- 您现在的位置：买卖IC网 > PDF目录383307 > MA28140 (Dynex Semiconductor Ltd.) Packet Telecommand Decoder PDF资料下载
参数资料
| 型号： | MA28140 |
| 厂商： | Dynex Semiconductor Ltd. |
| 英文描述： | Packet Telecommand Decoder |
| 中文描述： | 包遥控解码器 |
| 文件页数： | 3/72页 |
| 文件大小： | 857K |
| 代理商： | MA28140 |
第1页第2页当前第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页
MA28140
3/72
Figure 1: Block Diagram of a TC Decoder Subsystem
PTD
External
Authentication
Unit
Telemetry
I/F
MAP
Demultiplexer
I/F
CPDU
I/F
RAM
Authentication
Configuration
ROM
Back-up
Power
Supply
Command
Pulses
(256 max)
Serial
Data link
(62 max)
Local Bus
Clock
Transponder
I/F
TC input
NRZ or PSK
(6 max)
2. TC DECODER SUBSYSTEM OVERVIEW
An ESA/CCSDS Telecommand Decoder subsystem
including the PTD and fulfilling the receiving-end functions
established in the Packet Telecommand Standard (ref 1) is
shown in Figure 1.
The PTD requires the following additional hardware to fulfil
the requirements of the Telecommand Decoder Specification
(ref 2):
Transponder I/F including demodulators for PSK TC
inputs.
Telemetry I/F. The telemetry reporting signals can be
directly connected to a Virtual Channel Multiplexer (ref 3).
Command Pulse Distribution Unit I/F. This function
performs decoding of commands present on the local bus
and power amplification. The PTD ASIC associated with
the CPDU I/F can manage 256 pulse outputs.
MAP demultiplexer I/F. This interface is composed of a
demultiplexer to provide the TC segment data to various
Data Management System interfaces. The demultiplexer
is controlled by the MAP data present on the Local Bus.
The PTD ASIC can manage 62 different serial data
interfaces (63 if AU is disabled).
Memories. There are 2 different memories:
- RAM (2Kx8) used to store the received TC data and
protocol variables (programme authentication key for
instance) and eventually to store the TC segment
available for further processing by the Data Management
System. If this memory is used to store the recovery LAC
counter (Authentication function), it must be a non-volatile
memory.
- ROM (1Kx8) divided in two parts:
- Configuration part, used to provide the Mission
Specific Data.
- Authentication part, used to provide the fixed
Authentication key.
External Authentication Unit (optional). Although an AU is
implemented in the PTD, it is also possible to use an
external AU if the mission requires a different
authentication algorithm. This external unit accesses the
RAM in order to authenticate a TC segment.
相关PDF资料 |
PDF描述 |
|---|---|
| MA28151 | Radiation hard Programmable Communication Interface |
| MA28155 | Radiation Hard Programmable Peripheral Interface |
| MA31750 | High Performance MIL-STD-1750 Microprocessor |
| MA31751 | Memory Management & Block Protection Unit |
| MA31753 | DMA Controller (DMAC) For An MA31750 System |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MA28150FBB | 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: |
| MA28150FBN | 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: |
| MA28150GBB | 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: |
| MA28150GBN | 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: |
| MA28150JAB | 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: |
发布紧急采购，3分钟左右您将得到回复。