參數(shù)資料
型號(hào)： 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(jī)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(yè)數(shù)： 16/68頁(yè)
文件大?。?/td> 234K
代理商： SJA1000
2000 Jan 04
16
Philips Semiconductors
Product specification
Stand-alone CAN controller
SJA1000
Notes
1.
When the transmit error counter exceeds the limit of 255 [the bus status bit is set to logic 1 (bus-off)] the
CAN controller will set the reset request bit to logic 1 (present) and an error interrupt is generated, if enabled. It will
stay in this mode until the CPU clears the reset request bit. Once this is completed the CAN controller will wait the
minimum protocol-defined time (128 occurrences of the bus-free signal). After that the bus status bit is cleared
(bus-on), the error status bit is set to logic 0 (ok), the error counters are reset and an error interrupt is generated, if
enabled.
Errors detected during reception or transmission will affect the error counters according to the CAN 2.0B protocol
specification. The error status bit is set when at least one of the error counters has reached or exceeded the CPU
warning limit of 96. An error interrupt is generated, if enabled.
If both the receive status and the transmit status bits are logic 0 (idle) the CAN-bus is idle.
The transmission complete status bit is set to logic 0 (incomplete) whenever the transmission request bit is set to
logic 1. The transmission complete status bit will remain at logic 0 (incomplete) until a message is transmitted
successfully.
If the CPU tries to write to the transmit buffer when the transmit buffer status bit is at logic 0 (locked), the written byte
will not be accepted and will be lost without being indicated.
When a message that shall be received has passed the acceptance filter successfully (i.e. earliest after arbitration
field), the CAN controller needs space in the RXFIFO to store the message descriptor. Accordingly there must be
enough space for each data byte which has been received. If there is not enough space to store the message, that
message will be dropped and the data overrun condition will be indicated to the CPU only, if this received message
has no errors until the last but one bit of end of frame (message becomes valid).
After reading a message stored in the RXFIFO and releasing this memory space with the command release receive
buffer, this bit is cleared. If there is another message available within the FIFO this bit is set again with the next bit
quantum (t
scl
).
2.
3.
4.
5.
6.
7.
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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(fēng)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(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
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