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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)： | 37/57頁 |
| 文件大?。?/td> | 423K |
| 代理商： | TSS461C-TDRZ |
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37
TSS461C
4193G–AUTO–12/04
Message Length And Status
Register
The message length and status register at address (base_address + 0x03) is also 8 bits
wide. It indicates the length reserved for the message in the Message DATA RAM area.
Read/Write register.
M_L [4:0]: Message Length
The 5 high bits of this register allow the user to specify either the length of the message
to be transmitted, or the maximum length of a message receivable in the pointed recep-
tion buffer.
Note that the first byte in this register does not contain data, but the length of the mes-
sage received. This implies that the length value has to be equal to or greater than the
maximum length of a message to be received in this buffer (or the length of a message
to be transmitted) plus 1. Thus allowing a maximum length of 30 bytes and a minimum
length of 0 byte.
If the value of this field is illegal (i.e 0x00) then this message pointer is defined as being
a link (see section “Message Pointer Register” and Section “Linked Channels”).
CHER: Channel Error Status
and Abort Command
As status, this bit is set by the TSS461C when error occurs in transmission or on a
received frame. The user must reset it.
To abort the transmission defined in the channel, this bit can be set to1 by the user (see
Section “Retries, Rearbitrate and Abort” and Section “Abort”).
CHTx: Channel Transmitted and
Transmit Enable Command
7
6
5
4
3
2
1
0
M_L 4
M_L 3
M_L 2
M_L 1
M_L 0
CHER
CHTx
CHRx
base_address
+ 0x03
M_L [4:0] = 0x00
Linked channel
M_L [4:0] = 0x01
Frame with no DATA field (*)
M_L [4:0] = 0x02
Frame with 1 DATA byte
- - - - - - -
- - - - - - - - - - - - - - - - - - - - - -
M_L [4:0] = 0x1D
Frame with 28 DATA bytes
M_L [4:0] = 0x1E
Frame with 29 DATA bytes
M_L [4:0] = 0x1F
Frame with 30 DATA bytes
(*) Different of a reply request frame with no in-frame reply (deferred reply).
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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