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CY2220PVC-1 Datasheet

  • CY2220PVC-1

  • 133-MHz Spread Spectrum Clock Synthesizer/Driver With Differ...

  • 130.87KB

  • 11頁

  • CYPRESS

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CY2220
133-MHz Spread Spectrum Clock Synthesizer/Driver
with Differential CPU Outputs
Features
鈥?Compliant to Intel
廬
CK00 Clock Synthesizer/Driver
Specifications
鈥?Multiple output clocks at different frequencies
鈥?Four pairs of differential CPU outputs, up to 133 MHz
鈥?Ten synchronous PCI clocks
鈥?Two Memory Reference clocks, 180 degrees out of
phase
鈥?Four AGP and Hub Link clocks at 66 MHz
鈥?Two 48-MHz clocks
鈥?Two reference clocks at 14.318 MHz
鈥?Spread Spectrum clocking
鈥?31 kHz modulation frequency
鈥?Default is 鈥?.6%, which is recommended by Intel
鈥?Power-down features
鈥?Three Select inputs
鈥?Low-skew and low-jitter outputs
鈥?OE and Test Mode support
鈥?56-pin SSOP package
Enables ACPI compliant designs
Supports up to eight CPU clock frequencies
Meets tight system timing requirements at high frequency
Enables ATE and 鈥渂ed of nails鈥?testing
Widely available, standard package enables lower cost
Enables reduction of EMI and overall system cost
Benefits
Supports next generation Pentium
廬
processors using differen-
tial clock drivers
Motherboard clock generator
鈥?Support Multiple CPUs and a chipset
鈥?Support for PCI slots and chipset
鈥?Drives up to two Direct Rambus
鈩?/div>
Clock Generators
(DRCG)
鈥?Supports USB host controller and SuperI/O chip
鈥?Supports ISA slots and I/O chip
Logic Block Diagram
REFCLK [0鈥?]
Pin Configuration
SSOP
Top View
V
SSREF
REFCLK0/MultSel_0
REFCLK1/MultSel_1
V
DDREF
1
2
3
4
5
6
7
8
9
10
11
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
V
DDMEM
MemRef
MemRefB
V
SSMEM
SPREAD
CPUCLK_3
CPUCLK_3B
V
DDCPU
CPUCLK_2
CPUCLK_2B
V
SSCPU
CPUCLK_1
CPUCLK_1B
V
DDCPU
CPUCLK_0
CPUCLK_0B
V
SSCPU
I
REF
AV
DD
AV
SS
V
DD3V66
3V66_3
3V66_2
V
SS3V66
V
SS3V66
3V66_1
3V66_0
V
DD3V66
MultSel0
MultSel1
XTALIN
XTALOUT
14.318
MHz
OSC.
CPUCLK [0鈥?]
XTALIN
XTALOUT
V
SSPCI
CPU
PLL
Divider
and
Stop Logic
CPUCLKB [0鈥?]
MemRef, MemRefB
PCICLK [0鈥?] (33.33 MHz)
PCICLK_0
PCICLK_1
V
DDPCI
PCICLK_2
PCICLK_3
V
SSPCI
PCICLK_4
PCICLK_5
V
DDPCI
EPROM
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
SPREAD
PWR_DWN
SYS
PLL
3V66 [0鈥?] (66.67 MHz)
PCICLK_6
PCICLK_7
V
SSPCI
PCICLK_8
PCICLK_9
V
DDPCI
Sel133
V
SSUSB
USBCLK0/SelA
USBCLK1/SelB
V
DDUSB
PWR_DWN
USBCLK [0-1] (48 MHz)
Intel and Pentium are registered trademarks of Intel Corporation.
Direct Rambus is a trademark of Rambus, Inc.
Cypress Semiconductor Corporation
Document #: 38-07206 Rev. *A
鈥?/div>
3901 North First Street
鈥?/div>
San Jose
鈥?/div>
CA 95134 鈥?408-943-2600
Revised December 30, 2002
CY2220
SELA
SELB
SEL133
12
13

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