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    • 參數(shù)資料
      型號: BU-61583F6-191
      廠商: DATA DEVICE CORP
      元件分類: 微控制器/微處理器
      英文描述: 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CDFP70
      封裝: CERAMIC, DFP-70
      文件頁數(shù): 46/48頁
      文件大?。?/td> 378K
      代理商: BU-61583F6-191
      7
      Data Device Corporation
      www.ddc-web.com
      BU-61582
      G-08/02-250
      ADDRESSING, INTERNAL REGISTERS, AND MEMORY
      MANAGEMENT
      The software interface of the BU-61582 to the host processor
      consists of 17 internal operational registers for normal operation,
      an additional 8 test registers, plus 64K X 16 of shared memory
      address space. The BU-61582’s 16K X 16 of internal RAM
      resides in this address space. Reference TABLE 4.
      Definition of the address mapping and accessibility for the
      SP’ACE’s 17 nontest registers, and the test registers, is as fol-
      lows:
      Interrupt Mask Register:
      Used to enable and disable interrupt requests for various condi-
      tions.
      Configuration Registers #1 and #2:
      Used to select the BU-61582’s mode of operation, and for soft-
      ware control of RT Status Word bits, Active Memory Area, BC
      Stop-on-Error, RT Memory Management mode selection, and
      control of the Time Tag operation.
      Start/Reset Register:
      Used for “command” type functions, such as software reset,
      BC/MT Start, Interrupt Reset, Time Tag Reset, and Time Tag
      Register Test. The Start/Reset Register includes provisions for
      stopping the BC in its auto-repeat mode, either at the end of the
      current message or at the end of the current BC frame.
      BC/RT Command Stack Pointer Register:
      Allows the host CPU to determine the pointer location for the cur-
      rent or most recent message when the BU-61582 is in BC or RT
      modes.
      BC Control Word/RT Subaddress Control Word
      Register:
      In BC mode, allows host access to the current or most recent BC
      Control Word. The BC Control Word contains bits that select the
      active bus and message format, enable off-line self-test, mask-
      ing of Status Word bits, enable retries and interrupts, and speci-
      fy MIL-STD-1553A or -1553B error handling. In RT mode, this
      register allows host access to the current or most recent
      Subaddress Control Word. The Subaddress Control Word is
      used to select the memory management scheme and enable
      interrupts for the current message. The read/write accessibility
      can be used as an aid for testing the SP’ACE hybrid.
      Time Tag Register:
      Maintains the value of a real-time clock. The resolution of this
      register is programmable from among 2, 4, 8, 16, 32, and 64
      s/LSB. The TAG_CLK input signal also may cause an external
      reserved
      1
      1F
      reserved
      0
      1
      18
      Test Mode Register 7
      1
      0
      1
      17
      Test Mode Register 0
      0
      1
      10
      RT BIT Word Register (RD)
      1
      0
      0F
      RT Status Word Register (RD)
      0
      1
      0
      0E
      BC Frame Time/RT Last Command
      /MT Trigger Word Register (RD/WR)
      1
      0
      1
      0
      0D
      BC Time Remaining to Next Message
      Register (RD/WR)
      0
      1
      0
      0C
      BC Frame Time Remaining Register
      (RD/WR)
      1
      0
      1
      0
      0B
      Data Stack Address Register (RD/WR)
      0
      1
      0
      1
      0
      0A
      Configuration Register #5 (RD/WR)
      1
      0
      1
      0
      09
      Configuration Register #4 (RD/WR)
      0
      1
      0
      08
      Configuration Register #3 (RD/WR)
      1
      0
      07
      Interrupt Status Register (RD)
      0
      1
      0
      06
      Time Tag Register (RD/WR)
      1
      0
      1
      0
      05
      BC Control Word/RT Subaddress Control
      Word Register (RD/WR)
      0
      1
      0
      04
      BC/RT Command Stack Pointer Register
      (RD)
      1
      0
      03
      Start/Reset Register (WR)
      1
      0
      03
      Configuration Register #2 (RD/WR)
      0
      1
      0
      02
      Configuration Register #1 (RD/WR)
      1
      0
      01
      Interrupt Mask Register (RD/WR)
      0
      00
      A0
      A1
      A2
      A3
      A4
      HEX
      REGISTER
      DESCRIPTION/ACCESSIBILITY
      ADDRESS LINES
      TABLE 4. ADDRESS MAPPING
      oscillator to clock the Time Tag Register. Start-of-Message
      (SOM) and End-of-Message (EOM) sequences in BC, RT, and
      Message Monitor modes cause a write of the current value of
      the Time Tag Register to the stack area of RAM.
      Interrupt Status Register:
      Mirrors the Interrupt Mask Register and contains a Master
      Interrupt bit. It allows the host processor to determine the cause
      of an interrupt request by means of a single READ operation.
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