參數(shù)資料
型號： CY28158
廠商： Cypress Semiconductor Corp.
英文描述： Spread Spectrum Timing Solution for Serverworks Chipset
中文描述： 擴(kuò)頻Serverworks芯片組時(shí)序解決方案
文件頁數(shù)： 1/10頁
文件大?。?/td> 220K
代理商： CY28158
Spread Spectrum Timing Solution for Serverworks Chipset
CY28158
Cypress Semiconductor Corporation
Document #: 38-07039 Rev. *B
3901 North First Street
San Jose
CA 95134
408-943-2600
Revised June 25, 2004
Features
Maximized EMI suppression using Cypress’s spread
spectrum technology
Based on Industry Standard CK133 Pinout with all out-
puts compliant to CK98 specifications
0.5% downspread outputs deliver up to 10dB lower EMI
6 skew-controlled copies of CPU output
6 copies of PCI output (synchronous w/CPU output)
2 copies of 66 MHz fixed frequency 3.3V clock
3 copies of 16.67 MHz IOAPIC clock, synchronous to
CPU clock
1 copy of 48 MHz USB output
2 copies of 14.31818 MHz reference clock
Programmable to 133 or 100 MHz operation
Power management control pins for clock stop and
shut down
Available in 56-pin SSOP
Key Specifications
Supply Voltages:......................................V
DD33
= 3.3V ± 5%
................................................................V
DD25
= 2.5V ± 5%
CPU Output Jitter: ....................................................<150 ps
CPU Output Skew: ....................................................<175 ps
CPU to 3V66 Output Offset: 0.0 to1.5 ns (CPU leads)
CPU to IOAPIC Output Offset 1.5 to 4.0 ns (CPU leads)
CPU to PCI Output Offset................. 0 to 4.0 ns (CPU leads)
Table 1. Pin Selectable Frequency.
SEL133/100#
1
0
CPU0:5 (MHz)
133
100
PCI
33.3
33.3
Block Diagram
Pin Configuration
GND_REF
REF0
REF1
VDD_REF
X1
X2
GND_PCI
GND_PCI
PCI_F
VDD_PCI
PCI1
PCI2
GND_PCI
PCI3
PCI4
VDD_PCI
VDD_PCI
PCI5
GND_PCI
GND_3V66
GND_3V66
VDD_3V66
VDD_3V66
GND_3V66
3V66_0
3V66_1
VDD_3V66
SEL133/100#
C
VDD_IOAPIC
IOAPIC2
IOAPIC1
IOAPIC0
GND_IOAPIC
VDD_CPU
CPU5
CPU4
GND_CPU
VDD_CPU
CPU3
CPU2
GND_CPU
VDD_CPU
CPU1
CPU0
GND_CPU
VDDA
GNDA
PCI_STOP#
CPU_STOP#
PWR_DWN#
SPREAD#
SEL1
SEL0
VDD_48MHZ
48MHZ
GND_48MHZ
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
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
REF0:1
CPU0:5
3V66_0:1
XTAL
OSC
PLL 1
SPREAD#
SEL0
SEL1
SEL133/100#
X2
X1
PCI_F
PCI1:5
IOAPIC0:2
PLL2
STOP
Clock
Logic
Power
Down
Logic
Tristate
Logic
CPU_STOP#
÷2/÷1.5
STOP
Clock
Logic
÷2
STOP
Clock
Logic
÷2
2
6
2
1
5
3
1
PCI_STOP#
PWRDWN#
48MHz
相關(guān)PDF資料
PDF描述
CY28158OXC Spread Spectrum Timing Solution for Serverworks Chipset
CY28158OXCT Spread Spectrum Timing Solution for Serverworks Chipset
CY28158PVC Spread Spectrum Timing Solution for Serverworks Chipset
CY28158PVCT Spread Spectrum Timing Solution for Serverworks Chipset
CY28301 Frequency Generator for Intel Integrated Chipset
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
CY28158OXC 功能描述:IC TIME SPREAD SPECTRUM 56-SSOP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 專用 系列:- 標(biāo)準(zhǔn)包裝:1,500 系列:- 類型:時(shí)鐘緩沖器/驅(qū)動器 PLL:是 主要目的:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 電源電壓:3.3V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:28-SSOP 包裝:帶卷 (TR) 其它名稱:93786AFT
CY28158OXCT 功能描述:IC TIME SPREAD SPECTRUM 56-SSOP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 專用 系列:- 標(biāo)準(zhǔn)包裝:1,500 系列:- 類型:時(shí)鐘緩沖器/驅(qū)動器 PLL:是 主要目的:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 電源電壓:3.3V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:28-SSOP 包裝:帶卷 (TR) 其它名稱:93786AFT
CY28158PVC 制造商:SPECTRALINEAR 制造商全稱:SPECTRALINEAR 功能描述:Spread Spectrum Timing Solution for Serverworks Chipset
CY28158PVCT 制造商:Cypress Semiconductor 功能描述:
CY28159 制造商:SPECTRALINEAR 制造商全稱:SPECTRALINEAR 功能描述:Clock Generator for Serverworks Grand Champion Chipset Applications
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