OPERATIONAL MODES CAN PHYSICAL INTERFACE Th" />
參數(shù)資料
型號： MC33742DW
廠商： Freescale Semiconductor
文件頁數(shù)： 31/71頁
文件大?。?/td> 0K
描述： IC SYSTEM BASE W/LIN 28-SOIC
標準包裝： 26
應用： 自動
接口： SPI
電源電壓： 5.5 V ~ 18 V
封裝/外殼： 28-SOIC（0.295"，7.50mm 寬）
供應商設(shè)備封裝： 28-SOIC W
包裝： 管件
安裝類型： 表面貼裝
配用： KIT33742DWEVB-ND - KIT FOR 33742 SBC WITH EHSCAN
Analog Integrated Circuit Device Data
Freescale Semiconductor
37
33742
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
CAN PHYSICAL INTERFACE
The SBC features a high-speed CAN physical interface for bus communication from 60kbps up to 1.0Mbps. Figure 19 is a
simplified block diagram of the CAN interface of the 33742.
Figure 19. Simplified Block Diagram of CAN Interface
CAN INTERFACE SUPPLY
The supply voltage for the CAN transceiver is the V2 pin. The CAN interface also has a supply path from the external supply
line through the VSUP pin. This path is used in CAN Sleep mode to allow wake-up detection.
During CAN communication (transmission and reception), the CAN interface current is sourced from the V2 pin. During CAN
low power mode, the current is sourced from the VSUP pin.
MAIN OPERATION MODES DESCRIPTION
The CAN interface of the SBC has two main operating modes: TXRX and Sleep mode. The modes are controlled by the CAN
SPI Register. In the TXRX mode, which is used for communication, four different slew rates are available for the user. In the
Sleep mode, the user has the option of enabling or disabling the remote CAN wake-up capability.
CAN DRIVER OPERATION IN TXRX MODE
When the CAN interface is in TXRX mode, the driver has two states: recessive or dominant. The driver state is controlled by
the TXD pin. The bus state is reported through the RXD pin.
When TXD is HIGH, the driver is set in recessive state, and CANH and CANL lines are biased to the voltage set at V2 divided
by 2, or approximately 2.5 V.
When TXD is LOW, the bus is set into dominant state: CANL and CANH drivers are active. CANL is pulled to ground, and
CANH is pulled HIGH toward 5.0 V (voltage at V2).
The RXD pin reports the bus state: CANH minus CANL voltage is compared versus an internal threshold (a few hundred
millivolts). If CANH minus CANL is below the threshold, the bus is recessive and RXD is set HIGH. If CANH minus CANL is above
the threshold, the bus is dominant and RXD is set LOW. This is illustrated in Figure 19.
V2
Bus Termination (60
)
CANH Line
CANL Line
TXD
RXD
Differential
Receiver
Driver
2.5 V
Wake-up
Receiver
Pattern
Recognition
Internal
VSUP
Wake-up
Signal
CANH
CANL
SPI Control
V2
QH
QL
33742
相關(guān)PDF資料
PDF描述
MC33742DWR2 IC SYSTEM BASE W/LIN 28-SOIC
D38999/26KA98PN CONN PLUG 3POS STRAIGHT W/PINS
C8051T602-GS IC 8051 MCU 4K-EEPROM 14-SOIC
MS27484T18A35S CONN PLUG 66POS STRAIGHT W/SCKT
MC33689DWB IC SYSTEM BASE W/LIN 32-SOIC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC33742DWR2 功能描述:網(wǎng)絡(luò)控制器與處理器 IC SBC-E-HS 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
MC33742EP 功能描述:CAN 接口集成電路 SBC_ECAN_HS RoHS:否 制造商:Texas Instruments 類型:Transceivers 工作電源電壓:5 V 電源電流: 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:SOIC-8 封裝:Tube
MC33742EPR2 功能描述:CAN 接口集成電路 SBC_ECAN_HS RoHS:否 制造商:Texas Instruments 類型:Transceivers 工作電源電壓:5 V 電源電流: 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:SOIC-8 封裝:Tube
MC33742PEG 功能描述:CAN 接口集成電路 SBC-E-HS-CAN RoHS:否 制造商:Texas Instruments 類型:Transceivers 工作電源電壓:5 V 電源電流: 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:SOIC-8 封裝:Tube
MC33742PEGR2 功能描述:CAN 接口集成電路 SBC-E-HS-CAN RoHS:否 制造商:Texas Instruments 類型:Transceivers 工作電源電壓:5 V 電源電流: 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:SOIC-8 封裝:Tube
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*