AV9154A-60 Integrated Circuit Systems, Inc. OPTi Notebook Frequency Generator General Description Features 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 5.0V±10% or 3.3V±10%, 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. 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 Functionality Pin Configuration (in MHz, assuming 14.318 MHz input) 16-Pin SOIC FS2 FS1 FS0 CPUCLK 0 0 0 8 0 0 1 16 0 1 0 20 0 1 1 25 1 0 0 33.33 1 0 1 40 1 1 0 50 1 1 1 66.66 Actual Output Frequencies (in MHz, assuming 14.318 MHz input) FS2 FS1 FS0 CPUCLK 0 0 0 8.182 0 0 1 16.11 0 1 0 20.05 0 1 1 25.06 1 0 0 33.24 1 0 1 40.09 1 1 0 50.11 1 1 1 66.48 Pin Descriptions PIN NUMBER PIN NAME TYPE DESCRIPTION 1 FS0 I Frequency Select 0 for CPUCLK. 2 X2 O Crystal out. Connect a 14.318 MHz crystal to this pin. 3 X1 I Crystal in. Connect a 14.318 MHz crystal to this pin. 4 VDD P Digital Power (+3.3V or +5V). 5 GND P Digital Ground. 6 24 Mhz O 24 MHz clock output.* 7 128 kHz O 128 kHz clock output.* 8 AGND P Analog Ground. Power-down 14.318 MHz output (active high). 9 PD14 I 10 PDCPUCLK I Power-down CPU clock (active high). 11 14.318 Mhz O 14.318 MHz reference clock output.* 12 GND P Digital Ground. 13 VDD P Digital Power (+3.3V or +5V). 14 CPUCLK O CPU Clock output determined by status of FS0 - FS2. 15 FS2 I Frequency Select 2 for CPUCLK. 16 FS1 I 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. . . . . . . . . . . . . . . . 0°C to +70°C Storage temperature . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +150°C 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 =+5V±10%, TA=0°C to 70°C unless otherwise stated DC Characteristics MIN TYP MAX UNITS Input Low Voltage PARAMETER VIL VDD=5V - - 0.8 V Input High Voltage VIH VDD=5V 2.0 - - V Input Low Current IIL VIN=0V - - -5 µA Input High Current IIH VIN=VDD - - 5 µA V Output Low Voltage 1 SYMBOL TEST CONDITIONS VOL IOL=10mA - 0.15 0.4 Output High Voltage 1 VOH IOH=-30mA 2.4 3.7 - V Output Low Current 1 IOL VOL=0.8V 15 32 - mA Output High Current 1 IOH VOH=2.4V - -48 -30 mA Supply Current IDD No load 2 - 25 50 mA Output Frequency Change over Supply and Temperature 1 FD With respect to typical frequency - 0.002 0.01 % 25 40 - mA Short circuit current 1 ISC Each output clock Input Capacitance 1 Ci Except X1, X2 - - 10 pF Load Capacitance 1 CL Pins X1, X2 - 20 - pF When powered-down - 20 - mA Supply Current, lowest IDDSTBY 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 =+5V±10%, TA=0°C to 70°C unless otherwise stated AC Characteristics PARAMETER Input Clock Rise time SYMBOL 1 Input Clock Fall time 1 Output Rise time 1 TEST CONDITIONS MIN TYP MAX UNITS tICr 20 ns tICf 20 ns tr 15pF load, 0.8 to 2.0V - 1 2 ns Rise time1 tr 15pF load, 20% to 80% V DD - 2 4 ns Output Fall time1 tf 15pF load, 2.0 to 0.8V - 1 2 ns Fall time 1 Duty cycle1 Duty cycle, reference clock 1 tf 15pF load, 80% to 20% V DD - 2 4 ns dt 15pF load 40/60 48/52 60/40 % 40/60 43/57 60/40 % ±0.8 ±2.5 % ±2 ±5 % dt 15pF load Jitter, one sigma1 Tjls Jitter, absolute1 Tjab As compared with clock period 1 Tjab 16-80 MHz clocks Jitter, absolute Input Frequency 1 fi 700 14.318 Frequency Transition time 1 tft From 16 to 80 MHz 15 Power-up time1 tpu From off to 50 MHz 15 Note: 1. Parameter is guaranteed by design and characterization. Not 100% tested in production. 4 ps MHz 20 ms ms AV9154A-60 Electrical Characteristics at 3.3V Operating VDD =+3.0V to +3.7V, TA=0°C to 70°C unless otherwise stated DC Characteristics PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS V Input Low Voltage VIL - - 0.2VDD Input High Voltage VIH 0.7VDD - - V Input Low Current IIL VIN=0V -5 - 5 µA IIH VIN=VDD -5 - 5 µA Output Low Voltage 1 Input High Current VOL IOL=6mA - 0.05VDD 0.1VDD V 1 VOH IOH=-4mA 0.85VDD 0.94VDD - V IDD Note 2, no load - 15 27 mA Output Low Current1 IOL VOL=0.2VDD 12 22 - mA 1 IOH VOH=0.7VDD - -11 -6.5 mA Fd With respect to typical frequency - 0.002 0.01 % Input Capacitance 1 Ci Except X1, X2 - - 10 pF Load Capacitance1 CL Pins X1, X2 - 20 - pF Output High Voltage Supply Current Output High Current Output Frequency Change over Supply and Temperature1 Supply Current, lowest IDDL Short Circuit Current1 ISC When powered-down - 14 - mA - 30 - mA 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=0°C to 70°C unless otherwise stated AC Characteristics PARAMETER Input Clock Rise time SYMBOL 1 Input Clock Fall time1 1 TEST CONDITIONS MIN TYP MAX UNITS tICr - - 20 ns tICf - - 20 ns tr 15pF load - - 4 ns Fall time1 tf 15pF load - - 4 ns Duty cycle, fixed clocks 1 dt 15pF load 40/60 48/52 60/40 % dt 15pF load Rise time Duty cycle, reference clock 1 40/60 43/57 60/40 % Jitter, one sigma1, 20-66 MHz Tjls1 - 100 200 ps Jitter, one sigma1, below 20 MHz Tjls2 - 0.5 2 % Jitter, absolute 1 , 20-66 Mhz Tjabs1 -350 ±165 350 ps -5 ±3 ±5 % - - 20 ms - 15 1 Jitter, absolute , below 20 Mhz Tjabs2 Frequency Transition time 1 tft from 8 to 33 Mhz Power-up time1 tpu from off to 50 Mhz Output Frequency 1 fo 2 Input Frequency 1 fi - 14.318 Note: 1. Parameter is guaranteed by design and characterization. Not 100% tested in production. 6 - ms 33 MHz - MHz 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.