參數(shù)資料
型號: TSS463-AAR
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: VAN Data Link Controller with Serial Interface
中文描述: 1 CHANNEL(S), 1M bps, SERIAL COMM CONTROLLER, PDSO16
封裝: SOP-16
文件頁數(shù): 46/60頁
文件大小: 816K
代理商: TSS463-AAR
46
TSS463-AA
4205B–AUTO–12/04
The second case is that another module on the bus replies with an in-frame reply. In this
case the message type will pass immediately into the after reception state, without pass-
ing the after transmission state.
In the third case the TSS463AA has not yet started to transmit the reply request, when
another module either requests a reply, and gets it, or transmits a deferred reply. Warn-
ing! This should be avoided as it may result in an illegal message type (Illegal reply
Request).
The immediate Reply Message will attempt to transmit an in-frame reply, using the data
in the message buffer.
Above a Deferred Reply Message is shown. This message type will immediately trans-
mit a deferred reply frame.
Finally there is the Reply Request Detector Message type. Its purpose is to receive a
reply request frame and notify the processor, without transmitting an in-frame reply.
The table above shows all inactive messages types. The last combination will transmit a
reply request, but will not receive the reply since its buffer is tagged as occupied.
Reply Request Message without transmission
RNW
RTR
CHTx
CHRx
Initial setup
1
1
Don’t care
0
After reception
1
1
Unchanged
1
Immediate Reply Message
RNW
RTR
CHTx
CHRx
Initial setup
1
0
0
0
After transmission
1
0
1
1
Deferred Reply Message
RNW
RTR
CHTx
CHRx
Initial setup
1
0
0
1
After reception
(of reply request)
1
0
1
1
Reply Request Detection Message
RNW
RTR
CHTx
CHRx
Initial setup
1
0
1
0
After reception
1
0
1
1
Inactive Message
RNW
RTR
CHTx
CHRx
Recommended
Don’t care
Don’t care
1
1
After transmission
0
0
1
Don’t care
After reception
0
1
Don’t care
1
Illegal reply request
1
1
0
1
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