參數(shù)資料
型號(hào): KSZ8851SNL-BBE-EVAL
廠商: Micrel Inc
文件頁(yè)數(shù): 75/80頁(yè)
文件大?。?/td> 0K
描述: BOARD EVAL MAC/PHY FOR KSZ8851
軟件下載: KSZ8851SNL Linux Driver
Linus' GIT Repo
View Driver
設(shè)計(jì)資源: Zippy2 Schematic
BeagleBoard Zippy2
KSZ8851SNL-BBE-EVAL Bill of Materials
特色產(chǎn)品: Zippy 2
標(biāo)準(zhǔn)包裝: 1
系列: LinkMD®
主要目的: 接口,以太網(wǎng)控制器(PHY 和 MAC)
嵌入式:
已用 IC / 零件: KSZ8851SNL
主要屬性: 1 個(gè)端口,100BASE-TX/10BASE-T
次要屬性: SPI 接口,LinkMD 線纜診斷
已供物品: 板,硬件
產(chǎn)品目錄頁(yè)面: 1114 (CN2011-ZH PDF)
其它名稱(chēng): 576-3602
KSZ8851SNL-BBE-EVL
ZIPPY2
Micrel, Inc.
KSZ8851SNL/SNLI
August 2009
77
M9999-083109-2.0
Selection of Isolation Transformers
A 1:1 isolation transformer is required at the line interface. An isolation transformer with integrated common-mode choke
is recommended for exceeding FCC requirements.
Table 20 gives recommended transformer characteristics.
Parameter
Value
Test Condition
Turns ratio
1 CT : 1 CT
Open-circuit inductance (min)
350
μH
100mV, 100kHz, 8mA
Leakage inductance (max)
0.4
μH
1MHz (min)
Inter-winding capacitance (max)
12pF
D.C. resistance (max)
0.9
Ω
Insertion loss (max)
1.0dB
0MHz – 65MHz
HIPOT (min)
1500Vrms
Table 20. Transformer Selection Criteria
Magnetic Manufacturer
Part Number
Auto MDI-X
Number of Port
Pulse
H1102
Yes
1
Pulse (low cost)
H1260
Yes
1
Transpower
HB726
Yes
1
Bel Fuse
S558-5999-U7
Yes
1
Delta
LF8505
Yes
1
LanKom
LF-H41S
Yes
1
TDK (Mag Jack)
TLA-6T718
Yes
1
Table 21. Qualified Single Port Magnetics
Selection of Reference Crystal
Chacteristics
Value
Units
Frequency
25
MHz
Frequency tolerance (max)
±50
ppm
Load capacitance (max)
20
pF
Series resistance
40
Ω
Table 22. Typical Reference Crystal Characteristics
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