參數(shù)資料
型號(hào)： MCP2510T-E/SO
廠商： Microchip Technology
文件頁(yè)數(shù)： 36/80頁(yè)
文件大?。?/td> 0K
描述： IC CAN CONTROLLER W/SPI 18-SOIC
標(biāo)準(zhǔn)包裝： 1,100
控制器類型： CAN 接口
接口： SPI
電源電壓： 4.5 V ~ 5.5 V
電流 - 電源： 10mA
工作溫度： -40°C ~ 125°C
安裝類型： 表面貼裝
封裝/外殼： 18-SOIC（0.295"，7.50mm 寬）
供應(yīng)商設(shè)備封裝： 18-SOIC
包裝： 帶卷 (TR)
配用： DV251001-ND - KIT DEVELOPMENT CAN MCP2510
2007 Microchip Technology Inc.
DS21291F-page 41
MCP2510
6.0
ERROR DETECTION
The CAN protocol provides sophisticated error detec-
tion mechanisms. The following errors can be detected.
6.1
CRC Error
With the Cyclic Redundancy Check (CRC), the trans-
mitter calculates special check bits for the bit sequence
from the start of a frame until the end of the data field.
This CRC sequence is transmitted in the CRC Field.
The receiving node also calculates the CRC sequence
using the same formula and performs a comparison to
the received sequence. If a mismatch is detected, a
CRC error has occurred and an error frame is gener-
ated. The message is repeated.
6.2
Acknowledge Error
In the acknowledge field of a message, the transmitter
checks if the acknowledge slot (which has sent out as
a recessive bit) contains a dominant bit. If not, no other
node has received the frame correctly. An acknowl-
edge error has occurred; an error frame is generated;
and the message will have to be repeated.
6.3
Form Error
lf a node detects a dominant bit in one of the four seg-
ments including end of frame, interframe space,
acknowledge delimiter or CRC delimiter; then a form
error has occurred and an error frame is generated.
The message is repeated.
6.4
Bit Error
A Bit Error occurs if a transmitter sends a dominant bit
and detects a recessive bit or if it sends a recessive bit
and detects a dominant bit when monitoring the actual
bus level and comparing it to the just transmitted bit. In
the case where the transmitter sends a recessive bit
and a dominant bit is detected during the arbitration
field and the acknowledge slot, no bit error is generated
because normal arbitration is occurring.
6.5
Stuff Error
lf, between the start of frame and the CRC delimiter, six
consecutive bits with the same polarity are detected,
the bit stuffing rule has been violated. A stuff error
occurs and an error frame is generated. The message
is repeated.
6.6
Error States
Detected errors are made public to all other nodes via
error frames. The transmission of the erroneous mes-
sage is aborted and the frame is repeated as soon as
possible. Furthermore, each CAN node is in one of the
three error states “error-active”, “error-passive” or “bus-
off” according to the value of the internal error counters.
The error-active state is the usual state where the bus
node can transmit messages and active error frames
(made of dominant bits) without any restrictions. In the
error-passive state, messages and passive error
frames (made of recessive bits) may be transmitted.
The bus-off state makes it temporarily impossible for
the station to participate in the bus communication.
During this state, messages can neither be received
nor transmitted.
6.7
Error Modes and Error Counters
The MCP2510 contains two error counters: the
Receive Error Counter (REC) (see Register 6-2), and
the Transmit Error Counter (TEC) (see Register 6-1).
The values of both counters can be read by the MCU.
These counters are incremented or decremented in
accordance with the CAN bus specification.
The MCP2510 is error-active if both error counters are
below the error-passive limit of 128. It is error-passive
if at least one of the error counters equals or exceeds
128. It goes to bus-off if the transmit error counter
equals or exceeds the bus-off limit of 256. The device
remains in this state, until the bus-off recovery
sequence is received. The bus-off recovery sequence
consists of 128 occurrences of 11 consecutive reces-
sive bits (see Figure 6-1). Note that the MCP2510, after
going bus-off, will recover back to error-active, without
any intervention by the MCU, if the bus remains idle for
128 X 11 bit times. If this is not desired, the error inter-
rupt service routine should address this. The current
error mode of the MCP2510 can be read by the MCU
via the EFLG register (Register 6-3).
Additionally, there is an error state warning flag bit,
EFLG:EWARN, which is set if at least one of the error
counters equals or exceeds the error warning limit of
96. EWARN is reset if both error counters are less than
the error warning limit.
相關(guān)PDF資料
PDF描述
MCP2515T-E/ST IC CAN CONTROLLER W/SPI 20TSSOP
MCP2551-E/SN IC TRANSCEIVER CAN HI-SPD 8-SOIC
MCP4011T-503E/SN IC DGTL POT 50K 1CH 8SOIC
MCP4019T-103E/LT IC DGTL POT 10K 128TAPS SC70-5
MCP4021T-502E/MC IC DGTL POT 5K 1CH 8DFN
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MCP2510T-I/SO 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Stand-alone CAN 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
MCP2510T-I/ST 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Stand-alone CAN 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
MCP2515 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Stand-Alone CAN Controller With SPI Interface
MCP2515_12 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Stand-Alone CAN Controller with SPI Interface
MCP2515DM-BM 功能描述:網(wǎng)絡(luò)開發(fā)工具 CAN Bus Monitor Demo Board RoHS:否 制造商:Rabbit Semiconductor 產(chǎn)品:Development Kits 類型:Ethernet to Wi-Fi Bridges 工具用于評(píng)估:RCM6600W 數(shù)據(jù)速率:20 Mbps, 40 Mbps 接口類型:802.11 b/g, Ethernet 工作電源電壓:3.3 V
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*