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参数资料
| 型号： | 935269451112 |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 133 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO56 |
| 封装： | 7.50 MM, PLASTIC, MO-118, SOT-371-1, SSOP-56 |
| 文件页数： | 4/16页 |
| 文件大小： | 105K |
| 代理商： | 935269451112 |
Philips Semiconductors
Product specification
PCK2014A
CK98 (100/133 MHz) spread spectrum
system clock generator
2001 Apr 02
12
AC WAVEFORMS
VM = 1.25 V @ VDDQ2 and 1.5 V @ VDDQ3
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
1.5V
1.25V
VDDQ2
VSS
VDDQ3
VSS
THPOFFSET
SW00354
3v66
@66MHz
CPU leads 3V66
Figure 1. CPUCLK to 3V66 offset
1.5V
PCICLK
@ 33MHz
VDDQ3
VSS
VDDQ3
VSS
THPOFFSET
SW00356
3V66 leads PCICLK
3V66
@ 66MHz
Figure 2. 3V66 to PCI offset
CPUCLK
@ 133MHz
1.25V
IOAPIC
@ 16.6MHz
VDDQ2
VSS
VDDQ2
VSS
THPOFFSET
SW00357
CPUCLK leads IOAPIC
Figure 3. CPU to IOAPIC offset
THKP
DUTY CYCLE
THKH
TRISE
TFALL
THKL
TPKP
TPKH
TRISE
TFALL
TPKL
2.5V CLOCKING
INTERFACE
3.3V CLOCKING
INTERFACE
(TTL)
2.0
1.25
0.4
2.4
1.5
0.4
SW00242
Figure 4. 2.5V/3.3V clock waveforms
VDDQ2
2.5 V MEASUREMENT POINTS
VOH = 2.0 V
1.25 V
VOL = 0.4 V
VSS
SYSTEM
MEASUREMENT
POINTS
VDDQ3
3.3 V MEASUREMENT POINTS
VOH = 2.4 V
1.5 V
VOL = 0.4 V
VSS
COMPONENT
MEASUREMENT
POINTS
SYSTEM
MEASUREMENT
POINTS
COMPONENT
MEASUREMENT
POINTS
SW00822
Figure 5. Component versus system measure points
tPLZ
tPZL
VI
SEL133/100,
SEL1, SEL0
GND
VDD
OUTPUT
LOW-to-OFF
OFF-to-LOW
VOL
VOH
OUTPUT
HIGH-to-OFF
OFF-to-HIGH
VSS
outputs
enabled
outputs
enabled
outputs
disabled
tPHZ
VM
tPZH
VX
VY
SW00454
Figure 6. 3-State enable and disable times
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