ICS604MT [ICSI]
Intel Graphics Clock Source; 英特尔图形时钟源
| 型号： | ICS604MT |
| 厂家： | 
INTEGRATED CIRCUIT SOLUTION INC |
| 描述： | Intel Graphics Clock Source |
| 文件： | 总4页 (文件大小：63K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PRELIMINARY INFORMATION
PRELIMINARY INFORMATION
ICS604
Intel Graphics Clock Source
Description
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
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.
• Low jitter
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.
• 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
Output
PLL
Clock
48 MHz
Buffer
Synthesis
and Control
Circuitry
Output
Buffer
24.576 MHz
14.318 MHz
14.318 MHz
crystal or clock
X1/ICLK
Crystal
Oscillator
Output
Buffer
X2
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
PRELIMINARY INFORMATION
PRELIMINARY INFORMATION
ICS604
Intel Graphics Clock Source
Pin Assignment
1
8
7
6
5
X2
X1/ICLK
2
3
4
VDDC
VDDIO
24.576M
48M
GND
14.3M
Pin Descriptions
Number
Name
X1/ICLK
VDDC
GND
Type Description
1
2
3
4
5
6
7
8
XI
P
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.
P
14.3M
48M
O
Buffered crystal oscillator output clock.
O
48.0 MHz clock output for Intel graphics controller.
24.576 MHz clock output.
24.576M
VDDIO
X2
O
P
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.
XO
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 Wterminating resistor can be used next
to the output pins when driving 50 Wlines. 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 = (C -6)*2, where C is the crystal load capacitance in pF. For a clock
L
L
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
PRELIMINARY INFORMATION
PRELIMINARY INFORMATION
ICS604
Intel Graphics Clock Source
Electrical Specifications
Parameter
Conditions
Minimum
Typical
Maximum
Units
ABSOLUTE MAXIMUM RATINGS (note 1)
Supply Voltage, VDDC or VDDIO
Inputs
Referenced to GND
7
VDDC+0.5
VDDC+0.5
70
V
V
V
C
C
C
Referenced to GND
Referenced to GND
-0.5
-0.5
0
Clock Outputs
Ambient Operating Temperature
Soldering Temperature
Storage temperature
Max of 10 seconds
260
-65
150
DC CHARACTERISTICS (VDDC = 5 V unless otherwise noted)
Operating Voltage, VDDC
3
3
5.5
V
V
Operating Voltage, VDDIO
VDDC
Input High Voltage, VIH. Clock input
Input Low Voltage, VIL. Clock input
Output High Voltage, VOH
Output High Voltage, VOH
Output Low Voltage, VOL
ICLK (Pin 1)
ICLK (Pin 1)
IOH=-8 mA
IOH=-25 mA
IOL=25 mA
No load
(VDDIO/2)+1 VDDIO/2
V
VDDIO/2 (VDDIO/2)-1
V
VDDIO-0.4
2.4
V
V
0.4
V
IDD Operating Supply Current
Short Circuit Current
18
mA
mA
Output clocks
100
AC CHARACTERISTICS (VDDC = 5 V unless otherwise noted)
Input Frequency, crystal input
14.31818
14.31818
0
MH z
MH z
ppm
ppm
ns
Input Frequency, clock input
Actual mean frequency error vs target
48.0 MHz
24.576 MHz
0.8 to 2.0V
2.0 to 0.8V
at VDDIO/2
48.0 MHz
32
Output Clock Rise Time
1
Output Clock Fall Time
1
ns
Output Clock Duty Cycle
40
60
%
Absolute Clock Period Jitter, deviation
±250
±125
±350
±160
90
ps
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
ps
ps
ps
One Sigma Clock Period Jitter,
VDDC = 5 V, VDDIO = 3.3 V
One Sigma Clock Period Jitter,
VDDC = 3.3 V, VDDIO = 3.3 V
48.0 MHz
ps
24.576 MHz
48.0 MHz
40
ps
110
50
ps
24.576 MHz
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
PRELIMINARY INFORMATION
PRELIMINARY INFORMATION
ICS604
Intel Graphics Clock Source
Package Outline and Package Dimensions
8 pin SOIC
E
H
Inches
Millimeters
Min Max
0.055 0.068 1.397 1.7272
Pin 1
Symbol Min
Max
A
b
0.013 0.019 0.330
0.185 0.200 4.699
0.150 0.160 3.810
0.225 0.245 5.715
0.483
5.080
4.064
6.223
D
E
H
e
h x 45°
D
.050 BSC
0.015
0.01
1.27 BSC
A
Q
h
0.381
0.254
c
Q
0.004
0.102
b
e
Ordering Information
Part/Order Number
ICS604M
Marking
ICS604M
ICS604M
Package
8 pin SOIC
8 pin SOIC on tape and reel
Temperature
0 - 70 C
ICS604MT
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.
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
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