FS6370-01

www.DataSheet4U.com FS6370-01 EEPROM Programmable 3-PLL Clock Generator IC 1.0 2 Features Just-in-time customization of clock frequencies via internal non-volatile 128-bit serial EEPROM I Cä-bus serial interface Three on-chip PLLs with programmable Reference and Feedback Dividers Four independently programmable muxes and post dividers Programmable power-down of all PLLs and output clock drivers Tristate outputs for board testing One PLL and two mux/post-divider combinations can be modified via SEL_CD input 5V to 3.3V operation Accepts 5MHz to 27MHz crystal resonators ROM-based device available for cost reduction migration path – contact your AMI sales representative for more information 2.0 Description The FS6370 is a CMOS clock generator IC designed to minimize cost and component count in a variety of electronic systems. Three EEPROM-programmable phaselocked loops (PLLs) driving four programmable muxes and post dividers provide a high degree of flexibility. An internal EEPROM permits just-in-time factory programming of devices for end user requirements. Figure 1: Pin Configuration VSS SEL_CD PD/SCL VSS XIN XOUT OE/SDA VDD 1 2 3 16 15 14 VDD CLK_A VDD CLK_B CLK_C VSS CLK_D MODE FS6370 4 5 6 7 8 13 12 11 10 9 16-pin (0.150”) SOIC Figure 2: Block Diagram XIN XOUT Reference Oscillator PLL A Mux A Post Divider A CLK_A MODE PD/SCL Power Down Control PLL B I2C-bus Interface Mux B Post Divider B CLK_B OE/SDA PLL C EEPROM Mux C Post Divider C...