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參數(shù)資料
| 型號： | 8213AM |
| 英文描述： | Telecommunication IC |
| 中文描述： | 通信集成電路 |
| 文件頁數(shù)： | 8/33頁 |
| 文件大小： | 171K |
| 代理商： | 8213AM |
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SM8213AM
NIPPON PRECISION CIRCUITS—8
Code words (address and message signals)
Each code word comprises 32 bits as shown in table 2.
Call number to call sign conversion
This conversion expands a 7-digit decimal call num-
ber into a 21-bit binary call sign, as shown in figure
2.
After expansion, the high-order 18 bits are assigned
to bits 2 to 19 (address signal), and the low-order 3
bits are the user-defined frame identification pattern,
which is stored in ID-ROM. The two function bits
define which of four call functions is active.
Table 2. Code word format
Code word
Bit number
1 (MSB)
1
1. The MSB is the address/message code word control bit. It is 0 for an address signal, and 1 for a message signal.
2. Bits 2 to 21 contain the address or message information.
3. Bits 22 to 31 are BCH(31,21) format generated check bits, where BCH(n,k) = BCH(word length, number of information bits).
4. The LSB is an even-parity bit for bits 1 to 31.
2 to 19
2
20, 21
2
22 to 31
3
32 (LSB)
4
Address signal
0
Address bits
Function bits
Check bits
Even-parity bit
Message signal
1
Message bits
Check bits
Even-parity bit
20
21
Function
0
0
A call
0
1
B call
1
0
C call
1
1
D call
Figure 2. Call number to call sign conversion
1
2
3
4
5
6
7
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21
MSB
LSB
7 - digit decimal call signal (gap code) (8 to 2000000)
21 - bit binary conversion
Call sign
0
1
2
19
20
21
32
31
22
Frame
identification
pattern
Even - parity bit
(for bits 1 to 31)
BCH(31, 21) generated check bits
Flag : "0" = Adderss signal
Function bits
Bits 2 to 19 (18 bits)
Bits 22 to 31 (10 bits)
P
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 8215-8009 | STECKER SUB D STAHLKRAGEN 15POL |
| 8225-8009 | STECKER SUB D STAHLKRAGEN 25POL |
| 8209-8009 | STECKER SUB D STAHLKRAGEN 9POL |
| 8237-8009 | STECKER SUB D STAHLKRAGEN 37POL |
| 821INSTSET | MPC821 PowerPC Instruction Set |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 8213B/13 | 制造商:WIELAND 功能描述:15 A, STRIP TERMINAL BLOCK, 1 ROW, 1 DECK |
| 8213B/15VR | 制造商:Wieland 功能描述:15 A, STRIP TERMINAL BLOCK, 1 ROW, 1 DECK |
| 8213B/20 | 制造商:WIELAND 功能描述:15 A, STRIP TERMINAL BLOCK, 1 ROW, 1 DECK |
| 8213B/3-OB | 制造商:Wieland Electric Inc 功能描述: |
| 8213B/4 | 制造商:Wieland 功能描述:15 A, STRIP TERMINAL BLOCK, 1 ROW, 1 DECK |
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