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參數(shù)資料
| 型號： | BU-61843F4-300L |
| 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, CQFP72 |
| 封裝： | 25.40 X 25.40 MM, 3.94 MM HEIGHT, CERAMIC, FP-72 |
| 文件頁數(shù)： | 7/60頁 |
| 文件大?。?/td> | 457K |
| 代理商： | BU-61843F4-300L |
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Data Device Corporation
www.ddc-web.com
BU-6174X/6184X/6186X
F-10/02-300
BC Time Remaining to Next Message Register: Provides a
read-only indication of the time remaining before the start of the
next message in a BC frame. In the enhanced BC mode, this
timer may also be used for the BC message sequence control
processor's Delay (DLY) instruction, or for minor or major frame
control. The resolution of this register is 1 s/LSB.
BC Frame Time/ RT Last Command /MT Trigger Word Register:
In BC mode, this register is used to program the BC frame time,
for use in the frame auto-repeat mode. The resolution of this reg-
ister is 100 s/LS, with a range up to 6.55 seconds. In RT mode,
this register stores the current (or most previous) 1553
Command Word processed by the Enhanced Mini-ACE RT. In
the Word Monitor mode, this register is used to specify a 16-bit
Trigger (Command) Word. The Trigger Word may be used to start
or stop the monitor, or to generate interrupts.
BC Initial Instruction List Pointer Register: Enables the host
to assign the starting address for the enhanced BC Instruction
List.
RT Status Word Register and BIT Word Registers: Provide
read-only indications of the RT Status and BIT Words.
Configuration Registers #6 and #7: Used to enable the
Enhanced Mini-ACE/-ACE features that extend beyond the
architecture of the ACE/Mini-ACE (Plus). These include the
Enhanced BC mode; RT Global Circular Buffer (including buffer
size); the RT/MT Interrupt Status Queue, including valid/invalid
message filtering; enabling a software-assigned RT address;
clock frequency selection; a base address for the "non-data" por-
tion of Enhanced Mini-ACE/-ACE memory; LSB filtering for the
Synchronize (with data) time tag operations; and enabling a
watchdog timer for the Enhanced BC message sequence control
engine.
BC Condition Code Register: Used to enable the host proces-
sor to read the current value of the Enhanced BC Message
Sequence Control Engine's condition flags.
BC General Purpose Flag Register: Allows the host processor
to be able to set, clear, or toggle any of the Enhanced BC
Message Sequence Control Engine's General Purpose condition
flags.
BIT Test Status Register: Used to provide read-only access to
the status of the protocol and RAM built-in self-tests (BIT).
BC General Purpose Queue Pointer: Provides a means for ini-
tializing the pointer for the General Purpose Queue, for the
Enhanced BC mode. In addition, this register enables the host to
determine the current location of the General Purpose Queue
pointer, which is incremented internally by the Enhanced BC
message sequence control engine.
RT/MT Interrupt Status Queue Pointer: Provides a means for
initializing the pointer for the Interrupt Status Queue, for RT, MT,
and RT/MT modes. In addition, this register enables the host to
determine the current location of the Interrupt Status Queue
pointer, which is incremented by the RT/MT message processor.
BC Control Word. The BC Control Word contains bits that select
the active bus and message format, enable off-line self-test,
masking of Status Word bits, enable retries and interrupts, and
specify 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.
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 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 the RAM.
Interrupt Status Registers #1 and #2: Allow the host processor
to determine the cause of an interrupt request by means of one
or two read accesses. The interrupt events of the two Interrupt
Status Registers are mapped to correspond to the respective bit
positions in the two Interrupt Mask Registers. Interrupt Status
Register #2 contains an INTERRUPT CHAIN bit, used to indi-
cate an interrupt event from Interrupt Status Register #1.
Configuration Registers #3, #4, and #5: Used to enable many
of the Enhanced Mini-ACE's/-ACE’s advanced features that
were implemented by the prior generation products, the ACE and
Mini-ACE (Plus). For BC, RT, and MT modes, use of the
Enhanced Mode enables the various read-only bits in
Configuration Register #1. For BC mode, Enhanced Mode fea-
tures include the expanded BC Control Word and BC Block
Status Word, additional Stop-On-Error and Stop-On-Status Set
functions, frame auto-repeat, programmable intermessage gap
times, automatic retries, expanded Status Word Masking, and
the capability to generate interrupts following the completion of
any selected message. For RT mode, the Enhanced Mode fea-
tures include the expanded RT Block Status Word, combined
RT/Selective Message Monitor mode, automatic setting of the
TERMINAL FLAG Status Word bit following a loop test failure;
the double buffering scheme for individual receive (broadcast)
subaddresses, and the alternate (fully software programmable)
RT Status Word. For MT mode, use of the Enhanced Mode
enables the Selective Message Monitor, the combined
RT/Selective Monitor modes, and the monitor triggering capabil-
ity.
RT/Monitor Data Stack Address Register: Provides a
read/writable indication of the last data word stored for RT or
Monitor modes.
BC Frame Time Remaining Register: Provides a read-only
indication of the time remaining in the current BC frame. In the
enhanced BC mode, this timer may be used for minor or major
frame control, or as a watchdog timer for the BC message
sequence control processor. The resolution of this register is
100 s/LSB.
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| BU-61843G3-102K | 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CQFP72 |
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| BU-61843G3-100 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
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| BU-61843G4-110 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
| BU-61845 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MIL-STD-1553 Components |Enhanced Mini-ACE? |
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