參數(shù)資料
型號: MCP25050T-I/SL
元件分類: 微控制器/微處理器
英文描述: SPECIALTY MICROPROCESSOR CIRCUIT, PDSO14
封裝: 0.150 INCH, PLASTIC, SOIC-14
文件頁數(shù): 62/64頁
文件大?。?/td> 1232K
代理商: MCP25050T-I/SL
2003 Microchip Technology Inc.
DS21664C-page 7
MCP2502X/5X
REGISTER 2-1:
TEC - TRANSMITTER ERROR COUNTER
REGISTER 2-2:
REC - RECEIVER ERROR COUNTER
FIGURE 2-3:
BIT TIME PARTITIONING
2.4
Bit Timing Logic
The Bit Timing Logic (BTL) monitors the bus line input
and handles the bus-related bit timing based on the
CAN protocol. The BTL synchronizes on a recessive-
to-dominant bus transition at Start-of-Frame (hard
synchronization) and on any further recessive-to-
dominant bus line transition if the CAN controller itself
does not transmit a dominant bit (resynchronization).
The BTL also provides programmable time segments
to compensate for the propagation delay time, phase
shifts and to define the position of the sample point
within the bit time. These programmable segments are
made up of integer units called Time Quanta (TQ). The
nominal bit time is calculated by programming the TQ
length and the number of TQ in each time segment, as
discussed below.
2.4.1
TIME QUANTUM (TQ)
Time Quantum is a fixed unit of time derived from the
oscillator period. There is a programmable baud rate
prescaler (BRP) (with integral values ranging from 1 to
64) as well as a fixed division by two for clock
generation.
R-0
TEC7
TEC6
TEC5
TEC4
TEC3
TEC2
TEC1
TEC0
bit 7
bit 0
bit 7-0
TEC7:TEC0: Transmit Error Counter bits
Legend:
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
R-0
REC7
REC6
REC5
REC4
REC3
REC2
REC1
REC0
bit 7
bit 0
bit 7-0
REC7:REC0: Receive Error Counter bits
Legend:
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
Input Signal
Sync
Prop
Segment
Phase
Segment 1
Phase
Segment 2
Sample Point
TQ
相關PDF資料
PDF描述
MSP430F412IPMR 16-BIT, FLASH, 8 MHz, RISC MICROCONTROLLER, PQFP64
MB90F548GLSPF 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP100
M3727GM6-XXXSP 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDIP42
M32180F8VFP 32-BIT, FLASH, 64 MHz, RISC MICROCONTROLLER, PQFP240
M34280E1GP 4-BIT, OTPROM, 4 MHz, MICROCONTROLLER, PDSO20
相關代理商/技術參數(shù)
參數(shù)描述
MCP25055 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:CAN I/O EXPANDER FAMILY
MCP25055E/P 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:CAN I/O Expander Family
MCP25055E/SL 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:CAN I/O Expander Family
MCP25055I/P 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:CAN I/O Expander Family
MCP25055-I/P 功能描述:網(wǎng)絡控制器與處理器 IC Mixed signal 1 Wire 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