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| Integrated Circuit Systems, Inc. AV9154A-60 OPTi Notebook Frequency Generator General Description The AV9154A-60 is a low cost frequency generator designed for general purpose PC and disk drive applications. Its CPU clocks provide all necessary frequencies for 286, 386 and 486 systems, including support for the latest speeds of processors. The standard devices use a 14.318 MHz crystal to generate the CPU and peripheral clocks for integrated desktop and notebook motherboards. The AV9154A-60 is specifically designed for use with OPTi core logic chip sets. The AV9154A-60 can operate at 5.0V10% or 3.3V10%, but the CPU frequencies are limited (see the asterisks on the selection tables on page three) during 3.3V operation. The parts have two power-down pins. One shuts off the CPU clock to a low state when the power-down pin is taken high, and the other turns off the 14.318 MHz output in the same manner. Features * * * * * * Compatible with 286, 386, and 486 CPUs Up to 66.6 MHz (-60) CPU clocks All loop filter components internal 3.3V and 5V operation 16-pin 150-mil SOIC Power-down control of CPU clock Applications Computer Motherboards: The AV9154A-60 replaces crystals and oscillators, saving board space, component cost, part count and inventory costs. It produces switchable CPU clock and up to four fixed clocks to drive floppy disk, communications, super I/O, bus and/or keyboard devices. The small package and 3.3V operation is perfect for handheld computers. Block Diagram 9154-60 Rev B 05/30/97 ICS reserves the right to make changes in the device data identified in this publication without further notice. ICS advises its customers to obtain the latest version of all device data to verify that any information being relied upon by the customer is current and accurate. AV9154A-60 Pin Configuration Functionality (in MHz, assuming 14.318 MHz input) FS2 0 0 0 0 1 1 1 1 FS1 0 0 1 1 0 0 1 1 FS0 0 1 0 1 0 1 0 1 CPUCLK 8 16 20 25 33.33 40 50 66.66 16-Pin SOIC Actual Output Frequencies (in MHz, assuming 14.318 MHz input) FS2 0 0 0 0 1 1 1 1 FS1 0 0 1 1 0 0 1 1 FS0 0 1 0 1 0 1 0 1 CPUCLK 8.182 16.11 20.05 25.06 33.24 40.09 50.11 66.48 Pin Descriptions PIN NUMBER 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 PIN NAME FS0 X2 X1 VDD GND 24 Mhz 128 kHz AGND PD14 PDCPUCLK 14.318 Mhz GND VDD CPUCLK FS2 FS1 TYPE I O I P P O O P I I O P P O I I DESCRIPTION Frequency Select 0 for CPUCLK. Crystal out. Connect a 14.318 MHz crystal to this pin. Crystal in. Connect a 14.318 MHz crystal to this pin. Digital Power (+3.3V or +5V). Digital Ground. 24 MHz clock output.* 128 kHz clock output.* Analog Ground. Power-down 14.318 MHz output (active high). Power-down CPU clock (active high). 14.318 MHz reference clock output.* Digital Ground. Digital Power (+3.3V or +5V). CPU Clock output determined by status of FS0 - FS2. Frequency Select 2 for CPUCLK. Frequency Select 1 for CPUCLK. Note: No internal pull-ups on any Inputs. * Frequencies shown are assuming a 14.318 MHz input. 2 AV9154A-60 Absolute Maximum Ratings VDD referenced to GND . . . . . . . . . . . . . . . . . . . . . . 7V Operating temperature under bias. . . . . . . . . . . . . . . . 0C to +70C Storage temperature . . . . . . . . . . . . . . . . . . . . . . . . . . -40C to +150C Voltage on I/O pins referenced to GND. . . . . . . . . . . GND -0.5V to VDD +0.5V Power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 Watts Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated 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 at 5V VDD =+5V10%, TA=0C to 70C unless otherwise stated DC Characteristics PARAMETER Input Low Voltage Input High Voltage Input Low Current Input High Current Output Low Voltage 1 Output High Voltage Output Low Current Output High Current Supply Current Output Frequency Change over Supply and Temperature 1 Short circuit current Input Capacitance Load Capacitance 1 1 1 1 1 1 SYMBOL VIL VIH IIL IIH VOL VOH IOL IOH IDD FD ISC Ci CL IDDSTBY TEST CONDITIONS VDD=5V VDD=5V VIN=0V VIN=VDD IOL=10mA IOH=-30mA VOL=0.8V VOH=2.4V No load 2 With respect to typical frequency Each output clock Except X1, X2 Pins X1, X2 When powered-down MIN 2.0 2.4 15 25 - TYP 0.15 3.7 32 -48 25 0.002 40 20 20 MAX 0.8 -5 5 0.4 -30 50 0.01 10 - UNITS V V A A V V mA mA mA % mA pF pF mA Supply Current, lowest Note: 1. Parameter is guaranteed by design and characterization. Not 100% tested in production. 2. All clocks on AV9154A-60 running at highest possible frequencies. 3 AV9154A-60 Electrical Characteristics at 5V VDD =+5V10%, TA=0C to 70C unless otherwise stated AC Characteristics PARAMETER Input Clock Rise time Output Rise time Rise time1 Output Fall time1 Fall time 1 1 1 SYMBOL tICr tICf tr tr tf tf dt 1 TEST CONDITIONS MIN TYP MAX 20 20 UNITS ns ns ns ns ns ns % % % % ps MHz ms ms Input Clock Fall time 1 15pF load, 0.8 to 2.0V 15pF load, 20% to 80% VDD 15pF load, 2.0 to 0.8V 15pF load, 80% to 20% VDD 15pF load 15pF load As compared with clock period 16-80 MHz clocks 40/60 40/60 1 2 1 2 48/52 43/57 0.8 2 14.318 2 4 2 4 60/40 60/40 2.5 5 700 Duty cycle1 Duty cycle, reference clock Jitter, one sigma1 Jitter, absolute1 Jitter, absolute 1 dt Tjls Tjab Tjab fi tft tpu Input Frequency 1 Frequency Transition time 1 Power-up time1 From 16 to 80 MHz From off to 50 MHz 15 15 20 Note: 1. Parameter is guaranteed by design and characterization. Not 100% tested in production. 4 AV9154A-60 Electrical Characteristics at 3.3V Operating VDD =+3.0V to +3.7V, TA=0C to 70C unless otherwise stated DC Characteristics PARAMETER Input Low Voltage Input High Voltage Input Low Current Input High Current Output Low Voltage 1 Output High Voltage Supply Current Output Low Current1 Output High Current 1 1 SYMBOL VIL VIH IIL IIH VOL VOH IDD IOL IOH Fd Ci CL IDDL ISC TEST CONDITIONS MIN 0.7VDD TYP 0.05VDD 0.94VDD 15 22 -11 0.002 20 14 30 MAX 0.2VDD 5 5 0.1VDD 27 -6.5 0.01 10 - UNITS V V A A V V mA mA mA % pF pF mA mA VIN=0V VIN=VDD IOL=6mA IOH=-4mA Note 2, no load VOL=0.2VDD VOH=0.7VDD With respect to typical frequency Except X1, X2 Pins X1, X2 When powered-down -5 -5 0.85VDD 12 - Output Frequency Change over Supply and Temperature1 Input Capacitance 1 Load Capacitance1 Supply Current, lowest Short Circuit Current1 Note: 1. Parameter is guaranteed by design and characterization. Not 100% tested in production. 2. All clocks on AV9154A-60 running at highest possible frequencies. 5 AV9154A-60 Electrical Characteristics at 3.3V Operating VDD =+3.0V to +3.7V, TA=0C to 70C unless otherwise stated AC Characteristics PARAMETER Input Clock Rise time Rise time 1 1 SYMBOL tICr tICf tr tf dt 1 TEST CONDITIONS MIN - TYP 48/52 43/57 100 0.5 165 3 15 MAX 20 20 4 4 60/40 60/40 200 2 350 5 20 33 UNITS ns ns ns ns % % ps % ps % ms ms MHz MHz Input Clock Fall time1 Fall time1 Duty cycle, fixed clocks 1 Duty cycle, reference clock Jitter, one sigma1, below 20 MHz Jitter, absolute 1 , 20-66 Mhz Jitter, absolute , below 20 Mhz Frequency Transition time 1 Power-up time1 Output Frequency 1 Input Frequency 1 1 15pF load 15pF load 15pF load 15pF load 40/60 40/60 -350 -5 dt Tjls1 Tjls2 Tjabs1 Tjabs2 tft tpu fo fi Jitter, one sigma1, 20-66 MHz from 8 to 33 Mhz from off to 50 Mhz 2 - 14.318 - Note: 1. Parameter is guaranteed by design and characterization. Not 100% tested in production. 6 AV9154A-60 16-Pin SOIC Package Ordering Information AV9154A-60CS16 Example: ICS XXXX-PPP M X#W Lead Count & Package Width Lead Count=1, 2 or 3 digits W=.3" SOIC or .6" DIP; None=Standard Width Package Type S=SOIC Pattern Number (2 or 3 digit number for parts with ROM code patterns) Device Type (consists of 3 or 4 digit numbers) Prefix ICS, AV=Standard Device; GSP=Genlock Device 7 ICS reserves the right to make changes in the device data identified in this publication without further notice. ICS advises its customers to obtain the latest version of all device data to verify that any information being relied upon by the customer is current and accurate. |
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