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CY28404OXCT 参数 Datasheet PDF下载

CY28404OXCT图片预览
型号: CY28404OXCT
PDF下载: 下载PDF文件 查看货源
内容描述: CK409兼容的时钟合成器 [CK409-Compliant Clock Synthesizer]
分类和应用: 晶体外围集成电路光电二极管时钟
文件页数/大小: 19 页 / 216 K
品牌: SPECTRALINEAR [ SPECTRALINEAR INC ]
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CY28404
CK409-Compliant Clock Synthesizer
Features
• Supports Intel Springdale/Prescott (CK409)
• Selectable CPU frequencies
• 3.3V power supply
• Nine copies of PCI clock
• Four copies 3V66 clock with optional VCH
• Three copies 48-MHz clock
• Three copies REF clock
• Two differential CPU clock pairs
• Support SMBus/I
2
C Byte, Word, and Block Read/Write
• Dial-A-Frequency
• Ideal Lexmark Spread Spectrum profile for maximum
electromagnetic interference (EMI) reduction
• 48-pin SSOP package
Table 1. Frequency Table
CPU
x2
3V66
x4
PCI
x9
REF
x3
48M
x3
Block Diagram
XIN
XOUT
Pin Configuration
VDD_REF
REF(0:2)
XTAL
OSC
PLL 1
PLL Ref Freq
Divider
Network
FS_(A:E)
VTT_PWRGD#
IREF
SEL24#
SELVCH
PLL2
2
MODE
PD#
**FS_A/REF_0
**FS_B/REF_1
VDD_REF
VDD_CPU
XIN
CPUT(0:1), CPUC(0:1)
XOUT
VSS_REF
*FS_C/PCIF0
*FS_D/PCIF1
*FS_E/PCIF2
VDD_PCI
VSS_PCI
VDD_3V66
PCI0
3V66_(0:2)
PCI1
PCI2
VDD_PCI
PCI3
PCIF(0:2)
VDD_PCI
VSS_PCI
PCI(0:5)
PCI4
PCI5
RESET#/PD#
3V66_3/VCH
*SEL24#/24_48MHz
DOT_48
USB_48
VDD_48MHz
VSS_48
DOT_48
USB_48
24_48MHz
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
REF_2
VDDA
VSSA
IREF
VSS_CPU
CPUT1
CPUC1
VDD_CPU
CPUT0
CPUC0
VSS
DNC***
DNC***
VDD
VTT_PWRGD#
SDATA*
SCLK*
3V66_0
3V66_1
VSS_3V66
VDD_3V66
3V66_2/MODE*
3V66_3/VCH/SELVCH**
VDD_48
~
SSOP-48
* 150k Internal Pull-up
** 150k Internal Pull-down
*** Do Not Connect
CY28404
2
SDATA
SCLK
I
2
C
Logic
WD
Timer
RESET#
Rev 1.0, November 22, 2006
2200 Laurelwood Road, Santa Clara, CA 95054
Tel:(408) 855-0555
Fax:(408) 855-0550
Page 1 of 19
www.SpectraLinear.com