CY28346
Document #: 38-07331 Rev. *C Page 13 of 20
Table 8. PD# Functionality
PD# DRCG 66CLK (0:2) PCI_F/PCI PCI USB/DOT
1 66M 66Input 66Input/2 66Input/2 48M
0 LOW LOW LOW LOW LOW
CPU 133MHz
3V66
CPU# 133MHz
REF 14.318MHz
USB 48MHz
PCIF / APIC
33MHz
66In
66Buff[0,2]
PWRDWN#
66Buff1 / GMCH
400uS max<1.8mS
PCI 33MHz
30uS min
Figure 15. Power-down Deassertion Timing Waveforms—Buffered Mode
CY28346
Document #: 38-07331 Rev. *C Page 14 of 20
Maximum Ratings
[5]
Input Voltage Relative to V
SS
:.............................. V
SS
– 0.3V
Input Voltage Relative to V
DDQ
or AV
DD
: ............. V
DD
+ 0.3V
Storage Temperature:................................ –65°C to + 150°C
Operating Temperature:.................................... 0°C to +85°C
Maximum Power Supply:................................................ 3.5V
Current Accuracy
[6]
Parameter Conditions Configuration Load Min. Max.
Iout V
DD
= nominal (3.30V) M0 = 0 or 1 and Rr (see Table 1) Nominal test load for given
configuration
–7%
Inom
+ 7%
Inom
Iout V
DD
= 3.30 ± 5% All combinations of M0 or 1 and Rr
(see Table 1)
Nominal test load for given
configuration
–12%
Inom
+ 12%
Inom
DC Parameters (V
DD
= V
DDA
= 3.3V ±5%, TA = 0°C to +70°C)
Parameter Description Conditions Min. Typ. Max. Unit
I
DD
3.3V Dynamic Supply Current All frequencies at maximum values
[7]
280 mA
I
PD
3.3V Power-down Supply Current PD# asserted Note 8 mA
C
IN
Input Pin Capacitance 5pF
C
OUT
Output Pin Capacitance 6pF
L
PIN
Pin Inductance 7nH
C
XTAL
Crystal Pin Capacitance Measured from the X
IN
or X
OUT
pin to ground 30 36 42 pF
AC Parameters (V
DD
= V
DDA
= 3.3V ±5%, T
A
= 0°C to +70°C)
Parameter Description
66 MHz 100 MHz 133 MHz 200 MHz
Unit NotesMin. Max. Min. Max. Min. Max. Min. Max.
Crystal
T
DC
X
IN
Duty Cycle 47.5 52.5 47.5 52.5 47.5 52.5 47.5 52.5 % 9, 10, 11
T
PERIOD
X
IN
period 69.84 71.0 69.84 71.0 69.84 71.0 69.84 71.0 ns 9, 12,
13, 10
V
HIGH
X
IN
HIGH Voltage 0.7V
DD
V
DD
0.7V
DD
V
DD
0.7V
DD
V
DD
0.7V
DD
V
DD
V
V
LOW
X
IN
LOW Voltage 0 0.3V
DD
00.3V
DD
00.3V
DD
00.3V
DD
V
T
R
/ T
F
X
IN
Rise and Fall Times 10.0 10.0 10.0 10.0 ns 14
T
CCJ
X
IN
Cycle to Cycle Jitter 500 500 500 500 ps 12, 15,
10
CPU at 0.7V Timing
T
DC
CPUT and CPUC Duty
Cycle
45 55 45 55 45 55 45 55 % 15, 16,
19
T
PERIOD
CPUT and CPUC
Period
14.85 15.3 9.85 10.2 7.35 7.65 4.85 5.1 ns 15, 16,
19
T
SKEW
Any CPU to CPU Clock
Skew
100 100 100 100 ps 12, 15,
16
Notes:
5. Multiple Supplies: The Voltage on any input or I/O pin cannot exceed the power pin during power-up. Power supply sequencing is NOT required.
6. Inom refers to the expected current based on the configuration of the device.
7. All outputs loaded as per maximum capacitive load table.
8. Absolute value = ((Programmed CPU Iref) × (2)) + 10 mA.
9. This parameter is measured as an average over 1 µs duration, with a crystal center frequency of 14.31818 MHz.
10. When Xin is driven from an external clock source.
11. This is required for the duty cycle on the REF clock out to be as specified. The device will operate reliably with input duty cycles up to 30/70 but the REF clock
duty cycle will not be within data sheet specifications.
12. All outputs loaded as perTable 9 below.
13. Probes are placed on the pins and measurements are acquired at 1.5V for 3.3V signals (see test and measurement set-up section of this data sheet).
14. Measured between 0.2V
DD
and 0.7V
DD
.
15. This measurement is applicable with Spread ON or Spread OFF.
16. Measured at crossing point (Vx) or where subtraction of CLK–CLK# crosses 0V Measured from V
OL
= 0.175V to V
OH
= 0.525V.
17. Measured from V
OL
= 0.175V to V
OH
= 0.525V.
18. Determined as a fraction of 2*(Trise–Tfall)/ (Trise+Tfall).
19. Test load is Rta = 33.2, Rd = 49.9.
CY28346
Document #: 38-07331 Rev. *C Page 15 of 20
T
CCJ
CPU Cycle to Cycle
Jitter
150 150 150 150 ps 15, 16,
19
T
R
/T
F
CPUT and CPUC Rise
and Fall Times
175 700 175 700 175 700 175 700 ps 15, 17,
20
Rise/Fall Matching 20% 20% 20% 20% 17, 18,
19
DeltaT
R
Rise Time Variation 125 125 125 125 ps 17, 19
DeltaT
F
Fall Time Variation 125 125 125 125 ps 17, 19
V
CROSS
Crossing Point Voltage
at 0.7V Swing
280 430 280 430 280 430 280 430 mV 15, 19
CPU at 1.0V Timing
T
DC
CPUT and CPUC Duty
Cycle
45 55 45 55 45 55 45 55 % 15, 16
T
PERIOD
CPUT and CPUC
Period
14.85 15.3 9.85 10.2 7.35 7.65 4.85 5.1 nS 15, 16
T
SKEW
Any CPU to Any CPU
Clock Skew
100 100 100 100 pS 12, 15,
16
T
CCJ
CPU Cycle to Cycle
Jitter
150 150 150 150 pS 12, 16
Differential
T
R
/T
F
CPUT and CPUC Rise
and Fall Times
175 467 175 467 175 467 175 467 ps 15, 20
SE–
DeltaSlew
Absolute Single- ended
Rise/Fall Waveform
Symmetry
325 325 325 325 ps 21, 22
V
CROSS
Cross Point at 1.0V
swing
510 760 510 760 510 760 510 760 mV 22
3V66
T
DC
3V66 Duty Cycle 45 55 45 55 45 55 45 55 % 12, 13
T
PERIOD
3V66 Period 15.0 15.3 15.0 15.3 15.0 15.3 15.0 15.3 ns 9, 12, 13
T
HIGH
3V66 HIGH Time 4.95 4.95 4.95 4.95 ns 23
T
LOW
3V66 LOW Time 4.55 4.55 4.55 4.55 ns 24
T
R
/T
F
3V66 Rise and Fall
Times
0.5 2.0 0.5 2.0 0.5 2.0 0.5 2.0 ns 25
T
SKEW
Unbuffered
3V66 to 3V66 Clock
Skew
500 500 500 500 ps 12, 13
T
SKEW
Buffered
3V66 to 3V66 Clock
Skew
250 250 250 250 ps 12, 13
T
CCJ
DRCG Cycle to Cycle
Jitter
250 250 250 250 ps 12, 13
Notes:
20. Measurement taken from differential waveform, from –0.35V to +0.35V.
21. Measurements taken from common mode waveforms, measure rise/fall time from 0.41 to 0.86V. Rise/fall time matching is defined as “the instantaneous difference
between maximum CLK rise (fall) and minimum CLK# fall (rise) time or minimum CLK rise (fall) and maximum CLK# fall (rise) time.” This parameter is designed
form waveform symmetry.
22. Measured in absolute voltage, i.e., single-ended measurement.
23. THIGH is measured at 2.4V for non-host outputs.
24. TLOW is measured at 0.4V for all outputs.
25. Probes are placed on the pins, and measurements are acquired between 0.4V and 2.4V for 3.3V signals (see test and measurement set-up section of this data
sheet).
AC Parameters (V
DD
= V
DDA
= 3.3V ±5%, T
A
= 0°C to +70°C) (continued)
Parameter Description
66 MHz 100 MHz 133 MHz 200 MHz
Unit NotesMin. Max. Min. Max. Min. Max. Min. Max.

CY28346OXC

Mfr. #:
Manufacturer:
Cypress Semiconductor
Description:
Clock Synthesizer / Jitter Cleaner NB clk for Intel 830M & 845 chipsets (CK-408)
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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