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    • 參數(shù)資料
      型號: 78Q8430-100IGTR/F
      廠商: Maxim Integrated Products
      文件頁數(shù): 53/88頁
      文件大?。?/td> 0K
      描述: IC LAN MEDIA ACCESS CTLR 100LQFP
      產(chǎn)品培訓模塊: Lead (SnPb) Finish for COTS
      Obsolescence Mitigation Program
      標準包裝: 1,000
      控制器類型: 以太網(wǎng)控制器,MAC/PHY
      電源電壓: 3.3V
      電流 - 電源: 230mA
      工作溫度: -40°C ~ 85°C
      安裝類型: 表面貼裝
      封裝/外殼: 100-LQFP
      供應(yīng)商設(shè)備封裝: 100-LQFP(14x14)
      包裝: 帶卷 (TR)
      DS_8430_001
      78Q8430 Data Sheet
      Rev. 1.2
      57
      7.5.3
      Setup Transmit Data Register
      Name: STDR
      Reset Val: 0x0000_0000
      Block: QUE
      Address: 0x008
      Bits
      Type
      Default
      Description
      31:25
      X
      Reserved
      24
      RW
      Endian
      The network transmit byte order.
      Set = big endian (Most significant byte transmit first)
      Clear = little endian (Least significant byte transmit first)
      23:20
      X
      Reserved
      19:18
      RW
      00
      Start Offset
      The number of bytes to ignore on the first data word written for this
      buffer. This byte mask is applied any time the Count value is
      non-zero. After each time it is applied, however, it is reset to zero such
      that it is really only applied on the first write.
      17:16
      RW
      00
      End Offset
      The number of bytes to ignore on the last data word written for this
      buffer. This byte mask is applied any time the Count value is zero.
      Unlike the Start Offset, the End Offset is not self clearing. This means
      that the End Offset will be applied to all writes to the QUE once the
      Count value reaches zero, unless the host clears the End Offset. The
      remainder of PSZR will override the End Offset when a write occurs
      and the PSZR value is less than four.
      15:14
      X
      Reserved
      13:0
      RW
      0000
      Count
      The total number of writes needed to complete the buffer minus one.
      This counter decrements on each write operation to the QUE. This
      counter decrements on each write operation to the QUE until it reaches
      zero. The Count value will remain zero until the next host write. The
      value written here must be one less than the number of writes in the
      buffer so that the Count value will equal zero on the last write and
      cause the End Offset to be applied.
      Note: The PCWR and PSZR must be set before writing to the STDR.
      7.5.4
      Transmit Data Register
      Name: TDR
      Reset Val: 0x0000_0000
      Block: QUE
      Address: 0x00C
      Bits
      Type
      Default
      Description
      31:0
      WO
      N/A
      Packet Data to Add to the QUE
      Data written to this register is added to the QUE to which the register
      belongs.
      7.5.5
      Receive Data Register
      Name: RDR
      Reset Val: 0x0000_0000
      Block: QUE
      Address: 0x010
      Bits
      Type
      Default
      Description
      1:0
      RO
      N/A
      Packet Data Read from the QUE
      Data read from this register is shifted out of the QUE to which the
      register belongs. The RPSR should be consulted to make sure data is
      available before reading this register.
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