|
|
PDF MK1491E-14 Data sheet ( Hoja de datos )
| Número de pieza | MK1491E-14 | |
| Descripción | OPTi ACPI Firestar Clock Source | |
| Fabricantes | Integrated Circuit Systems | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de MK1491E-14 (archivo pdf) en la parte inferior de esta página. Total 4 Páginas | ||
|
No Preview Available !
www.DataSheet4U.com
MK1491-14
OPTi ACPI Firestar Clock Source
Description
The MK1491-14 is a low cost, low jitter, high
performance clock synthesizer for OPTi’s
Firestar and Firestar+ chipsets for Pentium™
Processor-based mobile computer applications.
Using analog Phase-Locked Loop (PLL)
techniques, the device uses a 14.318 MHz
crystal input to produce multiple output
clocks up to 75 MHz. It provides selectable
Host and PCI local bus clocks as well as
selectable clocks for Super I/O or Universal
Serial Bus (USB). The device has up to seven
Host output clocks.
The chip has three different power down
modes that reduce power on various clocks.
Features
• Packaged in 28 pin, 150 mil wide SSOP
• Provides all critical timing for OPTi ACPI Firestar
and Firestar+
• Early Host clock of 3.5ns
• Separate VDD and skew adjust for Host 5,6, and 7
supports field upgrade to Firestar+ and new 2.5V
processors
• 48MHz USB, 24MHz SIO, and Audio clock support
• Single pin CPU(Host) slowdown to 33.3MHz
• Multiple power down modes
• Low EMI Enable pin reduces EMI radiation (patent
pending)
Block Diagram
VDD
3
GND
4
VDD HOST5-7
HS VDDHOST1-4
FS1:0
Synch./Asynch. PCI
STOP#
SLOW#
Low EMI Enable
PS
SEL0
SEL1
HOST/PCI
Clocks
Fixed
Clock
Host/2
MUX
33M
Output
Buffers
Output
Buffers
Output
Buffers
Output
Buffer
4
HOST1:4
2
HOST 5, 7
EHOST6
5
PCI 1:5
F1
XI
14.31818 MHz
crystal
XO
Crystal
Oscillator
Output
Buffer
Output
Buffer
F2
14.318 MHz
MDS 1491-14 B
1 Revision 061801
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose •CA •95126 • (408)295-9800tel • www.icst.com
1 page | ||
| Páginas | Total 4 Páginas | |
| PDF Descargar | [ Datasheet MK1491E-14.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| MK1491E-14 | OPTi ACPI Firestar Clock Source | Integrated Circuit Systems |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |