- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄379007 > CY28408ZCT (CYPRESS SEMICONDUCTOR CORP) Circular Connector; MIL SPEC:MIL-DTL-38999 Series III; Body Material:Metal; Series:TVS01; Number of Contacts:3; Connector Shell Size:9; Connecting Termination:Crimp; Circular Shell Style:Straight Receptacle; Body Style:Straight PDF資料下載
參數(shù)資料
| 型號(hào)： | CY28408ZCT |
| 廠商： | CYPRESS SEMICONDUCTOR CORP |
| 元件分類： | XO, clock |
| 英文描述： | Circular Connector; MIL SPEC:MIL-DTL-38999 Series III; Body Material:Metal; Series:TVS01; Number of Contacts:3; Connector Shell Size:9; Connecting Termination:Crimp; Circular Shell Style:Straight Receptacle; Body Style:Straight |
| 中文描述： | 166 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO56 |
| 封裝： | 6 X 14 MM, TSSOP2-56 |
| 文件頁(yè)數(shù)： | 6/19頁(yè) |
| 文件大?。?/td> | 212K |
| 代理商： | CY28408ZCT |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)當(dāng)前第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)
CY28408
Document #: 38-07617 Rev. **
Page 6 of 19
Spread Spectrum Clock Generation (SSCG)
Spread Spectrum is a modulation technique used to
minimizing EMI reduction generated by repetitive digital
signals. A clock presents the generated EMI energy at the
center frequency it is generating. Spread Spectrum distributes
this energy over a specific and controlled frequency bandwidth
therefore causing the average energy at any point in this band
to decrease in value. This technique is achieved by modulating
the clock away from its resting frequency by a certain
percentage (which also determines the amount of EMI
reduction). In this device, Spread Spectrum is enabled by
setting specific register bits in the SMBus control bytes.
Table 5
is a listing of the modes and percentages of Spread
Spectrum modulation that this device incorporates.
Table 5. Spread Spectrum
Byte 4: 3V66 Control Register
(all bits are read- and write-functional)
Bit
7
6
5
@Pup
0
0
1
Name
Description
SS2 Spread Spectrum control bit (0 = down spread, 1 = center spread)
Reserved
3V66_0 Output Enabled,
1 = enabled, 0 = disabled
3V66_1/VCH Output Enable
1 = enabled, 0 = disabled
3V66_5 Output Enable
1 = enabled, 0 = disabled
3V66_4 Output Enabled
1 = enabled, 0 = disabled
3V66_3 Output Enabled
1 = enabled, 0 = disabled
3V66_2 Output Enabled
1 = enabled, 0 = disabled
3V66_0
4
1
3V66_1/VCH
3
1
3V66_5
2
1
3V66_4
1
1
3V66_3
0
1
3V66_2
Byte 5: Spread Spectrum Control Register
(all bits are read and write functional)
Bit
7
6
5
4
3
2
1
0
@Pup
0
1
0
0
0
0
0
0
Name
Description
SS1 Spread Spectrum control bit
SS0 Spread Spectrum control bit
Reserved
Reserved
Reserved
48M_DOT edge rate control. When set to 1, the edge is slowed by 40%.
Reserved
USB edge rate control. When set to 1, the edge is slowed by 40%.
SS2
0
0
0
0
1
1
1
1
SS1
0
0
1
1
0
0
1
1
SS0
0
1
0
1
0
1
0
1
Spread Mode
Down
Down
Down
Down
Center
Center
Center
Center
Spread%
+0.00, –0.25
+0.00, –0.50
+0.00, –0.75
+0.00, –1.00
+0.13, –0.13
+0.25, –0.25
+0.37, –0.37
+0.50, –1.50
Byte 6: Silicon Signature Register
(all bits are read-only)
Bit
7
6
5
4
3
2
1
0
@Pup
0
0
0
0
1
0
0
0
Name
Description
Revision ID Bit 3
Revision ID Bit 2
Revision ID Bit 1
Revision ID Bit 0
Vendor ID Bit 3
Vendor ID Bit 2
Vendor ID Bit 1
Vendor ID Bit 0
Revision ID Bit 3
Revision ID Bit 2
Revision ID Bit 1
Revision ID Bit 0
Vendor ID Bit 3
Vendor ID Bit 2
Vendor ID Bit 1
Vendor ID Bit 0
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CY28409 | Clock Synthesizer with Differential SRC and CPU Outputs |
| CY28409ZCT | Clock Synthesizer with Differential SRC and CPU Outputs |
| CY28409OC | RF/Coaxial Connector; RF Coax Type:BNC; Contact Termination:Clamp; Body Style:Straight Plug; RG Cable Type:59, 62, 71, 140, 210, 302 RoHS Compliant: Yes |
| CY28409OCT | Clock Synthesizer with Differential SRC and CPU Outputs |
| CY28409ZC | RF/Coaxial Connector; RF Coax Type:UHF; Contact Termination:Solder; Body Style:Straight Plug; RG Cable Type:8, 9, 87A, 213, 214, 225; Body Plating:Nickel RoHS Compliant: Yes |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CY28409 | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Clock Synthesizer with Differential SRC and CPU Outputs |
| CY28409_06 | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Clock Synthesizer with Differential SRC and CPU Outputs |
| CY28409AZXC | 功能描述:時(shí)鐘發(fā)生器及支持產(chǎn)品 SysClk Intel Grntsdl 865 and 875 chipsets RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-56 |
| CY28409AZXCT | 功能描述:時(shí)鐘發(fā)生器及支持產(chǎn)品 SysClk Intel Grntsdl 865 and 875 chipsets RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-56 |
| CY28409OC | 功能描述:時(shí)鐘合成器/抖動(dòng)清除器 SysClk Intel Grntsdl 865 and 875 chipsets RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。