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: 40/72页
文件大小: 857K
代理商: MA28140
MA28140
40/72
The calculation of PW’ gives: PW’ = PW - 1 = 100 - 1 = 99—> 16#63
The value of the ROM at address 003 is: 16#63
The calculation of NW’ gives: NW’ = 256 - NW = 256 - 100 = 156—> 16#9C
The value of the ROM at address 004 is: 16#9B
The authenticated MAP ID is 5 bits long. The 5 LSBs of the ROM value @ address 05 correspond to the authenticated
MAP ID, the 3 MSBs can be either 0 or 1 (0 for example).
The value of the ROM at address 005 is: 16#15
CPDU Packet Header octet 1 contains the following fields:
Version number
: 2#000 in accordance with ref 1
Type
: 1 for CPDU
Data Fields Header flag
: 0 for CPDU
Application Process ID (3 MSBs)
: 2#100
The value of the ROM at address 006 is: 16#14
CPDU Packet Header octet 2 contains the following field:
Application Process ID (8 LSBs)
The value of the ROM at address 007 is: 16#56
: 2#01010110
The ROM will be programmed as follows:
Address
Data
000
001
002
003
004
005
006
007
03
01
80
63
9C
15
14
56
Knapsack and Hashing Key
If the Knapsack key is (example from ref.2 appendix B2)
W0 : 00 01 02 03 04 05
W1 : 06 07 08 09 0A 0B
W59 : 62 63 64 65 66 67
And if the Hashing Key is : C0...C59 A AA AA AA AA AA AA AA
MSB
The ROM will be programmed as follows:
Address
Data
200
201
202
203
204
205
206
207
etc
367
368
369
370
etc
36E
36F
05
04
03
02
01
00
0B
0A
etc
62
05
55
55
55
55
55
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