Page 1
PRELIMINARY
PRELIMINARY
INFORMATION
INFORMATION
Intel Graphics Clock Source
ICS604
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
14.318 MHz
crystal or clock
X1/ICLK
X2
VDDC GND
Crystal
Oscillator
PLL
Clock
Synthesis
and Control
Circuitry
VDDIO
Output
Buffer
Output
Buffer
Output
Buffer
48 MHz
24.576 MHz
14.318 MHz
MDS 604 A 1 Revision 022499 Printed 11/14/00
Integrated Circuit Systems • 525 Race Street • San Jose • CA • 95126 •(408)295-9800tel•(408)295-9818fax
Page 2
Pin Assignment
PRELIMINARY
PRELIMINARY
INFORMATION
INFORMATION
Intel Graphics Clock Source
ICS604
X1/ICLK
VDDC
GND
14.3M
1 8
2
3
4
7
6
5
X2
VDDIO
24.576M
48M
Pin Descriptions
Number Name Type Description
1 X1/ICLK XI Crystal connection for 14.31818 MHz crystal, or clock input.
2 VDDC P Connect to +3.3V or +5V. +5 V recommended for lowest output noise (jitter).
3 GND P Connect to ground.
4 14.3M O Buffered crystal oscillator output clock.
5 48M O 48.0 MHz clock output for Intel graphics controller.
6 24.576M O 24.576 MHz clock output.
7 VDDIO P Connect to +3.3 V or +5 V. Cannot be greater than VDDC.
8 X2 XO 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 µF 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 Ω terminating resistor can be used next
to the output pins when driving 50 Ω 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).
MDS 604 A 2 Revision 022499 Printed 11/14/00
Integrated Circuit Systems • 525 Race Street • San Jose • CA • 95126 •(408)295-9800tel•(408)295-9818fax
Page 3
PRELIMINARY
ABSOLUTE MAXIMUM RATINGS (note 1)
DC CHARACTERISTICS (VDDC = 5 V unless otherwise noted)
AC CHARACTERISTICS (VDDC = 5 V unless otherwise noted)
PRELIMINARY
INFORMATION
INFORMATION
ICS604
Intel Graphics Clock Source
Electrical Specifications
Parameter Conditions Minimum Typical Maximum Units
Supply Voltage, VDDC or VDDIO Referenced to GND 7 V
Inputs Referenced to GND -0.5 VDDC+0.5 V
Clock Outputs Referenced to GND -0.5 VDDC+0.5 V
Ambient Operating Temperature 0 70 C
Soldering Temperature Max of 10 seconds 260 C
Storage temperature -65 150 C
Operating Voltage, VDDC 3 5.5 V
Operating Voltage, VDDIO 3 VDDC V
Input High Voltage, VIH. Clock input ICLK (Pin 1) (VDDIO/2)+1 VDDIO/2 V
Input Low Voltage, VIL. Clock input ICLK (Pin 1) VDDIO/2 (VDDIO/2)-1 V
Output High Voltage, VOH IOH=-8 mA VDDIO-0.4 V
Output High Voltage, VOH IOH=-25 mA 2.4 V
Output Low Voltage, VOL IOL=25 mA 0.4 V
IDD Operating Supply Current No load 18 mA
Short Circuit Current Output clocks 100 mA
Input Frequency, crystal input 14.31818 MHz
Input Frequency, clock input 14.31818 MHz
Actual mean frequency error vs target 48.0 MHz 0 ppm
24.576 MHz 32 ppm
Output Clock Rise Time 0.8 to 2.0V 1 ns
Output Clock Fall Time 2.0 to 0.8V 1 ns
Output Clock Duty Cycle at VDDIO/2 40 60 %
Absolute Clock Period Jitter, deviation 48.0 MHz ±250 ps
from mean. VDDC = 5 V, VDDIO = 3.3 V 24.576 MHz ±125 ps
Absolute Clock Period Jitter, deviation 48.0 MHz ±350 ps
from mean. VDDC = 3.3 V, VDDIO = 3.3 V 24.576 MHz ±160 ps
One Sigma Clock Period Jitter, 48.0 MHz 90 ps
VDDC = 5 V, VDDIO = 3.3 V 24.576 MHz 40 ps
One Sigma Clock Period Jitter, 48.0 MHz 110 ps
VDDC = 3.3 V, VDDIO = 3.3 V 24.576 MHz 50 ps
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.
MDS 604 A 3 Revision 022499 Printed 11/14/00
Integrated Circuit Systems • 525 Race Street • San Jose • CA • 95126 •(408)295-9800tel•(408)295-9818fax
Page 4
PRELIMINARY
Inches
Millimeters
PRELIMINARY
Package Outline and Package Dimensions
E H
INFORMATION
INFORMATION
Intel Graphics Clock Source
8 pin SOIC
ICS604
Q
Pin 1
e
D
Symbol Min Max Min Max
A 0.055 0.068 1.397 1.7272
b 0.013 0.019 0.330 0.483
D 0.185 0.200 4.699 5.080
h x 45°
A
c
b
E 0.150 0.160 3.810 4.064
H 0.225 0.245 5.715 6.223
e
h 0.015 0.381
Q 0.004 0.01 0.102 0.254
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.
MDS 604 A 4 Revision 022499 Printed 11/14/00
Integrated Circuit Systems • 525 Race Street • San Jose • CA • 95126 •(408)295-9800tel•(408)295-9818fax
Ordering Information
Part/Order Number Marking Package Temperature
ICS604M ICS604M 8 pin SOIC 0 - 70 C
ICS604MT ICS604M 8 pin SOIC on tape and reel 0 - 70 C
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