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參數(shù)資料
| 型號： | KSZ8051MLL |
| 廠商： | Micrel Inc |
| 文件頁數(shù)： | 7/48頁 |
| 文件大?。?/td> | 0K |
| 描述： | TXRX PHY 10/T100 3.3V MII 48LQFP |
| 特色產(chǎn)品： | KSZ8051MLL Physical Layer Transceiver KSZ8051/8031/8021 Series |
| 標(biāo)準(zhǔn)包裝： | 250 |
| 類型： | PHY 收發(fā)器 |
| 驅(qū)動器/接收器數(shù)： | 1/1 |
| 規(guī)程： | MII |
| 電源電壓： | 1.8V，2.5V，3.3V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 48-LQFP |
| 供應(yīng)商設(shè)備封裝： | 48-LQFP（7x7） |
| 包裝： | 托盤 |
| 配用： | 576-3864-ND - BOARD EVALUATION FOR KSZ8051MLL |
| 其它名稱： | 576-3731 |
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Micrel, Inc.
KSZ8051MLL
July 2010
15
M9999-071210-1.0
Scrambler/De-Scrambler (100Base-TX Only)
The scrambler is used to spread the power spectrum of the transmitted signal to reduce EMI and baseline wander, and
the de-scrambler is needed to recover the scrambled signal.
SQE and Jabber Function (10Base-T Only)
In 10Base-T operation, a short pulse is put out on the COL pin after each frame is transmitted. This SQE Test is required
as a test of the 10Base-T transmit/receive path. If transmit enable (TXEN) is high for more than 20 ms (jabbering), the
10Base-T transmitter is disabled and COL is asserted high. If TXEN is then driven low for more than 250 ms, the 10Base-
T transmitter is re-enabled and COL is de-asserted (returns to low).
PLL Clock Synthesizer
The KSZ8051MLL generates all internal clocks and all external clocks for system timing from an external 25MHz crystal,
oscillator, or reference clock.
Auto-Negotiation
The KSZ8051MLL conforms to the auto-negotiation protocol, defined in Clause 28 of the IEEE 802.3 Specification.
Auto-negotiation allows UTP (Unshielded Twisted Pair) link partners to select the highest common mode of operation.
During auto-negotiation, link partners advertise capabilities across the UTP link to each other, and then compare their own
capabilities with those they received from their link partners. The highest speed and duplex setting that is common to the
two link partners is selected as the mode of operation.
The following list shows the speed and duplex operation mode from highest to lowest priority.
Priority 1: 100Base-TX, full-duplex
Priority 2: 100Base-TX, half-duplex
Priority 3: 10Base-T, full-duplex
Priority 4: 10Base-T, half-duplex
If auto-negotiation is not supported or the KSZ8051MLL link partner is forced to bypass auto-negotiation, then the
KSZ8051MLL sets its operating mode by observing the signal at its receiver. This is known as parallel detection, and
allows the KSZ8051MLL to establish link by listening for a fixed signal protocol in the absence of auto-negotiation
advertisement protocol.
Auto-negotiation is enabled by either hardware pin strapping (NWAYEN, pin 42) or software (register 0h, bit 12).
By default, auto-negotiation is enabled after power-up or hardware reset. Afterwards, auto-negotiation can be enabled or
disabled by register 0h, bit 12. If auto-negotiation is disabled, the speed is set by register 0h, bit 13, and the duplex is set
by register 0h, bit 8.
The auto-negotiation link up process is shown in Figure 1.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| KSZ8051MLL TR | 功能描述:以太網(wǎng) IC 3.3V, 10Base-T/100Base-TX Physical Layer Transceiver w/ MII Support (48-LQFP) RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
| KSZ8051MLL-EVAL | 功能描述:以太網(wǎng)開發(fā)工具 3.3V, 10Base-T/100Base-TX Physical Layer Transceiver w/ MII Support (48-LQFP) - Evaluation Board 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: |
| KSZ8051MLLI | 功能描述:以太網(wǎng) IC 3.3V, 10Base-T/100Base-TX Physical Layer Transceiver w/ MII Support (48-LQFP, Industrial Grade) RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
| KSZ8051MLLI TR | 功能描述:以太網(wǎng) IC 3.3V, 10Base-T/100Base-TX Physical Layer Transceiver w/ MII Support (48-LQFP, Industrial Grade) RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
| KSZ8051MLLI-TR | 功能描述:1/1 Transceiver Full MII 48-LQFP (7x7) 制造商:microchip technology 系列:- 包裝:剪切帶（CT） 零件狀態(tài):過期 類型:收發(fā)器 協(xié)議:MII 驅(qū)動器/接收器數(shù):1/1 雙工:全 接收器滯后:- 數(shù)據(jù)速率:- 電壓 - 電源:1.8V，2.5V，3.3V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-LQFP 供應(yīng)商器件封裝:48-LQFP（7x7） 標(biāo)準(zhǔn)包裝:1 |
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