 0.99
124
124 * 1.01
Ω
2
2.
GTLREF is to be generated from VTT by a voltage divider of 1% resistors (one divider for each
GTLREF land).
GTLREF_PD
GTLREF pull down resistor
210 * 0.99
210
210 * 1.01
Ω
2
RPULLUP
On die pull-up for
BOOTSELECT signal
500
—
5000
Ω
3
3. These pull-ups are to VTT.
RTT
60 Ω Platform Termination
Resistance
51
60
66
Ω
4
4. RTT is the on-die termination resistance measured at VTT/2 of the GTL+ output driver. The IMPSEL pin is used
to select a 50
Ω or 60 Ω buffer and RTT value.
50 Ω Platform Termination
Resistance
39
50
55
Ω
4
COMP[1:0]
60 Ω Platform Termination
COMP Resistance
59.8
60.4
61
Ω
5
5. COMP resistance must be provided on the system board with 1% resistors. COMP[1:0] resistors are to VSS.
COMP[5:4] resistors are to VTT.
50 Ω Platform Termination
COMP Resistance
49.9 * 0.99
49.9
49.9 * 1.01
Ω
5
COMP[5:4]
60 Ω Platform Termination
COMP Resistance
59.8
60.4
61
Ω
5
50 Ω Platform Termination
COMP Resistance
49.9 * 0.99
49.9
49.9 * 1.01
Ω
5



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100  ...More


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com