CY28419 Datasheet | Cypress

.. Clock Synthesizer with Differential SRC and CPU Outputs Features - - - - - - - CK409B-pliant Supports Intel Pentium 4-type CPUs Selectable CPU frequencies 3.3V power supply Ten copies of PCI clocks Two copies 48-m Hz clock Five copies of 3V66 with one optional VCH - - - - Four differential CPU clock pairs One differential SRC clock I2C support with readback capabilities Ideal Lexmark Spread Spectrum profile for maximum electromagnetic interference (EMI) reduction - 56-pin SSOP package CPU x4 SRC x1 3V66 x5 PCI x 10 REF x2 48M x2 Block Diagram XIN XOUT Pin Configuration VDD_REF REF0:1 VDD_CPU CPUT(0:3), CPUC(0:3) VDD_SRC SRCT, SRCC [1] XTAL OSC PLL 1 PLL Ref Freq Divider Network FS_(A:B) VTT_PWRGD# IREF VDD_3V66 3V66_(0:3) PLL2 VDD_PCI PCIF(0:2) PCI(0:6) 3V66_4/VCH PD# VDD_48MHz DOT_48 USB_48 SDATA SCLK I2C Logic REF_0 REF_1 VDD_REF XIN XOUT VSS_REF PCIF0 PCIF1 PCIF2 VDD_PCI VSS_PCI PCI0 PCI1 PCI2 PCI3 VDD_PCI VSS_PCI PCI4 PCI5 PCI6 PD# 3V66_0 3V66_1 VDD_3V66 VSS_3V66 3V66_2 3V66_3 SCLK 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 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 FS_B VDD_A VSS_A VSS_IREF IREF FS_A CPUT3 CPUC3 VDD_CPU CPUT2 CPUC2 VSS_CPU CPUT1 CPUC1 VDD_CPU CPUT0 CPUC0 VSS_SRC SRCT SRCC VDD_SRC VTT_PWRGD# VDD_48 VSS_48 DOT_48 USB_48 SDATA 3V66_4/VCH SSOP-56...