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
FEATURES
• 3.3 V operation
• Four differential CPU clock pairs
• Ten PCI clocks at 3.3 V
• Four 66 MHz clocks at 3.3 V
• Two 48 MHz clocks at 3.3 V
• Two 14.318 MHz reference clocks
• 100 or 133 MHz operation
• Power management control pins
• CPU clock skew less than 200 ps cycle-to-cycle
• CPU clock skew less than 150 ps pin-to-pin
• 1.5 ns to 3.5 ns delay on PCI pins
• Spread Spectrum capability
DESCRIPTION
The PCK2020 is a clock synthesizer/driver for a Pentium III and
other similar processors.
The PCK2020 has four differential pair CPU current source outputs,
two Mref clock outputs running at 1/2 the CPU clock frequency
depending on the state of SEL133/100 pin and four 3V66 clocks
running at 66 MHz. There are ten PCI clock outputs running at
33 MHz and two 48 MHz clocks. Finally, there are two 3.3 V
reference clocks at 14.318 MHz. All clock outputs meet Intel’s drive
strength, rise/fall times, jitter, accuracy, and skew requirements.
The part possesses a dedicated power-down input pin for power
management control. This input is synchronized on-chip and
ensures glitch-free output transitions.
PIN CONFIGURATION
VSSRef 1
Ref0/MultSel0 2
Ref1/MultSel1 3
VDD3.3Ref 4
XTAL_IN 5
XTAL_OUT 6
VSSPCI 7
PCICLK0 8
PCICLK1 9
VDD3.3PCI 10
PCICLK2 11
PCICLK3 12
VSSPCI 13
PCICLK4 14
PCICLK5 15
VDD3.3PCI 16
PCICLK6 17
PCICLK7 18
VSSPCI 19
PCICLK8 20
PCICLK9 21
VDD3.3PCI 22
SEL100/133 23
VSSUSB 24
48MHz0/SelA 25
48MHz1/SelB 26
VDD3.3USB 27
PWRDWN 28
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE (°C)
56-Pin Plastic SSOP
0 to +70
Intel and Pentium are registered trademarks of Intel Corporation.
ORDER CODE
PCK2020 DL
56 VDD3.3M
55 3VMref
54 3VMref_b
53 VSSM
52 SPREAD
51 CPUCLK0
50 CPUCLK0
49 VDD3.3CPU
48 CPUCLK1
47 CPUCLK1
46 VSSCPU
45 CPUCLK2
44 CPUCLK2
43 VDD3.3CPU
42 CPUCLK3
41 CPUCLK3
40 VSSCPU
39 I_REF
38 VDD3.3Core
37 VSSCore
36 VDD3.3
35 3V66_0
34 3V66_1
33 VSS
32 VSS
31 3V66_2
30 3V66_3
29 VDD3.3
SW00577
DRAWING NUMBER
SOT371-1
2000 Nov 13
2
853-2209 25006
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