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參數(shù)資料
| 型號： | CDB8952 |
| 廠商： | Cirrus Logic, Inc. |
| 英文描述： | CrystalLAN 100BASE-X and 10BASE-T Transceiver |
| 中文描述： | CrystalLAN個(gè)100Base - X和10Base - T的收發(fā)器 |
| 文件頁數(shù)： | 67/82頁 |
| 文件大?。?/td> | 1130K |
| 代理商： | CDB8952 |
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CS8952
CrystalLAN
100BASE-X and 10BASE-T Transceiver
67
ly) on both sides of the TX+/- traces.
No signal current carrying planes, i.e. no
ground or power plane, should be present un-
derneath the region between the transformer
secondary (network) side and the RJ-45. How-
ever, a chassis plane may be added in this re-
gion to pick up the metal tabs of a shielded RJ-
45. This chassis plane should be separated from
the ground and power planes by at least
50 mils. That is, all other ground and power
planes should be “cookie cuttered” so they are
voided in the area of the chassis plane. Gener-
ally speaking, parts should not cross the moat
except for the transformer.
Proper termination practices must be used with
all transmission lines, especially if sending and
receiving high speed signals on and off the
board. Series terminationsmustbekeptcloseto
the source and load terminations close to the
load. Thus the TX_NRZ+/- termination com-
ponents must be kept close to the fiber optic
transceiver, and the RX_NRZ+/- and SIG-
NAL+/- termination components must be kept
close to the CS8952.
Locate the crystal as close to the CS8952 as
possible, runningshorttracesonthecomponent
side in order to reduce parasitic load capaci-
tance.
Add bulk capacitance at each connector where
powermaybesupplied.Forexample,MIIpow-
er may be provided at the MII connector and at
aseparateconnectorfortestpurposes.Ifso,and
the two connectors are not adjacent, then the
bulk capacitors should be duplicated in each lo-
cations.
Usewidetracestoconnectthe“BobSmith”ter-
mination resistors at T1 and the RJ-45 to the
2 KV capacitor or capacitors in order to mini-
mize their lead inductance.
CS8952 Pin
Assignment
T1 Primary Pin
Assignment
T1 Secondary
Pin Assignment
RJ-45 Pin Assignment
Adapter/NIC
Configuration
3 (RD+)
6 (RD-)
2 (TD+)
1 (TD+)
Hub/Repeater
Configuration
1 (RD+)
2 (RD-)
6 (TD-)
3 (TD+)
91 (RX+)
92 (RX-)
81 (TX-)
80 (TX+)
1 (RX+)
2 (RX-)
16 (TX-)
15 (TX+)
7 (RX+)
6 (RX-)
10 (TX-)
11 (TX+)
Table 8. RJ-45 Wiring
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CDB8952T | 功能描述:以太網(wǎng)開發(fā)工具 Eval Bd 100BASE-TX/ 10BASE-T Transceiver RoHS:否 制造商:Micrel 產(chǎn)品:Evaluation Boards 類型:Ethernet Transceivers 工具用于評估:KSZ8873RLL 接口類型:RMII 工作電源電壓: |
| CDB-9PF | 制造商:HRS 制造商全稱:HRS 功能描述:CD CRIMP TYPE CONNECTOR |
| CDB-9SF | 制造商:HRS 制造商全稱:HRS 功能描述:CD CRIMP TYPE CONNECTOR |
| CDBA1100 | 制造商:COMCHIP 制造商全稱:Comchip Technology 功能描述:SMD Schottky Barrier Rectifier |
| CDBA1100-G | 功能描述:肖特基二極管與整流器 SCHOTTKY DIODE 1A, 100V RoHS:否 制造商:Skyworks Solutions, Inc. 產(chǎn)品:Schottky Diodes 峰值反向電壓:2 V 正向連續(xù)電流:50 mA 最大浪涌電流: 配置:Crossover Quad 恢復(fù)時(shí)間: 正向電壓下降:370 mV 最大反向漏泄電流: 最大功率耗散:75 mW 工作溫度范圍:- 65 C to + 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-143 封裝:Reel |
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