Multimedia ICs Clock generator for PD BU2190F The BU2190F is a clock generator IC for PD system drives, and uses a single crystal resonator to generate the three clock signals needed for PD system drives. •PDApplications system •1)Features Clock signals of three different frequencies can be 3) Single 5.0V power supply. 4) SOP 8-pin package. generated with a single attached crystal resonator. 2) Internal PLL loop filter, eliminating the need for an attached loop. •Block diagram XTALI BCLK XTAL OSC 16.9344MHz XTALO CLK 1 16.9344MHz PLL 1 1/2 DATA 1 59.2704MHz CLK 2 PLL 2 DATA 2 1/2 40.2192MHz VREF OE 1 Multimedia ICs BU2190F •Pin descriptions Pin No. Pin name Function Circuit 1 CLK2 Clock output 2 (f2 = 40.2192MHz) B 2 GND Ground — 3 XTALI Reference oscillation input C 4 XTALO Reference oscillation output C 5 BCLK Reference oscillation buffer output (fBCLK = 16.9344MHz) B 6 CLK1 Clock output 1 (f1 = 59.2704MHz) B 7 VDD VDD — 8 OE Output enable OE = H BCLK, CLK1, CLK2, enable OE = L BCLK, CLK1, disable, CLK2, enable A •Absolute maximum ratings (Ta = 25°C) Parameter Symbol Limits Unit Applied voltage VDD – 0.5 ~ + 7.0 V Input voltage VIN – 0.5 ~ VDD + 0.5 V Storage temperature Tstg – 30 ~ + 125 °C PD 450 mW Power dissipation ∗ Does not represent guaranteed performance ∗ Reduced by 4.5mW for increase in Ta of 1°C over 25°C. 䊊 Not designed for radiation resistance. •Recommended operating conditions (Ta = 25°C) Symbol Limits Unit Power supply voltage VDD 4.5 ~ 5.5 V Input high level voltage VIH 0.8 × VDD ~ VDD V Input low level voltage VIL Operating temperature Topr Parameter Output load 2 CL 0.0 ~ 0.2 × VDD – 5 ~ + 70 15 (Max.) V °C pF Multimedia ICs BU2190F •Input / output circuits Type A Type C Pin Pin To inside Type B Pin To inside Pin From inside •Electrical characteristics (unless otherwise noted, Ta = 25°C, V DD Parameter Symbol = 5.0V) Min. Typ. Max. Unit – 65.5 – 50.0 Conditions Input low level current IIL – 125 µA VIN = 0V Input high level current IIH – 1.0 0.0 1.0 µA VIN = 5V Input low level voltage VIL — — 0.3 × VDD V Input high level voltage VIH 0.7 × VDD — — V Output low level voltage VOL — — 0.5 V Output high level voltage VOH 0.7 × VDD — — V Operating circuit current IDD — 30 50 mA fREF 16.91 16.9344 16.95 MHz fBCK 16.91 16.9344 16.95 MHz Reference frequency (1) Output frequency (1) 5V / 65.5µA = 76KΩ IOL = 4.0mA IOH = – 4.0mA fXTAL = 16.9344MHz, no load Output frequency (2) f1 – 100ppm 59.2704 + 100ppm MHz fREF × 28 / 4 / 2 Output frequency (3) f2 – 100ppm 40.2192 + 100ppm MHz fREF × 19 / 4 / 2 Output frequency (4) fBLK1 16.80 16.9344 17.00 MHz VDD = 3.3V Output frequency (5) f1-1 30.00 59.2704 57.2 MHz VDD = 3.3V VDD = 3.3V f2-1 20.00 40.2192 40.3 MHz Duty DUTY 40 50 60 % Jitter J1S — 50 — psec Reference value (1sigma) Jitter Jabs — 600 — psec Reference value (min.-to-max. width for jitter) Tpt — 2 — ms Reference value XTAL1 equivalent capacitance CIN — 10 — pF Reference value (pin-to-pin capacitance + internal capacitance) XTAL0 equivalent capacitance COUT — 10 — pF Reference value (pin-to-pin capacitance + internal capacitance) Output frequency (6) Power up time Measure at 1 / 2VDD 3 Multimedia ICs BU2190F •Application example 40.2192MHz CLK2 OE 0.1µF GND VDD 59.2704MHz XTALI CLK1 XTALO BCLK 16.9344MHz fref = 16.9344MHz ∗ This IC should be used mounted to a PC board. If used mounted by a socket, the proper characteristics may not be able to be obtained. components •(1)Attached Crystal oscillator A crystal resonator with an oscillation frequency of 16.9344MHz is usually sufficient. However, if fO precision is necessary, adjust by attaching a capacity to each end of the crystal oscillator. (2) Power supply VDD bypass capacitor •External dimensions (Units: mm) 1 4 0.11 1.27 0.15 ± 0.1 4.4 ± 0.2 5 1.5 ± 0.1 6.2 ± 0.3 5.0 ± 0.2 8 0.4 ± 0.1 0.3Min. 0.15 SOP8 4