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| 型号： | MA28151 |
| 厂商： | Dynex Semiconductor Ltd. |
| 英文描述： | Radiation hard Programmable Communication Interface |
| 中文描述： | 辐射硬可编程通信接口 |
| 文件页数： | 9/22页 |
| 文件大小： | 186K |
| 代理商： | MA28151 |
MA28151
9/22
3.10 COMMAND INSTRUCTION DEFINITION
Once the functional definition of the MA28151 has been
programmed by the Mode Instruction and the sync characters
are loaded (if in Sync Mode) then the device is ready to be
used for data communications. The Command Instruction
controls the actual operation of the selected format. Functions
such as: Enable Transmit/Receive, Error Reset and Modem
Controls are provided by the Command Instruction.
Once the Mode Instruction has been written into the
MA28151 and Sync characters inserted, if necessary, then all
further “control writes” (CDN=1) will load a Command
Instruction. A Reset Operation (internal or external) will return
the MA28151 to the Mode instruction format.
Note: Internal Reset on Power-up. When power is first
applied, the MA28151 may come up in the Mode, Sync
character or Command format. To guarantee that the device is
in the Command instruction format before the Reset command
is issued, it is safest to execute the worst-case initialization
sequence (sync mode with two sync characters). Loading
three 00
H
s consecutively into the device with CDN=1
configures sync operation and writes two dummy 00
H
sync
characters. An internal reset command (40
H
) may then be
issued to return the device to the idle state.
3.11 COMMAND INSTRUCTION FORMAT
D
7
TRANSMIT ENABLE
1 = ENABLE
0 = DISABLE
EH
D
6
IR
D
5
RTS
D
4
ER
D
3
SBRK
D
2
RxE
D
1
DTR
D
0
TxEN
DATA TERMINAL READY
HIGH WILL FORCE DTR
OUTPUT TO ZERO
RECEIVE ENABLE
1 = ENABLE
0 = DISABLE
SEND BREAK CHARACTER
1 = FORCES TxD LOW
0 = NORMAL OPERATION
ERROR RESET
1 = RESET ERROR FLAGS
PE, OE, FE
REQUEST TO SEND
HIGH WILL FORCE RTS
OUTPUT TO ZERO
INTERNAL RESET
HIGH RETURNS THE MA28151 TO
MODE INSTRUCTION FORMAT
ENTER HUNT MODE*
HIGH ENABLES SEARCH FOR SYNC
CHARACTERS (HAS NO EFFECT IN ASYNC MODE)
*NOTE: ERROR RESET must be performed whenever RxENABLE and ENTER-HUNT
are programmed.
Figure 12: Command Instruction Format
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MA28151GBB | 功能描述:专用陶瓷电容器 HF CHIP RoHS:否 制造商:Panasonic Electronic Components 电容:470 pF 容差:10 % 电压额定值:250 VAC 工作温度范围:- 25 C to + 125 C 端接类型:SMD/SMT 外壳代码 - in: 外壳代码 - mm: |
| MA28151GBN | 功能描述:专用陶瓷电容器 HF CHIP RoHS:否 制造商:Panasonic Electronic Components 电容:470 pF 容差:10 % 电压额定值:250 VAC 工作温度范围:- 25 C to + 125 C 端接类型:SMD/SMT 外壳代码 - in: 外壳代码 - mm: |
| MA28151JBB | 功能描述:专用陶瓷电容器 HF CHIP RoHS:否 制造商:Panasonic Electronic Components 电容:470 pF 容差:10 % 电压额定值:250 VAC 工作温度范围:- 25 C to + 125 C 端接类型:SMD/SMT 外壳代码 - in: 外壳代码 - mm: |
| MA28151JBN | 功能描述:专用陶瓷电容器 HF CHIP RoHS:否 制造商:Panasonic Electronic Components 电容:470 pF 容差:10 % 电压额定值:250 VAC 工作温度范围:- 25 C to + 125 C 端接类型:SMD/SMT 外壳代码 - in: 外壳代码 - mm: |
| MA28151KBB | 功能描述:专用陶瓷电容器 HF CHIP RoHS:否 制造商:Panasonic Electronic Components 电容:470 pF 容差:10 % 电压额定值:250 VAC 工作温度范围:- 25 C to + 125 C 端接类型:SMD/SMT 外壳代码 - in: 外壳代码 - mm: |
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