ICS960002 Integrated Circuit Systems, Inc. Power PC Based LBP Features - CPU, ASIC, and PCI can run at 2.5V or 3.3V selectable. - Generates the following system clocks: 1-CPU (2.5V/3.3V) (66.66MHz to 100.00MHz) 2-PCI (2.5V/3.3V) (33.33MHz) 2-ASIC (2.5V/3.3V) (66.66MHz to 100.00MHz) 1-ASIC (2.5V/3.3V) (33.33MHz to 100.00MHz) 1-USB (3.3V) (48MHz) GNDCOR SSC1/ASIC_3.3V_2.5# SSC0/CPU_3.3V_2.5# X1 X2 VDDCOR VDDDIG VDDPCI PCICLK0/PCI_3.3V_2.5# PCICLK1/PCI_EN* GND GND USB0/USB_EN* VDDUSB - SKEW Characteristics: CPU to ASIC < 250ps - Jitter Characteristics CPU/ASIC <150ps (cycle to cycle) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ICS60002 Pin Configuration 28 27 26 25 24 23 22 21 20 19 18 17 16 15 GND CPUCLK0 VDDCPU VDDASIC2 ASIC2A/ASIC2A_EN* ASIC2B GND GND ASIC1 VDDASIC1 GND ASIC1_SEL* CLK_SEL1 CLK_SEL0 Note: * 60Kohm to 120Kohm Internal Pullup Resistor 209Mil SSOP -Spread Spectrum features Off -0.5%, 1.0%, and 1.25% Downspread - Power Management Enable/Disable PCI, ASIC2, and/or USB independantly - Uses external 14.318MHz crystal or reference clock Block Diagram VDDCOR, DIG, USB=3.3V 3 XIN XOUT XTAL OSC VDDCPU, ASIC1, ASIC2, PCI = 2.5V or3.3V 4 PLL2 PLL1 Spread Spectrum CPU Divider USB Power Groups CPU Pin Number VDD GND ASIC1 DIV 2 STOP 2 ASIC2 (A, B) Control Logic SSC [1:0] USB_EN CLK_SEL [1:0] PCI_EN ASIC2_EN ASIC_SEL Configuration Resistor 3 GNDCOR, DIG, USB=0V 0677A--07/03/02 PCI Divider PCI (1:0) 2 6, 7 8 14 19 25 26 1, 18 11 12 21 22 28 Description 3.3V Internal Logic and Core Power PCI outputs USB outputs ASIC1 outputs ASIC2 outputs CPU ouputs 4 GNDCPU, ASIC1, ASIC2, PCI = 0V Pentium is a trademark on Intel Corporation. ICS960002 Pin Descriptions PIN # 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 PIN NAM E G NDCO R SSC1/ASIC_3.3V_2.5# SSC0/CPU_3.3V_2.5# X1 X2 VDDCO R VDDDIG VDDPCI PCICLK0/PCI_3.3V_2.5# PCICLK1/PCI_EN* G ND G ND USB0/USB_EN* VDDUSB CLK_SEL0 CLK_SEL1 ASIC1_SEL* G ND VDDASIC1 ASIC1 G ND G ND ASIC2B ASIC2A/ASIC2A_EN* VDDASIC2 VDDCPU CPUCLK0 G ND PIN TY PE DESCRIP TION PWR IN IN IN O UT PWR PWR PWR I/O I/O PWR PWR I/O PWR IN IN IN PWR PWR O UT PWR PWR O UT I/O PWR PWR O UT PWR G round pin for the PLL core. Spread Spectrum amplitude control with ASIC 3.3V/2.5V# select. Spread Spectrum amplitude control with CPU 3.3V/2.5V# select. Crystal input,nominally 14.318MHz. Crystal output, nominally 14.318MHz. 3.3V power for the PLL core. 3.3V internal digital pow er. Power supply for PCI clocks, nominal 3.3V PCI clock output with C PU 3.3V/2.5V# select. PCI clock output with latched PCI enable function at startup. G round pin for 3V outputs. G round pin for 3V outputs. USB clock output with latched USB enable function at startup. Supply for USB clocks,3.3V nominal Function select pin. See table for details. Function select pin. See table for details. Function select pin. See table for details. G round pin for 3V outputs. Supply for ASIC1clocks,3.3V nominal ASIC1 clock output. G round pin for 3V outputs. G round pin for 3V outputs. ASIC2B clock output. ASIC2A clock output with latched PCI enable function at startup. Supply for ASIC2 clocks,3.3V nominal Supply for CPU clocks, 3.3V nominal CPU clock outputs. G round pin for 3V outputs. NO TE: Internal pull-up resitors on pin 10, 13, 17, and 24. No internal resistor for pin 2, 3, 9, 15 or 16. 0677A--07/03/02 2 ICS960002 Frequency Tables CLK_SEL1 CLK_SEL0 CPU (MHz) 0 0 1 1 0 1 0 1 66.66 100.00 83.33 88.88 ASIC1 (MHz) ASIC2 [A, B] ASIC1_SEL=1 ASIC1_SEL=0 (MHz) 66.66 33.33 66.66 100.00 50.00 100.00 83.33 41.67 83.33 88.88 44.44 88.88 Spread Spectrum Selection Table SSC1 0 0 1 1 Spread Spectrum Modulation [MHz] OFF -0.50% Down Spread -1.00% Down Spread -1.25% Down Spread SSC0 0 1 0 1 Power Management Table USB_EN 0 1 PCI_EN ASIC2_EN X X X X X X X X 0 1 X X X X 0 1 USB Tri-state 48MHz PCICLK(1,0) X X ASIC2 X X X X X X Tri-state 33.3MHz X X X X Tri-state SELECTED 0677A--07/03/02 3 ICS960002 Absolute Maximum Ratings Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . 5.5V Logic Inputs . . . . . . . . . . . . . . . . . . . . . . . . . GND -0.5 V to VDD +0.5 V Ambient Operating Temperature . . . . . . . . . . 0C to +70C Storage Temperature . . . . . . . . . . . . . . . . . . . -65C to +150C Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. These ratings are stress specifications only and functional operation of the device at these or any other conditions above those listed in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect product reliability. Electrical Characteristics - AC Specification TA = 0 - 70 C; VDD = 3.3 V or 2.5V +/-5%; CL=20pF(unless otherwise stated) SYMBO PARAMETERS CONDITIONS MIN. L ZO Input Frequency fmod SST modulation sweep rate tr2B 0.8V to 2.0V with no load Output Rise Time tf2B 2.0V to 0.8V with no load Output Fall Time d t2B At VDD/2 45 Duty Cycle Equal Power Supply for both tsk2B ASIC and CPU at same CPU and ASIC Skew Frequency; Cl =20 pF tjitabs2B CPU and ASIC only. Max. Absolute Period Jitter -150 tjcyc-cyc2B CPU and ASIC only. Max. Jitter, cycle to cycle 0677A--07/03/02 4 TYP. MAX. UNITS 50 1.5 1.5 55 MHz kHz ns ns % 200 250 ps 90 150 120 ps ps 14.31818 32.2 0.5 0.5 ICS960002 Electrical Characteristics - DC Specification TA = 0 - 70 C; VDD =See table below; CL = 20 pF (unless otherwise stated) PARAMETERS SYMBOL CONDITIONS MIN. VDDCOR Nominal voltage is 2.97 VDDDIG 3.3V VDDUSB Operating Voltage VDDPCI 2.25 Nominal voltage is VDDASIC1 3.3V or 2.5V VDDASIC2 2.97 VDDCPU For all normal input 2 Input High Voltage VIH Input Low Voltage V IL For all normal input VSS-0.3 Output High Voltage VOH IOH = -25mA 2.4 Output Low Voltage VOL IOL = 25mA Operating Supply No Load IDD Current 0677A--07/03/02 5 TYP. MAX. UNITS 3.3V 3.63 V 2.5V 2.75 V 3.3V 3.63 V VDD+0.3 0.8 0.4 V V V V 50 mA 35 ICS960002 Shared Pin Operation Input/Output Pins subsequent operating period. Figure 1 shows a means of implementing this function when a switch or 2 pin header is used. When no jumper is installed the pin will be pulled high. With the jumper in place the pin will be pulled low. If programmability is not necessary, then only a single resistor is necessary. The programming resistors should be located close to the series termination resistor to minimize the current loop area. It is more important to locate the series termination resistor close to the driver than the programming resistor. The I/O pins designated by (input/output) serve as dual signal functions to the device. During initial power-up, they act as input pins. The logic level (voltage) that is present on these pins at this time is read and stored into a 5-bit internal data latch. At the end of Power-On reset, (see AC characteristics for timing values), the device changes the mode of operations for these pins to an output function. In this mode the pins produce the specified buffered clocks to external loads. To program (load) the internal configuration register for these pins, a resistor is connected to either the VDD (logic 1) power supply or the GND (logic 0) voltage potential. A 10 Kilohm (10K) resistor is used both to provide the solid CMOS programming voltage needed during the power-up programming period and to provide an insignificant load on the output clock during the Via to VDD Programming Header 2K W Via to Gnd Device Pad 8.2K W Clock trace to load Series Term. Res. Fig. 1 0677A--07/03/02 6 ICS960002 c N 209 m il SSOP In Millimeters In Inches SYMBOL COMMON DIMENSIONS COMMON DIMENSIONS MIN MAX MIN MAX A -2.00 -.079 A1 0.05 -.002 -A2 1.65 1.85 .065 .073 b 0.22 0.38 .009 .015 c 0.09 0.25 .0035 .010 D SEE VARIATIONS SEE VARIATIONS E 7.40 8.20 .291 .323 E1 5.00 5.60 .197 .220 e 0.65 BASIC 0.0256 BASIC L 0.55 0.95 .022 .037 N SEE VARIATIONS SEE VARIATIONS 0 8 0 8 L E1 INDEX AREA E 1 2 D A A2 A1 -Ce b VARIATIONS SEATING PLANE N .10 (.004) C 28 D mm. MIN 9.90 D (inch) MAX 10.50 MIN .390 R eferenc e D o c .: J ED EC P ublic at io n 95, M O-150 10-0033 209 mil SSOP Ordering Information ICS960002 Example: ICS XXXX y F - T Designation for tape and reel packaging Package Type F=SSOP Revision Designator (will not correlate with datasheet revision) Device Type Prefix ICS = Standard Device 0677A--07/03/02 7 MAX .413