ICS614-01
16 pin Intel Graphics Clock Source
MDS 614-01 B
1
Revision 020199
Printed 11/14/00
Integrated Circuit Systems 525 Race Street San Jose CA95126 (408) 295-9800tel (408) 295-9818fax
I C R O
C
LOC K
PRELIMINARY INFORMATION
The ICS614-01 is a low cost, low jitter, high
performance clock synthesizer for Intel's i752
graphics systems. It includes frequencies for video
encoders and decoders. Using analog Phase-
Locked Loop (PLL) techniques, the device accepts
a 27 MHz fundamental mode crystal or clock
input to produce multiple output clocks. The chip
provides highly accurate video encoder and
decoder clocks, as well as the 48 MHz necessary
for the Intel graphics processor, and can produce a
24.576 MHz audio clock.
See the ICS604 or ICS513 for 8 pin devices that
supply 48 MHz from a 14.31818 MHz input.
Block Diagram
Description
Features
Packaged in 16 pin SOIC
Uses fundamental 27 MHz input crystal
Supports Intel i752 graphics chip, popular video
encoders and decoders, and audio
Low jitter - 50 ps one sigma
Output Enable function tri-states outputs
25mA output drive capability at TTL levels
Advanced, low power, sub-micron CMOS process
5V10% core voltage. Inputs and outputs can run
3.3V (or 5V) for easy system interface
Crystal
Oscillator
VDD
GND
Clock Synthesis
and Control
Circuitry
Output
Buffer
27 MHz crystal
Output
Buffer
48 MHz
Output
Buffer
ACLK
X2
X1
2
28.636 MHz or
35.4689 MHz
Output Enable (all outputs)
Output
Buffer
27 MHz
ASEL1:0
2
DSEL
Output
Buffer
13.5 MHz
Output
Buffer
14.318 MHz or
17.7344 MHz
2
2
VDDIO
ICS614-01
16 pin Intel Graphics Clock Source
MDS 614-01 B
2
Revision 020199
Printed 11/14/00
Integrated Circuit Systems 525 Race Street San Jose CA95126 (408) 295-9800tel (408) 295-9818fax
I C R O
C
LOC K
PRELIMINARY INFORMATION
Pin Descriptions
Key: I = Input; O = output; P = power supply connection; XI, XO = crystal connections.
Pin Assignment
Number
Name
Type
Description
1
OE
I
Output Enable. Tri-states all output clocks when low. All running when high (VDDIO).
2
X2
XO
Crystal connection. Connect to a 27 MHz fundamental parallel mode crystal.
3
X1/ICLK
XI
Crystal connection. Connect to a 27 MHz fundamental parallel mode crystal, or clock
4
VDD
P
Connect to +5V.
5
GND
P
Connect to ground.
6
DSEL
I
Input select. Determines DCLK and DCLK/2 per table above. Must be
VDDIO.
7
27M
O
Buffered crystal oscillator 27 MHz clock output. Amplitude = VDDIO.
8
DCLK/2
O
NTSC or PAL 4X subcarrier frequency per table above. Amplitude = VDDIO.
9
48M
O
48.00 MHz clock output for Intel graphics processor. Amplitude = VDDIO.
10
DCLK
O
NTSC or PAL 8X subcarrier frequency per table above. Amplitude = VDDIO.
11
ACLK
O
Audio clock, or Square Pixel clock, per table above. Amplitude = VDDIO.
12
GND
P
Connect to ground.
13
VDDIO
P
Connect to +5V or +3.3V. Amplitude of output clocks will match this voltage.
14
13.5M
O
Buffered crystal oscillator divided by two 13.5 MHz clock output. Amplitude = VDDIO.
15
ASEL0
I
Input select 0 for ACLK. Determines ACLK frequency per table above. Must be
VDDIO.
16
ASEL1
I
Input select 1 for ACLK. Determines ACLK frequency per table above. Must be
VDDIO.
ICS614-01
All Clock frequencies are in MHz.
0=connect directly to ground
1=connect directly to VDDIO
1
8
9
16
2
3
4
5
6
7
10
11
12
13
14
15
ACLK
13.5M
ASEL0
VDDIO
GND
OE
X2
27M
DSEL
VDD
GND
X1/ICLK
DCLK/2
DCLK
ASEL1
48MHz
ASEL1
ASEL0
ACLK
0
0
Off
0
1
29.4923 MHz
1
0
24.5454 MHz
1
1
24.576 MHz
DSEL
DCLK
DCLK/2
0
35.4689
17.73445
1
28.63636
14.31818
DCLK Select Table for NTSC/PAL
ACLK Select Table for Audio and Square Pixel
ICS614-01
16 pin Intel Graphics Clock Source
MDS 614-01 B
3
Revision 020199
Printed 11/14/00
Integrated Circuit Systems 525 Race Street San Jose CA95126 (408) 295-9800tel (408) 295-9818fax
I C R O
C
LOC K
PRELIMINARY INFORMATION
Parameter
Conditions
Minimum
Typical
Maximum
Units
ABSOLUTE MAXIMUM RATINGS (note 1)
ABSOLUTE MAXIMUM RATINGS (note 1)
Supply voltage, VDD
Referenced to GND
7
V
Inputs and Clock Outputs
Referenced to GND
-0.5
VDD+0.5
V
Ambient Operating Temperature
0
70
C
Soldering Temperature
Max of 10 seconds
260
C
Storage temperature
-65
150
C
DC CHARACTERISTICS (VDD = 5.0V unless noted)
DC CHARACTERISTICS (VDD = 5.0V unless noted)
Operating Voltage, VDD
4.50
5.50
V
Operating Voltage, VDDIO
3.13
VDD
V
Input High Voltage, VIH, X1 pin only
3.5
2.5
V
Input Low Voltage, VIL, X1 pin only
2.5
1.5
V
Input High Voltage, VIH
2
V
Input Low Voltage, VIL
0.8
V
Output High Voltage, VOH
IOH=-25mA
2.4
V
Output Low Voltage, VOL
IOL=25mA
0.4
V
Output High Voltage, VOH, CMOS level
IOH=-8mA
VDD-0.4
V
Operating Supply Current, IDD
No Load
35
mA
Short Circuit Current
Each output
100
mA
Input Capacitance
OE, select pins
5
pF
VIN, VCXO control voltage
0
3
V
AC CHARACTERISTICS (VDD = 5.0V unless noted)
AC CHARACTERISTICS (VDD = 5.0V unless noted)
Input Frequency
27.000000
MHz
Input Crystal Accuracy
30
ppm
Output Clock Accuracy (all but PAL square pixel) Given exact input
0
1
ppm
Output Clock Rise Time
0.8 to 2.0V, no load
1.5
ns
Output Clock Fall Time
0.8 to 2.0V, no load
1.5
ns
Output Clock Duty Cycle
At VDD/2
40
60
%
Maximum Absolute Jitter, short term
150
ps
Maximum Jitter, one sigma
50
ps
Electrical Specifications
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.
ICS614-01
16 pin Intel Graphics Clock Source
MDS 614-01 B
4
Revision 020199
Printed 11/14/00
Integrated Circuit Systems 525 Race Street San Jose CA95126 (408) 295-9800tel (408) 295-9818fax
I C R O
C
LOC K
PRELIMINARY INFORMATION
While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems, Incorporated (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.
Package Outline and Package Dimensions
Ordering Information
Part/Order Number
Marking
Shipping packaging
Package
Temperature
ICS614M-01
ICS614M-01
tubes
16 pin narrow SOIC
0 to 70 C
ICS614M-01T
ICS614M-01
tape and reel
16 pin narrow SOIC
0 to 70 C
External Components/Crystal Selection
The ICS614-01 requires a minimum number of external components for proper operation. Decoupling
capacitors of 0.01 F should be connected between VDD and GND, one between pins 4 and 5, and one
between pins 13 and 12, as close to the part as possible. A series termination resistor of 33
may be used
for each clock output. The 27.000 MHz crystal must be connected as close to the chip as possible. The
crystal should be a fundamental mode, parallel resonant, 30 ppm or better. Do not use third overtone.
Crystal capacitors should be connected from pins X1 to ground and X2 to ground. In general, the value of
these capacitors is given by the following equation, where C
L
is the crystal load capacitance: Crystal caps
(pF) = (C
L
-6) x 2. So for a crystal with 16 pF load capacitance, two 20 pF caps can be used. For any given
board layout, ICS can measure the board capacitance and recommend the exact capacitance value to use.
b
D
E
H
e
Q
c
h x 45
A
Rev. 12308, version A . First publication, Preliminary.
Rev. 2019, version B. Added jitter, IDD specifications, showed VDDIO on pin 13, added i752 designation.
16 pin SOIC narrow
Inches
Inches
Millimeters
Millimeters
Symbol
Min
Max
Min
Max
A
0.055
0.070
1.397
1.778
b
0.013
0.019
0.330
0.483
c
0.007
0.010
0.191
0.254
D
0.385
0.400
9.779
10.160
E
0.150
0.160
3.810
4.064
H
0.225
0.245
5.715
6.223
e .050 BSC
.050 BSC
1.27 BSC
1.27 BSC
h
0.016
0.406
Q
0.004
0.01
0.102
0.254
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