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參數(shù)資料
| 型號： | AX88772 |
| 廠商： | ASIX Electronics Corporation |
| 英文描述： | USB to 10/100 Fast Ethernet/HomePNA Controller |
| 中文描述： | USB至10/100快速以太網(wǎng)/電話線網(wǎng)絡(luò)控制器 |
| 文件頁數(shù)： | 10/42頁 |
| 文件大小： | 393K |
| 代理商： | AX88772 |
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AX88772
USB to 10/100 Fast Ethernet/HomePNA Controller
3.0 Function Description
3.1 USB Core and Interface
The USB core and interface contains an USB 2.0 transceiver, serial interface engine (SIE), USB bus protocol
handshaking block, USB standard command, vendor command registers, logic for supporting bulk transfer, and interrupt
transfer, etc. The USB interface is used to communicate with USB host controller and is compliant with USB
specification V1.0, V1.1 and V2.0.
3.2 10/100 Ethernet PHY
The 10/100 Fast Ethernet PHY is compliant with IEEE 802.3 and IEEE 802.3u standards. It contains an on-chip crystal
oscillator, PLL-based clock multiplier, digital phase-locked loop for data/timing recovery. It provides over-sampling
mixed-signal transmit drivers complying with 10/100BASE-TX transmit wave shaping / slew rate control requirements.
It has robust mixed-signal loop adaptive equalizer for receiving signal recovery. It contains baseline wander corrective
block to compensate data dependent offset due to AC coupling transformers. It supports auto-negotiation and has
multi-function LED outputs.
3.3 MAC Core
The MAC core supports 802.3 and 802.3u MAC sub-layer functions, such as basic MAC frame receive and transmit,
CRC checking and generation, filtering, forwarding, flow-control in full-duplex mode, and collision-detection and
handling in half-duplex mode, etc. It provides a media-independent interface (MII) for implementing Fast Ethernet and
HomePNA functions.
The MAC core interfaces to both external MII interface I/O pins and MII interface of the embedded 10/100 Ethernet
PHY. The selection between the two MII interfaces is done via USB vendor command, Software PHY Select register.
Figure 3 shows the datapath diagram of 10/100 Ethernet PHY and MII interface to MAC core.
10/100
Ethernet PHY
RX
MII Interface I/O:
RX_CLK, RXD [3:0], RX_DV,
RX_ER, COL, CRS
TX_CLK, TXD [3:0], TX_EN, TX_ER
RXIP/RXIN
TXOP/TXON
TX
MAC
Core
Figure 3: Internal Datapath Diagram of 10/100 Ethernet PHY and MII Interface
3.4 Station Management (STA)
The station management interface provides a simple, two-wire, serial interface to connect to a managed PHY device for
the purposes of controlling the PHY and gathering status from the PHY. The station management interface allows
ASIX ELECTRONICS CORPORATION
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AX88772_07 | 制造商:ASIX 制造商全稱:ASIX 功能描述:USB to 10/100 Fast Ethernet/HomePNA Controller |
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| AX88772ALF | 制造商:ASIX Electronics Corporation 功能描述: |
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| AX88772BLF | 制造商:ASIX Electronics Corporation 功能描述: |
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