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参数资料
| 型号： | TSS463A-TERZ |
| 厂商： | Atmel Corp. |
| 英文描述： | VAN Data Link Controller with Serial Interface |
| 中文描述： | 凡数据与串行接口链路控制器 |
| 文件页数： | 23/60页 |
| 文件大小： | 816K |
| 代理商： | TSS463A-TERZ |
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23
TSS463-AA
4205B–AUTO–12/04
Status bits give permanent information on the diagnosis performed, whatever the pro-
grammed operating mode. This is encoded over three bits: Sa, Sb and Sc.
Sa and Sb bits indicate the four possible states of the VAN bus.
Table 3.
Status Bits: Sa and Sb
Sc: As soon as one of the three inputs (RXD2, RXD1, RXD0) differs from the others
in the input comparison analysis performed by the diagnosis system, Sc is set.
The only way to reset this status bit is through the RI signal or a general reset.
Internal Operations
Digital Filtering
If several spurious pulses occur during one bit, the diagnosis for defective conductor
may occur. To avoid such errors, digital filters are implemented.
Filtering operation is based on sampling of the comparator output signals. A transition is
taken into account only if it is observed over five samples (1/16
th
of timeslot).
Transition Analyses
These analyses are continuously done on the effective edges on comparators after digi-
tal filtering.
Asynchronous diagnosis
The asynchronous diagnosis is done by comparing the number of edges on DATA
and DATA.
If four edges are detected on one input and no edges on the other during the same
period, the second input is considered faulty and the diagnosis mode will change to
one of the degraded modes.
Synchronous diagnosis
The synchronous diagnosis counts the number of edges on the data input
connected to the reception logic during one SDC period.
If there are less than four edges during one SDC period, the diagnosis mode will
change to the major error mode.
Sa
Sb
Communication
0
0
Mode
Nominal
Fault
No fault on VAN bus
Status
Differential communication on DATA and DATA
0
1
Mode
Degraded on DATA
Fault
Fault on DATA
Status
Communication on DATA
1
0
Mode
Degraded on DATA
Fault
Fault on DATA
Status
Communication on DATA
1
1
Mode
Major error
Fault
Fault on DATA and DATA
Status
No communication on DATA and DATA (attempt to communicate
alternatively on DATA then DATA every SDC period)
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相关代理商/技术参数 |
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|---|---|
| TSS463B | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Serial VAN Data Link Controller |
| TSS463B_03 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Serial VAN Data Link Controller |
| TSS463B_04 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:VAN Data Link Controller with Serial Interface |
| TSS463B-TERA | 制造商:Temic 功能描述:LAN Node Controller, 16 Pin, SOP |
| TSS463B-TERA-9 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:VAN Data Link Controller with Serial Interface |
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