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    參數(shù)資料
    型號(hào): LAN91C96ITQFP
    廠商: STANDARD MICROSYSTEMS CORP
    元件分類: 微控制器/微處理器
    英文描述: NON-PCI SINGLE-CHIP FULL DUPLES ETHERNET CONTROLLER
    中文描述: 2 CHANNEL(S), 10M bps, LOCAL AREA NETWORK CONTROLLER, PQFP100
    封裝: 1 MM THICKNESS, TQFP-100
    文件頁數(shù): 66/110頁
    文件大?。?/td> 655K
    代理商: LAN91C96ITQFP
    Non-PCI Single-Chip Full Duplex Ethernet Controller
    Rev.
    11/18/2004
    Page 66
    SMSC DS – LAN91C96I
    DATASHEET
    TX Interrupt With AUTO_RELEASE = FALSE
    1. Save the Packet Number Register
    Saved_PNR = Read
    Byte
    (Bank 2, Offset 2)
    2. Read the EPH Status Register
    Temp = Read (Bank 0, Offset 2)
    3. Acknowledge TX Interrupt
    Write
    Byte
    (0x02, (Bank 2, Offset C));
    4. Check for Status of Transmission
    If ( Temp AND 0x0001)
    {
    //If Successful Transmission
    Step 4.1.1: Issue MMU Release (Release Specific Packet)
    Write (0x00A0, (Bank2, Offset 0));
    Step 4.1.2: Return from the routine
    }
    else
    {
    //Transmission has FAILED
    // Now we can either release or re-enqueue the packet
    Step 4.2.1: Get the packet to release/re-enqueue, stored in FIFO
    Temp = Read (Bank 2, Offset 4)
    Temp = Temp & 0x003F
    Step 4.2.2: Write to the PNR
    Write (Temp, (Bank2, Offset 2))
    Step 4.2.3
    // Option 1: Release the packet
    Write (0x00A0, (Bank2, Offset 0));
    //Option 2: Re-Enqueue the packet
    Write (0x00C0, (Bank2, Offset 0));
    Step 4.2.4: Re-Enable Transmission
    Temp = Read(Bank0, Offset 0);
    Temp = Temp2
    OR
    0x0001
    Write (Temp2, (Bank 0, Offset 0));
    Step 4.2.5: Return from the routine
    }
    5. Restore the Packet Number Register
    Write
    Byte
    (Saved_PNR, (Bank 2, Offset 2))
    Figure 8.3 – TX INTR
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