DataSheetWiki


ICS9250-22 fiches techniques PDF

Integrated Circuit Systems - Frequency Generator & Integrated Buffers for Celeron & PII/III

Numéro de référence ICS9250-22
Description Frequency Generator & Integrated Buffers for Celeron & PII/III
Fabricant Integrated Circuit Systems 
Logo Integrated Circuit Systems 





1 Page

No Preview Available !





ICS9250-22 fiche technique
Integrated
Circuit
Systems, Inc.
ICS9250-22
Frequency Generator for P IV™
Recommended Application:
P IV Chipset Support
Output Features:
• 4 Differential CPU Clock Pairs @ 3.3V
• 2 - 3V MREF clocks for memory reference seeds,
(separate single ended but 180 degrees out of phase)
• 4 - 66MHz reference output
• 10 - 3V 33MHz PCI clocks
• 2 - 48MHz clocks
• 2 - 14.318 reference output
Features:
• Support power management: Power Down Mode
• Supports Spread Spectrum modulation: 0 to -0.5% down
spread.
• Uses external 14.318MHz crystal
• Select logic for Differential Swing Control, Test mode,
Tristate, Power down, Spread Spectrum, limited
frequency select, selective clock enable.
• External resistor for current reference
• FS pins for frequency select
Key Specifications:
3V66 Output jitter <300ps
• CPU Output Jitter <200ps
• MREF Output jitter <250ps
GND
MULTSEL0/REF
MULTSEL1/REF
VDDREF
X1
X2
GNDREF
PCICLK0
PCICLK1
VDDPCI
PCICLK2
PCICLK3
GNDPCI
PCICLK4
PCICLK5
VDDPCI
PCICLK6
PCICLK7
GNDPCI
PCICLK8
PCICLK9
VDDPCI
SEL100/133
GND48
FS0/48MHz
FS1/48MHz
VDD48
PD#
Pin Configuration
1 56 VDDMREF
2 55 3VMREF
3 54 3VMREF_B
4 53 GNDMREF
5 52 SPREAD#
6 51 CPUCLKST3
7 50 CPUCLKSC3
8 49 VDDCPU
9 48 CPUCLKST2
10 47 CPUCLKSC2
11 46 GNDCPU
12 45 CPUCLKST1
13 44 CPUCLKSC1
14 43 VDDCPU
15 42 CPUCLKST0
16 41 CPUCLKSC0
17 40 GNDCPU
18 39 I REF
19 38 VDDA
20 37 GNDA
21 36 VDD3V66
22 35 3V66-3
23 34 3V66-2
24 33 GND3V66
25 32 GND3V66
26 31 3V66-1
27 30 3V66-0
28 29 VDD3V66
56-Pin 300mil SSOP & TSSOP
Functionality
SEL133/
100
FS0
FS1
Function
0 0 0 Active 100MHz
0 0 1 (Reserved)
0 1 0 (Reserved)
0 1 1 Tristate all outputs
1 0 0 Active 133MHz
1 0 1 (Reserved)
1 1 0 (Reserved)
1 1 1 Test Mode
Power Groups
VDDREF, GNDREF= REF, X1, X2
VDDPCI, GNDPCI = PCICLK
VDD48, GND48 = 48MHz, PLL2
VDD3V66, GND3V66=3V66
VDDCPU, GNDCPU = CPUCLK
VDDMREF, GNDMREF=3VMREF, 3VMREF_B
VDDA=VDD (core supply voltage 3.3V)
GNDA=Ground for core supply
Block Diagram
PLL2
48MHz
2
X1 XTAL
X2 OSC
PLL1
Spread
Spectrum
PD#
SPREAD#
MULTSEL (1:0)
SEL100/133
FS(1:0)
Control
Logic
Config.
Reg.
CPU
DIVDER
3VMREF
DIVDER
PCI
DIVDER
3V66
DIVDER
2 REF
4 CPUCLKST (3:0)
4 CPUCLKSC (3:0)
3VMREF
3VMREF_B
PCICLK (9:0)
10
3V66 (3:0)
4
9250-22 Rev B 12/08/00
Third party brands and names are the property of their respective owners.
ICS reserves the right to make changes in the device data identified in
this publication without further notice. ICS advises its customers to
obtain the latest version of all device data to verify that any
information being relied upon by the customer is current and accurate.

PagesPages 11
Télécharger [ ICS9250-22 ]


Fiche technique recommandé

No Description détaillée Fabricant
ICS9250-22 Frequency Generator & Integrated Buffers for Celeron & PII/III Integrated Circuit Systems
Integrated Circuit Systems
ICS9250-23 Frequency Generator & Integrated Buffers for Celeron & PII/III Integrated Circuit Systems
Integrated Circuit Systems
ICS9250-25 Frequency Generator & Integrated Buffers for Celeron & PII/III Integrated Circuit Systems
Integrated Circuit Systems
ICS9250-26 Frequency Generator & Integrated Buffers for Celeron & PII/III Integrated Circuit Systems
Integrated Circuit Systems

US18650VTC5A

Lithium-Ion Battery

Sony
Sony
TSPC106

PCI Bus Bridge Memory Controller

ATMEL
ATMEL
TP9380

NPN SILICON RF POWER TRANSISTOR

Advanced Semiconductor
Advanced Semiconductor


www.DataSheetWiki.com    |   2020   |   Contactez-nous  |   Recherche