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参数资料
| 型号： | MCP2515DM-PTPLS |
| 厂商： | Microchip Technology |
| 文件页数： | 60/92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) |
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MCP2515
10.4
Loopback Mode
10.5
Normal Mode
Loopback mode will allow internal transmission of
messages from the transmit buffers to the receive
buffers without actually transmitting messages on the
CAN bus. This mode can be used in system
development and testing.
In this mode, the ACK bit is ignored and the device will
allow incoming messages from itself just as if they were
coming from another node. The Loopback mode is a
silent mode, meaning no messages will be transmitted
while in this state (including error flags or Acknowledge
signals). The TXCAN pin will be in a recessive state.
The filters and masks can be used to allow only
particular messages to be loaded into the receive
registers. The masks can be set to all zeros to provide
a mode that accepts all messages. The Loopback
mode is activated by setting the mode request bits in
the CANCTRL register.
Normal mode is the standard operating mode of the
MCP2515. In this mode, the device actively monitors all
bus messages and generates Acknowledge bits, error
frames, etc. This is also the only mode in which the
MCP2515 will transmit messages over the CAN bus.
REGISTER 10-1:
CANCTRL – CAN CONTROL REGISTER
(ADDRESS: XFh)
R/W-1
REQOP2
R/W-0
REQOP1
R/W-0
REQOP0
R/W-0
ABAT
R/W-0
OSM
R/W-1
CLKEN
R/W-1
CLKPRE1
R/W-1
CLKPRE0
bit 7
Legend:
bit 0
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 7-5
bit 4
bit 3
bit 2
bit 1-0
REQOP<2:0>: Request Operation mode bits
000 = Set Normal Operation mode
001 = Set Sleep mode
010 = Set Loopback mode
011 = Set Listen-Only mode
100 = Set Configuration mode
All other values for REQOP bits are invalid and should not be used
On power-up, REQOP = b’111’
ABAT: Abort All Pending Transmissions bit
1 = Request abort of all pending transmit buffers
0 = Terminate request to abort all transmissions
OSM: One-Shot mode bit
1 = Enabled. Message will only attempt to transmit one time
0 = Disabled. Messages will reattempt transmission, if required
CLKEN: CLKOUT Pin Enable bit
1 = CLKOUT pin enabled
0 = CLKOUT pin disabled (Pin is in high-impedance state)
CLKPRE<1:0>: CLKOUT Pin Prescaler bits
00 = F CLKOUT = System Clock/1
01 = F CLKOUT = System Clock/2
10 = F CLKOUT = System Clock/4
11 = F CLKOUT = System Clock/8
DS21801G-page 60
? 2003-2012 Microchip Technology Inc.
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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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