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參數(shù)資料
| 型號(hào)： | 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)： | 45/57頁 |
| 文件大?。?/td> | 423K |
| 代理商： | TSS461C-TDRZ |
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45
TSS461C
4193G–AUTO–12/04
Retries, Rearbitrate
and Abort
Retries and rearbitrate commands are located, in the Transmit Control Register and in
the Command Register, respectively. An abort command is located in each channel reg-
ister set, in the Message Length & Status Register (base_address + 0x03). These three
commands are available only when the TSS461C is producer.
Figure 24.
Transmit Function
Retries
The purpose of retries feature is to provide, the capability of retrying a transmit request
in case of failure, when a node tries to reach another node, either on normal DATA
frame or on REPLY REQUEST frame.
The maximum number of retries is programmable through MR[3:0] of the Transmit Con-
trol Register (0x01). When a channel is enable – bit CHTx = 0 of Message Length &
Status Register, a 4-bit counter is loaded with MR[3:0]. At each attempt, this counter will
be countdown. To 0, an IT TE is set in the Interrupt Status Register (0x09), and the
transmission is stopped.
MR[3:0] = 1 indicates 1 retry, hence 2 transmission attempts will be performed (see
Table 4). The number of retries performed, as well as the current channel number asso-
ciated, can be read in the Transmission Status Register (0x05).
Activate
Ch. Enabled in
Xmit Mode
no
Select the lowest
Ch. number and
load”Max - retries”
yes
Abort activated
on current Ch.
yes
Disable of
current Ch.
no
Wait for bus free
(EOF+IFS= 12 Timeslots)
Retry needed
abort
no
no
Abort required
on current Ch.
rearbitrate
rearbitrate
yes
Transmit frame
and wait for the end
Decrement
retry counter
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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