PCK2020DL 데이터 시트보기 (PDF) - Philips Electronics
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PCK2020DL Datasheet PDF : 16 Pages
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Philips Semiconductors
CK00 (100/133MHz) spread spectrum
differential system clock generator
Product specification
PCK2020
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.
CPUCLK
@133MHz
1.25V
3v66
@66MHz
1.5V
THPOFFSET
CPU leads 3V66
Figure 1. Host clock
VDDQ2
VSS
VDDQ3
VSS
SW00569
COMPONENT
MEASUREMENT
2.5VOLT MEASURE POINTS
POINTS
VOH = 2.0V
VDDQ2
VIH = 1.7V
1.25V
VOL = 0.4V
VIL = 0.7V
VSS
COMPONENT
MEASUREMENT
3.3VOLT MEASURE POINTS
POINTS
VOH = 2.4V
VDDQ3
VIH = 2.0V
1.5V
VOL = 0.4V
VIL = 0.7V
VSS
SYSTEM
MEASUREMENT
POINTS
SYSTEM
MEASUREMENT
POINTS
SW00570
Figure 2. 3.3 V clock waveforms
VI
SEL1,
SEL0
VM
GND
VDD
OUTPUT
LOW-to-OFF
OFF-to-LOW
VOL
tPLZ
VX
tPHZ
tPZL
VM
tPZH
VOH
OUTPUT
VY
HIGH-to-OFF
OFF-to-HIGH
VSS
Outputs
enabled
Outputs
disabled
VM
Outputs
enabled
SW00571
Figure 3. State enable and disable times
2000 Nov 13
12
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