- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄358741 > LAN8187_06 (SMSC Corporation) 【15kV ESD Protected MII/RMII Fast-Ethernet PHY with HP Auto-MDIX and SMSC flexPWRTM PDF資料下載
參數(shù)資料
| 型號： | LAN8187_06 |
| 廠商： | SMSC Corporation |
| 英文描述： | 【15kV ESD Protected MII/RMII Fast-Ethernet PHY with HP Auto-MDIX and SMSC flexPWRTM |
| 中文描述： | 【15kV的ESD保護信息產(chǎn)業(yè)部/ RMII快速以太網(wǎng)PHY與HP Auto - MDIX功能和SMSC flexPWRTM |
| 文件頁數(shù)： | 24/72頁 |
| 文件大?。?/td> | 433K |
| 代理商： | LAN8187_06 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁當前第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁
±15kV ESD Protected MII/RMII Fast-Ethernet PHY with HP Auto-MDIX and SMSC flexPWR
TM
Datasheet
SMSC LAN8187/LAN8187I
24
Revision 1.0 (12-14-06)
DATASHEET
4.4.2
Manchester Encoding
The 4-bit wide data is sent to the TX10M block. The nibbles are converted to a 10Mbps serial NRZI
data stream. The 10M PLL locks onto the external clock or internal oscillator and produces a 20MHz
clock. This is used to Manchester encode the NRZ data stream. When no data is being transmitted
(TX_EN is low), the TX10M block outputs Normal Link Pulses (NLPs) to maintain communications with
the remote link partner.
4.4.3
10M Transmit Drivers
The Manchester encoded data is sent to the analog transmitter where it is shaped and filtered before
being driven out as a differential signal across the TXP and TXN outputs.
4.5
10Base-T Receive
The 10Base-T receiver gets the Manchester- encoded analog signal from the cable via the magnetics.
It recovers the receive clock from the signal and uses this clock to recover the NRZI data stream. This
10M serial data is converted to 4-bit data nibbles which are passed to the controller across the MII at
a rate of 2.5MHz.
This 10M receiver uses the following blocks:
Filter and SQUELCH (analog)
10M PLL (analog)
RX 10M (digital)
MII (digital)
4.5.1
10M Receive Input and Squelch
The Manchester signal from the cable is fed into the PHY (on inputs RXP and RXN) via 1:1 ratio
magnetics. It is first filtered to reduce any out-of-band noise. It then passes through a SQUELCH
circuit. The SQUELCH is a set of amplitude and timing comparators that normally reject differential
voltage levels below 300mV and detect and recognize differential voltages above 585mV.
4.5.2
Manchester Decoding
The output of the SQUELCH goes to the RX10M block where it is validated as Manchester encoded
data. The polarity of the signal is also checked. If the polarity is reversed (local RXP is connected to
RXN of the remote partner and vice versa), then this is identified and corrected. The reversed condition
is indicated by the flag “XPOL“, bit 4 in register 27. The 10M PLL is locked onto the received
Manchester signal and from this, generates the received 20MHz clock. Using this clock, the
Manchester encoded data is extracted and converted to a 10MHz NRZI data stream. It is then
converted from serial to 4-bit wide parallel data.
The RX10M block also detects valid 10Base-T IDLE signals - Normal Link Pulses (NLPs) - to maintain
the link.
4.5.3
10M Receive Data Across the MII/RMII Interface
For MII, the 4 bit data nibbles are sent to the MII block. In MII mode, these data nibbles are valid on
the rising edge of the 2.5 MHz RX_CLK.
For RMII, the 2bit data nibbles are sent to the RMII block. In RMII mode, these data nibbles are valid
on the rising edge of the RMII REF_CLK.
相關PDF資料 |
PDF描述 |
|---|---|
| LAN8187 | High-Performance MII and RMII 10/100 Ethernet PHY with HP Auto-MDIX |
| LAN83C175 | Ethernet CARDBUS Integrated Controller With Modem Support |
| LAN83C180 | 10/100 FAST ETHERNET PHY TRANSCEIVER |
| LAN83C185 | HIGH PERFORMANCE SINGLE CHIP LOW POWER 10/100 ETHERNET PHYSICAL LAYER TRANSCEIVER |
| LAN83C183-JD | FAST ETHERNET PHYSICAL LAYER DEVICE |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LAN8187I | 制造商:SMSC 制造商全稱:SMSC 功能描述:High-Performance MII and RMII 10/100 Ethernet PHY with HP Auto-MDIX |
| LAN8187I-JT | 功能描述:以太網(wǎng) IC HiPerfrm Ethrnt PHY 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 |
| LAN8187-JT | 功能描述:以太網(wǎng) IC HiPerfrm Ethrnt PHY 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 |
| LAN83C171 | 制造商:SMSC 制造商全稱:SMSC 功能描述:EPIC/XF ACPI/PC 97 Compliant Integrated PCI 10/100 Mbps Fast Ethernet Controller |
| LAN83C171 WAF | 制造商:SMSC 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復。