參數(shù)資料
型號(hào)： SY58621L
廠商： Micrel Semiconductor,Inc.
英文描述： Precision 3.2Gbps CML/LVPECL Backplane Transceiver with Integrated Loopback
中文描述： 精密達(dá)3.2Gbps CML / LVPECL信號(hào)背板收發(fā)器集成環(huán)回
文件頁(yè)數(shù)： 13/19頁(yè)
文件大?。?/td> 308K
代理商： SY58621L
Micrel, Inc.
SY58621L
January 2006
13
M9999-012006-B
hbwhelp@micrel.com
or (408) 955-1690
PRBS Discussion
LOS Testing
The LOS function is tested with a 2
7
-1 PRBS (Pseudo
Random Bit Stream) data-pattern. A PRBS data-
pattern of 2
-1 is used because it is a good
approximation to an 8b10b-encoded NRZ data
stream. 8b10b encodes 8 bits of data and replaces it
with 10 bits of symbol. The extra bits are added to
improve transition density and the BER (Bit Error
Rate) of the system.
Deterministic Jitter Testing and the K28.5 Pattern
The K28.5 (11000001010011111010) and 2
23
-1 PRBS
data-patterns are used to characterize DJ because
both data patterns have lower spectral frequency
content which provides a best approximation to
scrambled NRZ data streams.
Random Jitter Testing and the K28.7 Pattern
The K28.7 (1111100000…) data pattern is used to
measure RJ since the pattern is free of DJ. In
addition, because the K28.7 data-pattern can be used
to compare the T
N
(N
TH
period) to the T
0
(1
st
period),
low frequency jitter components can be accumulated.
Power Supply Filtering
Although the SY58621L is fully differential, it is
recommended that the power supplies are filtered as
shown in Figure 4.
Figure 4. Power Supply Filtering Scheme
Item
C1, C2, C3, C23
Description
0.1
μ
F Capacitor
C4, C5, C6, C22
0.01
μ
F Capacitor
L1, L2, L3
1.2
μ
H Ferrite Bead Inductor
Table 1. Bill of Materials
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SY58621LMG Precision 3.2Gbps CML/LVPECL Backplane Transceiver with Integrated Loopback
SY58621LMGTR Precision 3.2Gbps CML/LVPECL Backplane Transceiver with Integrated Loopback
SY58626L DC-to-6.4Gbps Backplane Transmit Buffer with Selectable Output Pre-emphasis, I/O DCOffset Control, and 200mV-3.0VPP Output Swing
SY58626LMH DC-to-6.4Gbps Backplane Transmit Buffer with Selectable Output Pre-emphasis, I/O DCOffset Control, and 200mV-3.0VPP Output Swing
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SY58621L_10 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Precision 3.2Gbps CML/LVPECL Backplane
SY58621LMG 功能描述:總線收發(fā)器 4.25Gbps Transceiver w/ CML/LVPECL Outputs (I Temp, Green) RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時(shí)間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel
SY58621LMG TR 功能描述:總線收發(fā)器 4.25Gbps Transceiver w/ CML/LVPECL Outputs (I Temp, Green) RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時(shí)間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel
SY58621LMGTR 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Precision 3.2Gbps CML/LVPECL Backplane Transceiver with Integrated Loopback
SY58626L 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:DC-to-6.4Gbps Backplane Transmit Buffer with
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