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CY28349 Datasheet

Part Number CY28349
Manufacturers SpectraLinear
Logo SpectraLinear
Description FTG
Datasheet CY28349 DatasheetCY28349 Datasheet (PDF)

CY28349 FTG for Intel® Pentium® 4 CPU and Chipsets Features • Compatible to Intel® CK-Titan & CK-408 Clock Synthesizer/Driver Specifications • System frequency synthesizer for Intel Brookdale 845 and Brookdale - G Pentium® 4 Chipsets www.DataSheet4U.com • Programmable clock output frequency with less than 1 MHz increment • Integrated fail-safe Watchdog timer for system recovery • Automatically switch to HW selected or SW programmed clock frequency when watchdog timer time-out • Fixed 3V66 and PC.

  CY28349   CY28349






Part Number CY28349B
Manufacturers Cypress Semiconductor
Logo Cypress Semiconductor
Description FTG
Datasheet CY28349 DatasheetCY28349B Datasheet (PDF)

CY28349B FTG for Intel® Pentium® 4 CPU and Chipsets Features • Compatible to Intel® CK-Titan and CK-408 Clock • • • • • • Synthesizer/driver specifications System frequency synthesizer for Intel Brookdale 845 and Brookdale – G Pentium® 4 chipsets Programmable clock output frequency with less than 1-MHz increment Integrated fail-safe Watchdog timer for system recovery Automatically switch to hardware-selected or softwareprogrammed clock frequency when w timer time-out Fixed 3V66 and PCI output f.

  CY28349   CY28349







Part Number CY28347
Manufacturers Cypress Semiconductor
Logo Cypress Semiconductor
Description Universal Single-chip Clock Solution
Datasheet CY28349 DatasheetCY28347 Datasheet (PDF)

CY28347 Universal Single-chip Clock Solution for VIA P4M266/KM266 DDR Systems Features • • • • Supports VIA P4M266/KM266 chipsets Supports Pentium® 4, Athlon processors Supports two DDR DIMMS Provides — Two different programmable CPU clock pairs — Six differential DDR SDRAM pairs — Two low-skew/low-jitter AGP clocks — Six low-skew/low-jitter PCI clocks — One 48M output for USB — One programmable 24M or 48M for SIO • Dial-a-Frequency and Dial-a-dB features • Spread Spectrum for best electroma.

  CY28349   CY28349







Part Number CY28346-2
Manufacturers Silicon Laboratories
Logo Silicon Laboratories
Description Clock Synthesizer
Datasheet CY28349 DatasheetCY28346-2 Datasheet (PDF)

CY28346-2 Clock Synthesizer with Differential CPU Outputs Features • Compliant with Intel® CK 408 Mobile Clock Synthesizer specifications • 3.3V power supply • 3 differential CPU clocks • 10 copies of PCI clocks • 5/6 copies of 3V66 clocks • SMBus support with Read Back capabilities Table 1. Frequency Table[1] S2 S1 S0 CPU (0:2) 3V66 100 66M 66M 1 0 1 100M 66M 1 1 0 200M 66M 1 1 1 133M 66M 000 66M 66M 0 0 1 100M 66M 0 1 0 200M 66M 0 1 1 133M 66M M0 0 Hi-Z Hi-Z M 0 1 .

  CY28349   CY28349







Part Number CY28346
Manufacturers Cypress Semiconductor
Logo Cypress Semiconductor
Description Clock Synthesizer with Differential CPU Outputs
Datasheet CY28349 DatasheetCY28346 Datasheet (PDF)

CY28346 Clock Synthesizer with Differential CPU Outputs Features • Compliant with Intel® CK 408 Mobile Clock Synthesizer specifications • 3.3V power supply • Three differential CPU clocks • Ten copies of PCI clocks Table 1. Frequency Table[1] S2 1 1 1 1 0 0 0 0 M M S1 0 0 1 1 0 0 1 1 0 0 S0 0 1 0 1 0 1 0 1 0 1 CPU (0:2) 66M 100M 200M 133M 66M 100M 200M 133M Hi-Z TCLK/2 3V66 66M 66M 66M 66M 66M 66M 66M 66M Hi-Z TCLK/4 66BUFF(0:2)/ 3V66(0:4) 66IN 66IN 66IN 66IN 66M 66M 66M 66M Hi-Z TCLK/4 66IN/3V.

  CY28349   CY28349







FTG

CY28349 FTG for Intel® Pentium® 4 CPU and Chipsets Features • Compatible to Intel® CK-Titan & CK-408 Clock Synthesizer/Driver Specifications • System frequency synthesizer for Intel Brookdale 845 and Brookdale - G Pentium® 4 Chipsets www.DataSheet4U.com • Programmable clock output frequency with less than 1 MHz increment • Integrated fail-safe Watchdog timer for system recovery • Automatically switch to HW selected or SW programmed clock frequency when watchdog timer time-out • Fixed 3V66 and PCI output frequency mode • Capable of generating system RESET after a Watchdog timer time-out occurs or a change in output frequency via SMBus interface • Support SMBus byte read/write and block read/ write operations to simplify system BIOS development • Vendor ID and Revision ID support • Programmable drive strength support • Programmable output skew support • Power management control inputs • Available in 48-pin SSOP CPU x3 3V66 x4 PCI x 10 REF x2 48M x1 24_48M x1 Block Diagram X1 X2 Pin Configuration [1] VDD_REF REF0:1 XTAL OSC PLL 1 PLL Ref Freq Divider Network *FS0:4 VTT_PWRGD# *MULTSEL0:1 PWR_DWN# PLL2 2 SDATA SCLK SMBus Logic *MULTSEL1/REF1 VDD_REF X1 X2 GND_PCI *FS2/PCI_F0 *FS3/PCI_F1 PCI_F2 VDD_PCI VDD_3V66 *FS4/PCI0 3V66_0:2 PCI1 PCI2 GND_PCI VDD_PCI PCI3 PCI_F0:2 PCI4 PCI0:6 PCI5 VDD_48MHz PCI6 3V66_3/48MHz_1 VDD_PCI VTT_PWRGD# VDD_48MHz 48MHz_0 RST# GND_48MHz *FS0/48MHz_0 24_48MHz *FS1/24_48MHz VDD_48MHz VDD_CPU CPU0:1, CPU0:1#, CPU_ITP, CPU_ITP# RST# 1 2 3 4 5 .


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