參數資料
型號: CY28409
廠商: Cypress Semiconductor Corp.
英文描述: Clock Synthesizer with Differential SRC and CPU Outputs
中文描述: 時鐘合成器與微分SRC以及CPU的輸出
文件頁數: 16/18頁
文件大?。?/td> 330K
代理商: CY28409
CY28409
Document #: 38-07445 Rev. *B
Page 16 of 18
Test and Measurement Set-up
For Differential CPU and SRC Output Signals
The following diagram shows lumped test load configurations
for the differential Host Clock Outputs.
Table 9. Maximum Lumped Capacitive Output Loads
Clock
PCI Clocks
3V66 Clocks
USB Clock
DOT Clock
REF Clock
Max Load
30
30
20
10
30
Unit
pF
pF
pF
pF
pF
CPUT
T
PCB
T
PCB
CPUC
33
33
49.9
49.9
Measurement
Point
2pF
475
IREF
Measurement
Point
2pF
Figure 11. 0.7V Load Configuration
2.0V
0.8V
3.3V
0V
1.5V
3.3V sig n als
tD C
P rob e
O u tpu t unde r Test
Loa d C ap
-
-
Figure 12. Lumped Load For Single-ended Output Signals (for AC Parameters Measurement)
Table 10. CPU Clock Current Select Function
Board Target Trace/Term Z
50 Ohms
Reference R, I
REF
– V
DD
(3*R
REF
)
R
REF
= 475 1%, I
REF
= 2.32 mA
Output Current
I
OH
= 6*I
REF
Voh @ Z
0.7V @ 50
Ordering Information
Part Number
Package Type
Product Flow
Commercial, 0
°
to 70
°
C
Commercial, 0
°
to 70
°
C
Commercial, 0
°
to 70
°
C
Commercial, 0
°
to 70
°
C
CY28409OC
CY28409OCT
CY28409ZC
CY28409ZCT
56-pin SSOP
56-pin SSOP – Tape and Reel
56-pin TSSOP
56-pin TSSOP – Tape and Reel
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PDF描述
CY28409ZCT Clock Synthesizer with Differential SRC and CPU Outputs
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CY28409OCT Clock Synthesizer with Differential SRC and CPU Outputs
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相關代理商/技術參數
參數描述
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:時鐘發(fā)生器及支持產品 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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-56
CY28409AZXCT 功能描述:時鐘發(fā)生器及支持產品 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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-56
CY28409OC 功能描述:時鐘合成器/抖動清除器 SysClk Intel Grntsdl 865 and 875 chipsets RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數量: 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
CY28409OCT 功能描述:時鐘合成器/抖動清除器 SysClk Intel Grntsdl 865 and 875 chipsets RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數量: 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