ETC CY24115

CY24115
MediaClock™
Mini Disc Clock Generator
Features
Benefits
• Integrated phase-locked loop (PLL)
High-performance PLL tailored for mini disc applications
• Low-jitter, high-accuracy outputs
Meets critical timing requirements in complex system designs
• 3.3V operation
Enables application compatibility
• 8-pin SOIC package
Industry standard package saves on board space
Part Number
Outputs
Input Frequency Range
Output Frequencies
CY24115-1
1
1 MHz–30 MHz
45.1584 MHz/90.3168 MHz (selectable)
CY24115-2
1
1 MHz–30 MHz
90.3168 MHz/180.6336 MHz (selectable)
Logic Block Diagram
XIN
OSC
Φ
Q
XOUT
VCO
OUTPUT
DIVIDERS
CLKA
P
PLL
FS0
FREQUENCY
TABLE
FS1
CLKSEL
VDD
VSS
Table 1. CLKSEL Function CY24115-1
Pin Configurations
CLKSEL
CLKA
Unit
PPM Error
0
45.1584
MHz
0
1
90.3168
MHz
Table 2. CLKSEL Function, CY24115-2
CY24115
8-pin SOIC
XIN
1
8
XOUT
VDD
CLKSEL
2
7
FS1
3
6
FS0
VSS
4
5
CLKA
Cypress Semiconductor Corporation
Document #: 38-07275 Rev. *B
0
CLKSEL
CLKA
Unit
PPM Error
0
90.3168
MHz
0
1
180.6336
MHz
0
Table 3. Input Frequency Function, CY24115-1 and CY24115-2
•
FS1
FS0
Xtal Input
Unit
0
0
2.8224
MHz
0
1
5.6448
MHz
1
0
11.2896
MHz
1
1
22.5792
MHz
3901 North First Street
•
San Jose
•
CA 95134 • 408-943-2600
Revised December 14, 2002
CY24115
Pin Summary
Pin Name
Pin Number
Pin Description
XIN
1
Reference input (crystal or external input)
VDD
2
3.3V voltage supply
CLKSEL
3
CLKA Select Line
For 24115-1, see Table 1 for output values
For 24115-2, see Table 2 for output values
VSS
4
Ground
CLKA
5
24115-1: 45.1584 MHz/90.3168 MHz (frequency selectable). See Table 1.
24115-2: 90.3168 MHz/180.6336 MHz (frequency selectable). See Table 2.
FS0
6
Input Frequency FS0. See Table 3.
FS1
7
Input Frequency FS1. See Table 3.
XOUT[1]
8
Reference Output
Absolute Maximum Conditions
Parameter
Description
Min.
Max.
Unit
Supply Voltage
–0.5
7.0
V
TS
Storage Temperature[2]
–65
125
°C
TJ
Junction Temperature
125
°C
Digital Inputs
VSS – 0.3
VDD + 0.3
V
Digital Outputs Referred to VDD
VSS – 0.3
VDD + 0.3
VDD
Electrostatic Discharge
V
2
kV
Recommended Operating Conditions
Parameter
VDD
TA
CLOAD
fREF
Description
Operating Voltage
Ambient Temperature
Min.
Typ.
Max.
3.14
3.3
3.47
V
0
70
°C
15
pF
2.8224
22.5792
MHz
Max. Load Capacitance
Reference Frequency
t1
Driven Reference Edge Rate
0.8
DCIN
Driven Reference Duty Cycle
40
CIN
XIN, XOUT capacitance
tPU
Power-up time for all VDD's to
reach minimum specified voltage
(power ramps must be monotonic)
Unit
V/ns
60
%
12
pF
0.05
500
ms
DC Electrical Characteristics
Parameter
Min.
Typ.
IOH
Output High Current
Name
VOH = VDD – 0.5, VDD = 3.3V (source)
Description
12
24
12
24
IOL
Output Low Current
VOL = 0.5, VDD = 3.3V (sink)
CIN
Input Capacitance
CLKSEL, FS0, FS1, excludes XIN, XOUT
VIL
Input Low Voltage
VIH
Input High Voltage
IIZ
Input Leakage Current
IDD
Supply Current
Max.
mA
mA
7
30
70
pF
% of VDD
% of VDD
µA
5
Sum of Core and Output Current
Unit
35
mA
Notes:
1. Float XOUT if XIN is externally driven.
2. Rated for 10 years.
Document #: 38-07275 Rev. *B
Page 2 of 5
CY24115
AC Electrical Characteristics (VDD = 3.3V)
Parameter[3]
DC
Name
Description
Min.
Typ.
Max.
55
Output Duty Cycle
Duty Cycle is defined in Figure 1, 50% of VDD
45
50
t3
Rising Edge Slew Rate
Output Clock Rise Time, 20%–80% of VDD
0.8
1.4
t4
Falling Edge Slew Rate
Output Clock Fall Time, 80%–20% of VDD
0.8
1.4
t9
Clock Jitter
Peak to Peak period jitter
t10
PLL Lock Time
Unit
%
V/ns
V/ns
350
ps
3
ms
Notes:
3. Not 100% tested.
Test Circuit
VDD
CLK out
0.1 µF
CLOAD
OUTPUTS
GND
t1
t2
CLK
t3
t4
80
50%
50%
CLK
Figure 1. Duty Cycle Definition; DC = t2/t1
20
Figure 2. Rise and Fall Time Definitions
Ordering Information
Ordering Code
Package Name
Package Type
Operating Range
Operating Voltage
CY24115SC-1
S8
8-pin SOIC
Commercial
3.3V
CY24115SC-2
S8
8-pin SOIC
Commercial
3.3V
Document #: 38-07275 Rev. *B
Page 3 of 5
CY24115
Package Diagram
8-lead (150-mil) SOIC S8
51-85066-A
MediaClock is a trademark of Cypress Semiconductor. All product and company names mentioned in this document are the
trademarks of their respective holders.
Document #: 38-07275 Rev. *B
Page 4 of 5
© Cypress Semiconductor Corporation, 2002. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use
of any circuitry other than circuitry embodied in a Cypress Semiconductor product. Nor does it convey or imply any license under patent or other rights. Cypress Semiconductor does not authorize
its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress
Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges.
CY24115
Document Title: CY24115 MediaClock™ Mini Disc Clock Generator
Document Number: 38-07275
REV.
ECN NO.
Issue
Date
Orig. of
Change
Description of Change
**
110767
02/06/02
CKN
New Data Sheet
*A
113515
04/30/02
CKN
Changed from Preliminary to Final
P. 2 in Electrical Characteristics table added (source) to row 1 and (sink) to
row 2
*B
121884
12/14/02
RBI
Power up requirements added to Operating Conditions Information
Document #: 38-07275 Rev. *B
Page 5 of 5