CY28439
CY28439 is Clock Generator manufactured by Cypress.
Features
- pliant to Intel CK410
- Supports Intel Prescott and Tejas CPU
- Selectable CPU frequencies
- Differential CPU clock pairs
- 100-MHz differential SRC clocks (two selectable between Fixed and Overclocking)
- 96-MHz differential dot clock
- 48-MHz USB clocks
- 33-MHz PCI clock
- Dial-A-Frequency
- Watchdog
- Two independent overclocking PLLs
- Low-voltage frequency select input
- I2C support with readback capabilities
- Ideal Lexmark Spread Spectrum profile for maximum electromagnetic interference (EMI) reduction
- 3.3V power supply
- 56-pin SSOP and TSSOP packages CPU SRC x2 x6 PCI x9 REF DOT96 x2 x1 USB x1 24-48M x1
Block Diagram
Xin Xout
Pin Configuration
VDD_RE F RE F
14.318MHz Crystal PLL Reference
IREF VDD_CPU CPUT CPUC
PLL1 CPU
FS_[E:A]
Divider
VDD_SRC SRCT (PCI Ex) SRCC (PCI Ex)
PLL2 SRC
Divider
VDD_SRC
PLL3 SATA
Divider
SRCT4_SATA SRCC4_SATA
VDD_48Mhz
PLL4 Fixed
Divider
DOT96T DOT96C VDD_48 USB48 VDD_48 24/48 VDD_PCI PCI VDD_PCI PCIF
VTTPWR_GD#/PD
VSS_PCI PCI3
- FS_E/PCI4 PCI5 VSS_PCI VDD_PCI...
