參數(shù)資料
型號： SJA1000
廠商： NXP SEMICONDUCTORS
元件分類： 微控制器/微處理器
英文描述： Stand-alone CAN controller(單機CAN控制器)
中文描述： 2 CHANNEL(S), 1M bps, LOCAL AREA NETWORK CONTROLLER, PDIP28
封裝： 0.600 INCH, PLASTIC, DIP-28
文件頁數(shù)： 29/68頁
文件大小： 234K
代理商： SJA1000
2000 Jan 04
29
Philips Semiconductors
Product specification
Stand-alone CAN controller
SJA1000
5.
The abort transmission bit is used when the CPU requires the suspension of the previously requested transmission,
e.g. to transmit a more urgent message before. A transmission already in progress is not stopped. In order to see if
the original message has been either transmitted successfully or aborted, the transmission complete status bit
should be checked. This should be done after the transmit buffer status bit has been set to logic 1 or a transmit
interrupt has been generated.
It should be noted that a transmit interrupt is generated even if the message was aborted because the transmit buffer
status bit changes to ‘released’.
If the transmission request was set to logic 1 in a previous command, it cannot be cancelled by setting the
transmission request bit to logic 0. The requested transmission may be cancelled by setting the abort transmission
bit to logic 1.
6.
6.4.5
S
TATUS
R
EGISTER
(SR)
The content of the status register reflects the status of the CAN controller. The status register appears to the CPU as a
read only memory.
Table 14
Bit interpretation of the status register (SR); CAN address 2
BIT
SYMBOL
NAME
VALUE
FUNCTION
SR.7
BS
Bus Status; note 1
1
bus-off; the CAN controller is not involved in bus
activities
bus-on; the CAN controller is involved in bus
activities
error; at least one of the error counters has
reached or exceeded the CPU warning limit
defined by the Error Warning Limit Register
(EWLR)
ok; both error counters are below the warning limit
transmit; the CAN controller is transmitting a
message
idle
receive; the CAN controller is receiving a
message
idle
complete; last requested transmission has been
successfully completed
incomplete; previously requested transmission is
not yet completed
released; the CPU may write a message into the
transmit buffer
locked; the CPU cannot access the transmit
buffer; a message is either waiting for
transmission or is in the process of being
transmitted
0
SR.6
ES
Error Status; note 2
1
0
1
SR.5
TS
Transmit Status; note 3
0
1
SR.4
RS
Receive Status; note 3
0
1
SR.3
TCS
Transmission Complete
Status; note 4
0
SR.2
TBS
Transmit Buffer Status;
note 5
1
0
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SJA1000/N1,112 功能描述:網(wǎng)絡(luò)控制器與處理器 IC STAND-ALONE CAN CONTROLLER RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
SJA1000/N1112 制造商:NXP Semiconductors 功能描述:IC CAN CONTROLLER 1000 DIP28
SJA1000N 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Stand-alone CAN controller
SJA1000T 制造商:NXP Semiconductors 功能描述:
SJA1000T/N,112 功能描述:網(wǎng)絡(luò)控制器與處理器 IC STAND ALONE CAN CONTROLLER RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
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