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PDF PCK2021DGG Data sheet ( Hoja de datos )

Número de pieza PCK2021DGG
Descripción CK00 100/133 MHz spread spectrum differential system clock generator
Fabricantes NXP Semiconductors 
Logotipo NXP Semiconductors Logotipo



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INTEGRATED CIRCUITS
PCK2021
CK00 (100/133 MHz) spread spectrum
differential system clock generator
Product data
File under Integrated Circuits, ICL03
2001 Oct 11
Philips
Semiconductors

1 page




PCK2021DGG pdf
Philips Semiconductors
CK00 (100/133 MHz) spread spectrum differential
system clock generator
Product data
PCK2021
Table 1. Host swing select functions
MULTSEL0
MULTSEL1
BOARD
IMPEDANCE
0 0 60
0 0 50
0 1 60
0 1 50
1 0 60
1 0 50
1 1 60
1 1 50
0 0 30
0 0 25
0 1 30
0 1 25
1 0 30
1 0 25
1 1 30
1 1 25
NOTE:
The outputs are optimized for the configurations shown shaded.
IREF
RREF = 475 1%
IREF = 2.32 mA
RREF = 475 1%
IREF = 2.32 mA
RREF = 475 1%
IREF = 2.32 mA
RREF = 475 1%
IREF = 2.32 mA
RREF = 475 1%
IREF = 2.32 mA
RREF = 475 1%
IREF = 2.32 mA
RREF = 475 1%
IREF = 2.32 mA
RREF = 475 1%
IREF = 2.32 mA
RREF = 221 1%
IREF = 5 mA
RREF = 221 1%
IREF = 5 mA
RREF = 221 1%
IREF = 5 mA
RREF = 221 1%
IREF = 5 mA
RREF = 221 1%
IREF = 5 mA
RREF = 221 1%
IREF = 5 mA
RREF = 221 1%
IREF = 5 mA
RREF = 221 1%
IREF = 5 mA
IOH
IOH = 5*IREF
IOH = 5*IREF
IOH = 6*IREF
IOH = 6*IREF
IOH = 4*IREF
IOH = 4*IREF
IOH = 7*IREF
IOH = 7*IREF
IOH = 5*IREF
IOH = 5*IREF
IOH = 6*IREF
IOH = 6*IREF
IOH = 4*IREF
IOH = 4*IREF
IOH = 7*IREF
IOH = 7*IREF
VOH @ IREF = 2.32 mA
0.71 V
0.59 V
0.85 V
0.71 V
0.56 V
0.47 V
0.99 V
0.82 V
0.75 V
0.62 V
0.90 V
0.75 V
0.60 V
0.50 V
1.05 V
0.84 V
IOUT
IOUT
CONDITIONS
VDD = 3.3 V
VDD = 3.3 V ±5%
CONFIGURATION
All combinations;
see Table 1 above
All combinations;
see Table 1 above
LOAD
Nominal test load for
given configuration
Nominal test load for
given configuration
MIN.
–7% of IOH
see Table 1 above
–12% of IOH
see Table 1 above
MAX.
+7% of IOH
see Table 1 above
+12% of IOH
see Table 1 above
POWER-DOWN MODE
PWRDWN
HCLK/HCLKB
3V66
PCI
Asserts LOW
0 = Active
Host = 2*IREF
Host_bar = undriven
LOW
LOW
NOTE:
The differential outputs should have a voltage forced across them when power-down is asserted.
48MHz
LOW
REFCLK
LOW
SPREAD SPECTRUM FUNCTION
SPREAD #
1
0
FUNCTION
Host, PCI, and 3V66
No Spread
Host, PCI, and 3V66
spread t0.5%
48 MHz PLL
REFCLK
No Spread
No Spread
2001 Oct 11
5

5 Page





PCK2021DGG arduino
Philips Semiconductors
CK00 (100/133 MHz) spread spectrum differential
system clock generator
Product data
PCK2021
AC WAVEFORMS
VM = 1.25 V @ VDDL and 1.5 V @ VDD3
VX = VOL + 0.3 V
VY = VOH – 0.3 V
VOL and VOH are the typical output voltage drop that occur with the output load.
HOST CLK
50%
tPERIOD
50%
VOH
VSS
SW00962
Figure 1. HOST CLOCK
COMPONENT
MEASUREMENT
POINTS
VOH = 2.4 V
VOL = 0.4 V
VSS
VDDL
VIH = 2.0 V
1.5 V
VIL = 0.7 V
SYSTEM
MEASUREMENT
POINTS
Figure 2. 3.3 V clock waveforms
SW00668
VI
SEL1,
SEL0
GND
VM
VDD
OUTPUT
LOW-to-OFF
OFF-to-LOW
VOL
tPLZ
VX
tPZL
VM
VOH
OUTPUT
HIGH-to-OFF
OFF-to-HIGH
VSS
tPHZ
outputs
enabled
tPZH
VY
outputs
disabled
VM
outputs
enabled
SW00662
Figure 3. State enable and disable times
PULSE
GENERATOR
VI
RT
VDD
DUT
VO
CL
S1 2 VDD
Open
VSS
500
500
TEST
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
S1
Open
2 VDD
VSS
VDD = VDD3
Figure 4. Load circuitry for switching times
SW00963
2001 Oct 11
11

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