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參數(shù)資料
| 型號： | TSS461C-TDRZ |
| 廠商： | ATMEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | VAN Data Link Controller |
| 中文描述： | 1 CHANNEL(S), 1M bps, LOCAL AREA NETWORK CONTROLLER, PDSO24 |
| 封裝： | ROHS COMPLIANT, SO-24 |
| 文件頁數(shù)： | 46/57頁 |
| 文件大?。?/td> | 423K |
| 代理商： | TSS461C-TDRZ |
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46
TSS461C
4193G–AUTO–12/04
The Last Error Status Register (0x07) informs about the trouble encountered:
Failure cases:
–
Code viol (CV error bit)
–
Acknowledge error (ACKE error bit)
–
CRC error (FCSE error bit)
It should be noticed that contention is considered as normal CSMA/CD protocol
and, therefore, is not taken into account in failure cases. So, an “infinite” number of
attempts can be performed if bus contention occurs continuously.
There is only one retry counter for all channels. When the user writes the Max_Retries
value, all channels start their transmission with this parameter.
Rearbitrate
The purpose of rearbitrate feature is to postpone a channel already in transmission in
order to authorize an higher priority (see Section “Priority Among the Different Chan-
nels”) message to be transmit.
Typical Example
Max_retries = 1 (2 transmissions attempts).
If Ch8 is in a the retry loop and the user wants to transmit the Ch5 without waiting
the end of the loop, the user can use the rearbitrate command.
Then, the TSS461C will wait the end of the current transmission, reload the retries
counter and enable the Ch5 to transmit.
At the end of this transmission Ch5, either when the attempt is successful or either
when the exceeded retry count is reached, the retries counter is reloaded and the
transmission is activated for the Ch8 again.
Figure 25.
Rearbitrate Example
F
X
E
R
VCC
EOF+IFS
(
Delay
Viol
S
X
(
(
*
(
E
(
stand-by
F
X
S
X
(
Delay
Viol
S
E
a
Delay
V iol
EOF+IFS: 8 + 4 Tmeslots
Delay Viol: 12 Tmeslots
* (not seen by application means no IT generation)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TSS461CD | LAN Node Controller |
| TSS461CR | LAN Node Controller |
| TSS463-AA | TSS463-AA [Updated 3/03. 60 Pages] |
| TSS463D | Industrial Control IC |
| TSS463R | Industrial Control IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TSS461CVAN | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:Van Controller Serial Interface |
| TSS461E | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:VAN Data Link Controller |
| TSS461E_06 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:VAN Data Link Controller |
| TSS461E-TDRA-9 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:VAN Data Link Controller |
| TSS461E-TDRZ-9 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:VAN Data Link Controller |
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