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| 型号： | MCP2515DM-PTPLS |
| 厂商： | Microchip Technology |
| 文件页数： | 33/92页 |
| 文件大小： | 0K |
| 描述： | BOARD DAUGHTER PICTAIL MCP2515 |
| 标准包装： | 1 |
| 系列： | * |
| 主要目的： | 接口，CAN 控制器 |
| 嵌入式： | 是，MCU，8 位 |
| 已用 IC / 零件： | MCP2515，MCP2551 |
| 主要属性： | 置于 PICtail Plus 子板内的 CAN 控制器和 CAN 收发器 |
| 已供物品： | 板，CD |
| 产品目录页面： | 685 (CN2011-ZH PDF) |
| 相关产品： | MCP2515T-I/ST-ND - IC CAN CONTROLLER W/SPI 20TSSOP MCP2515T-I/SO-ND - IC CAN CONTROLLER W/SPI 18SOIC MCP2515T-E/ST-ND - IC CAN CONTROLLER W/SPI 20TSSOP MCP2515T-E/SO-ND - IC CAN CONTROLLER W/SPI 18SOIC MCP2515-E/ST-ND - IC CAN CONTROLLER W/SPI 20TSSOP MCP2515-E/SO-ND - IC CAN CONTROLLER W/SPI 18SOIC MCP2515-E/P-ND - IC CAN CONTROLLER W/SPI 18DIP MCP2515-I/ST-ND - IC CAN CONTROLLER W/SPI 20TSSOP MCP2515-I/SO-ND - IC CAN CONTROLLER W/SPI 18SOIC MCP2515-I/P-ND - IC CAN CONTROLLER W/SPI 18DIP 更多... |
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MCP2515
4.5.3
FILHIT BITS
If the BUKT bit is clear, there are six codes
Filter matches on received messages can be
determined by the FILHIT bits in the associated
RXBnCTRL register. RXB0CTRL.FILHIT0 for buffer 0
and RXB1CTRL.FILHIT<2:0> for buffer 1.
corresponding to the six filters. If the BUKT bit is set,
there are six codes corresponding to the six filters, plus
two additional codes corresponding to RXF0 and RXF1
filters that roll over into RXB1.
The three FILHIT bits for receive buffer 1 (RXB1) are
4.5.4
MULTIPLE FILTER MATCHES
coded as follows:
If more than one acceptance filter matches, the FILHIT
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101 = Acceptance Filter 5 (RXF5)
100 = Acceptance Filter 4 (RXF4)
011 = Acceptance Filter 3 (RXF3)
010 = Acceptance Filter 2 (RXF2)
001 = Acceptance Filter 1 (RXF1)
000 = Acceptance Filter 0 (RXF0)
bits will encode the binary value of the lowest
numbered filter that matched. For example, if filter
RXF2 and filter RXF4 match, FILHIT will be loaded with
the value for RXF2. This essentially prioritizes the
acceptance filters with a lower-numbered filter having
higher priority. Messages are compared to filters in
ascending order of filter number. This also ensures that
Note:
000 and 001 can only occur if the BUKT bit
in RXB0CTRL is set, allowing RXB0
the message will only be received into one buffer. This
implies that RXB0 has a higher priority than RXB1.
messages to roll over into RXB1.
4.5.5
CONFIGURING THE MASKS AND
RXB0CTRL contains two copies of the BUKT bit and
the FILHIT<0> bit.
The coding of the BUKT bit enables these three bits to
be used similarly to the RXB1CTRL.FILHIT bits and to
distinguish a hit on filter RXF0 and RXF1 in either
FILTERS
The mask and filter registers can only be modified
when the MCP2515 is in Configuration mode (see
RXB0 or after a roll over into RXB1.
Note:
The mask and filter registers read all ' 0 '
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111 = Acceptance Filter 1 (RXB1)
110 = Acceptance Filter 0 (RXB1)
001 = Acceptance Filter 1 (RXB0)
000 = Acceptance Filter 0 (RXB0)
when in any mode except Configuration
mode.
FIGURE 4-5:
MESSAGE ACCEPTANCE MASK AND FILTER OPERATION
RXFn 0
Acceptance Filter Register
RXMn 0
Acceptance Mask Register
RXFn 1
RXFn n
RXMn 1
RXMn n
RxRqst
Message Assembly Buffer
Identifier
? 2003-2012 Microchip Technology Inc.
DS21801G-page 33
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MCP2515-E | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Stand-Alone CAN Controller with SPI Interface |
| MCP2515-E/ML | 制造商:Microchip Technology Inc 功能描述: |
| MCP2515-E/P | 功能描述:网络控制器与处理器 IC W/ SPI Inter 125dC RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| MCP2515-E/SO | 功能描述:网络控制器与处理器 IC W/ SPI Inter 125dC RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| MCP2515-E/SORB4 | 制造商:Microchip Technology Inc 功能描述: |
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