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| PRELIMINARY INFORMATION ICS604 Intel Graphics Clock Source Description The ICS604 is the most cost effective way to generate high quality, high frequency clocks for Intel's latest generation of graphics controllers. It provides 48 MHz for the graphics controller, a 24.576 MHz clock for video or audio, as well as a 14.31818 MHz buffered output for the system clock. Using patented Phase-Locked-Loop (PLL) techniques, the ICS604 requires only a standard fundamental mode, inexpensive crystal. ICS makes additional devices to meet multiple graphic system requirements. If the 24.576 MHz clock is not needed, use the ICS513. If additional frequencies are required for different video encoders and decoders, see the ICS614-01. Features * Packaged as 8 pin SOIC or die * Compatible with Intel graphics controllers * Zero ppm synthesis error on 48 MHz output * Input frequency of 14.31818 MHz * Output clock frequencies of 48 MHz, 24.576 MHz, plus 14.31818 MHz Reference output * Low jitter * Operating voltages of 3.0 to 5.5 V * Full CMOS-level outputs with 25 mA drive capability at TTL levels * Advanced, low power CMOS process Block Diagram VDDC GND VDDIO PLL Clock Synthesis and Control Circuitry 14.318 MHz crystal or clock X1/ICLK Output Buffer 48 MHz Output Buffer 24.576 MHz Crystal Oscillator X2 Output Buffer 14.318 MHz 1 Revision 022499 Printed 11/14/00 Integrated Circuit Systems * 525 Race Street * San Jose * CA * 95126 *(408)295-9800tel*(408)295-9818fax MDS 604 A PRELIMINARY INFORMATION ICS604 Intel Graphics Clock Source Pin Assignment X1/ICLK VDDC GND 14.3M 1 2 3 4 8 7 6 5 X2 VDDIO 24.576M 48M Pin Descriptions Number 1 2 3 4 5 6 7 8 Name X1/ICLK VDDC GND 14.3M 48M 24.576M VDDIO X2 Type XI P P O O O P XO Description Crystal connection for 14.31818 MHz crystal, or clock input. Connect to +3.3V or +5V. +5 V recommended for lowest output noise (jitter). Connect to ground. Buffered crystal oscillator output clock. 48.0 MHz clock output for Intel graphics controller. 24.576 MHz clock output. Connect to +3.3 V or +5 V. Cannot be greater than VDDC. Crystal connection for 14.31818 MHz crystal. Leave unconnected for clock input. Key: I = Input; O = output; XI, XO = crystal connections; P = power supply connection External Components / Crystal Selection The ICS604 requires 0.01 F decoupling capacitors to be connected between VDDC and GND, and between VDDIO and GND. They must be connected close to the ICS604 to minimize lead inductance. No external power supply filtering is required for this device. A 33 terminating resistor can be used next to the output pins when driving 50 lines. The total on-chip crystal capacitance is approximately 6 pF, and a parallel resonant, fundamental mode crystal should be used. Crystal capacitors should be connected from each of the pins X1 and X2 to Ground as shown in the Block Diagram on page 1. The value (in pF) of these crystal caps should be = (CL -6)*2, where CL is the crystal load capacitance in pF. For a clock input, connect to X1 and leave X2 unconnected (no capacitors on either). 2 Revision 022499 Printed 11/14/00 Integrated Circuit Systems * 525 Race Street * San Jose * CA * 95126 *(408)295-9800tel*(408)295-9818fax MDS 604 A PRELIMINARY INFORMATION ICS604 Intel Graphics Clock Source Typical Maximum 7 VDDC+0.5 VDDC+0.5 70 260 150 5.5 VDDC (VDDIO/2)-1 Units V V V C C C V V V V V V V mA mA MHz MHz ppm ppm ns ns % ps ps ps ps ps ps ps ps Electrical Specifications Parameter Conditions ABSOLUTE MAXIMUM RATINGS (note 1) Supply Voltage, VDDC or VDDIO Referenced to GND Inputs Referenced to GND Clock Outputs Referenced to GND Ambient Operating Temperature Soldering Temperature Max of 10 seconds Storage temperature DC CHARACTERISTICS (VDDC = 5 V unless otherwise noted) Operating Voltage, VDDC Operating Voltage, VDDIO Input High Voltage, VIH. Clock input ICLK (Pin 1) Input Low Voltage, VIL. Clock input ICLK (Pin 1) Output High Voltage, VOH IOH=-8 mA Output High Voltage, VOH IOH=-25 mA Output Low Voltage, VOL IOL=25 mA IDD Operating Supply Current No load Short Circuit Current Output clocks AC CHARACTERISTICS (VDDC = 5 V unless otherwise noted) Input Frequency, crystal input Input Frequency, clock input Actual mean frequency error vs target 48.0 MHz 24.576 MHz Output Clock Rise Time 0.8 to 2.0V Output Clock Fall Time 2.0 to 0.8V Output Clock Duty Cycle at VDDIO/2 Absolute Clock Period Jitter, deviation 48.0 MHz from mean. VDDC = 5 V, VDDIO = 3.3 V 24.576 MHz Absolute Clock Period Jitter, deviation 48.0 MHz from mean. VDDC = 3.3 V, VDDIO = 3.3 V 24.576 MHz One Sigma Clock Period Jitter, 48.0 MHz VDDC = 5 V, VDDIO = 3.3 V 24.576 MHz One Sigma Clock Period Jitter, 48.0 MHz VDDC = 3.3 V, VDDIO = 3.3 V 24.576 MHz Minimum -0.5 -0.5 0 -65 3 3 (VDDIO/2)+1 VDDIO/2 VDDIO/2 VDDIO-0.4 2.4 18 100 14.31818 14.31818 0.4 0 32 1 1 40 250 125 350 160 90 40 110 50 60 Notes: 1. Stresses beyond those listed under Absolute Maximum Ratings could cause permanent damage to the device. Prolonged exposure to levels above the operating limits but below the Absolute Maximums may affect device reliability. 2. Typical values are at 25 C. 3 Revision 022499 Printed 11/14/00 Integrated Circuit Systems * 525 Race Street * San Jose * CA * 95126 *(408)295-9800tel*(408)295-9818fax MDS 604 A PRELIMINARY INFORMATION ICS604 Intel Graphics Clock Source Package Outline and Package Dimensions 8 pin SOIC E Pin 1 H Symbol A b D E H e h Q Inches Min Max 0.055 0.068 0.013 0.019 0.185 0.200 0.150 0.160 0.225 0.245 .050 BSC 0.015 0.004 0.01 Millimeters Min Max 1.397 1.7272 0.330 0.483 4.699 5.080 3.810 4.064 5.715 6.223 1.27 BSC 0.381 0.102 0.254 D Q e b c h x 45 A Ordering Information Part/Order Number ICS604M ICS604MT Marking ICS604M ICS604M Package 8 pin SOIC 8 pin SOIC on tape and reel Temperature 0 - 70 C 0 - 70 C While the information presented herein has been checked for both accuracy and reliability, ICS assumes no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial applications. Any other applications such as those requiring extended temperature range, high reliability, or other extraordinary environmental requirements are not recommended without additional processing by ICS. ICS reserves the right to change any circuitry or specifications without notice. ICS does not authorize or warrant any ICS product for use in life support devices or critical medical instruments. 4 Revision 022499 Printed 11/14/00 Integrated Circuit Systems * 525 Race Street * San Jose * CA * 95126 *(408)295-9800tel*(408)295-9818fax MDS 604 A |
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