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SM843256KA 数据表(PDF) 3 Page - Micrel Semiconductor

部件名 SM843256KA
功能描述  10 Gigabit Ethernet and SONET, 6 output, Ultra-Low Jitter LVPECL Frequency Synthesizer
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制造商  MICREL [Micrel Semiconductor]
网页  http://www.micrel.com
标志 MICREL - Micrel Semiconductor

SM843256KA 数据表(HTML) 3 Page - Micrel Semiconductor

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Micrel, Inc.
SM843256
July 2010
3
M9999-072110-B
Pin Description
Pin Number
Pin Name
Pin Type
Pin Level
Pin Function
1, 2
VDDO
PWR
2.5V or 3.3V Power Supply
3, 4
/Q2, Q2
O, (DIF)
LVPECL
Differential Clock Output
5, 6
/Q1, Q1
O, (DIF)
LVPECL
Differential Clock Output
7, 8
/Q0, Q0
O, (DIF)
LVPECL
Differential Clock Output
9
PLL_BYPASS
I, (SE)
LVCMOS
Pull-Up 45k, Single-Ended Input Select Pin.
Logic (0) = PLL Output
Logic (1) = Xtal Reference
10
VDDA
PWR
Analog 3.3V or 2.5V Power Supply
11
VDD
PWR
3.3V or 2.5V Power Supply
12
FB_SEL
I, (SE)
LVCMOS
Pull-Down 45k, Single-Ended Input Select Pin
13
XTAL_IN
I, (SE)
12pF crystal
Crystal Reference Input, no load caps needed.
14
XTAL_OUT
O, (SE)
12pF crystal
Crystal Reference Output, no load caps needed.
15
N_SEL0
I, (SE)
LVCMOS
Pull-Up 45k, Single-Ended Input Select Pin
16, 17
GND
PWR
Ground
18
N_SEL1
I, (SE)
LVCMOS
Pull-Up 45k, Single-Ended Input Select Pin
19, 20
/Q5, Q5
O, (DIF)
LVPECL
Differential Clock Output
21, 22
/Q4, Q4
O, (DIF)
LVPECL
Differential Clock Output
23, 24
/Q3, Q3
O, (DIF)
LVPECL
Differential Clock Output
Input and Output Frequency Table
XTAL (MHz)
FB_SEL
N_SEL1
N_SEL0
Outputs (MHz)
Application
24
0
0
0
600
-
24
0
0
1
300
-
24
0
1
0
150
SAS/SATA
24
0
1
1
120
-
25
0
0
0
625
10 Gigabit Ethernet
25
0
0
1
312.50
10 Gigabit Ethernet
25
0
1
0
156.25
10 Gigabit Ethernet
25
0
1
1
125
Gigabit Ethernet/Infiniband/PCI/PCI-E/PCI-X
18.75
1
0
0
600
-
18.75
1
0
1
300
-
18.75
1
1
0
150
SAS/SATA
18.75
1
1
1
75
SAS/SATA
19.44
1
0
0
622.08
10 Gigabit Ethernet/SONET
19.44
1
0
1
311.04
SONET
19.44
1
1
0
155.52
SONET
19.44
1
1
1
77.76
SONET
19.53125
1
0
0
625
10 Gigabit Ethernet
19.53125
1
0
1
312.5
10 Gigabit Ethernet
19.53125
1
1
0
156.25
10 Gigabit Ethernet
19.53125
1
1
1
78.125
10 Gigabit Ethernet


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