- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄358627 > 33742S (Motorola, Inc.) System Basis Chip (SBC) with Enhanced High-Speed CAN Transceiver PDF資料下載
參數(shù)資料
| 型號： | 33742S |
| 廠商： | Motorola, Inc. |
| 元件分類： | CAN |
| 英文描述： | System Basis Chip (SBC) with Enhanced High-Speed CAN Transceiver |
| 中文描述： | 系統(tǒng)基礎(chǔ)芯片的增強(qiáng)型（SBC）的高速CAN收發(fā)器 |
| 文件頁數(shù)： | 36/52頁 |
| 文件大?。?/td> | 1087K |
| 代理商： | 33742S |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁當(dāng)前第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁
33742
36
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
is activated in order to allow recovery conditions. The driver
stays disabled until the failure is cleared (RXD no longer
permanent recessive) and the bus driver is activated by an SPI
register command (write 1 to the CANCLR bit in the CAN
register).
Figure 23. RXD Recovery Conditions
TXD Permanent Dominant Failure
Principle
In the event TXD is set to a permanent low level, the CAN
bus is set into dominant level, and no communication is
possible. The 33742 has a TXD permanent timeout detector.
After timeout, the bus driver is disabled and the bus is released
in a recessive state. The TXD permanent dominant failure is
reported in the TIM1 register.
Recovery
The TXD permanent dominant is used and activated also in
case of TXD short to RXD. The recovery condition for TXD
permanent dominant (recovery means the reactivation of the
CAN drivers) is done by an SPI command and is controlled by
the MCU.
The driver stays disabled until the failure is cleared (TXD no
longer permanent dominant) and the bus driver is activated by
an SPI register command (write 1 to bit CANCLR in the CAN
register).
TXD to RXD Short Circuit Failure
Principle
In the event TXD is shorted to RXD when an incoming CAN
message is received, RXD is set LOW. Consequently, the TXD
terminal is LOW and drives CANH and CANL into the dominant
state. The bus is stuck in dominant and no further
communication is possible.
Detection and Recovery
The TXD permanent dominant timeout will be activated and
release the CANL and CANH drivers. However, at the next
incoming dominant bit, the bus will then be stuck again in
dominant. In order to avoid this situation, the recovery of the
failure (recovery means the reactivation of the CAN drivers) is
done by an SPI command and controlled by the MCU.
Internal Error Output Flags
There are internal error flags to signal whenever thermal
protection is activated or overcurrent detection occurs on the
CANL or CANH terminals (bit THERM-CUR). The errors are
reported in the CAN register.
CANL
CANH
Diff Output
RXD Output
RXD Short to V
DD
RXD Flag
RXD Flag Latched
Sampling
Sampling
Note
RXD Flag is neither the RXPR bit in the LPC register
nor the CAN-F bit in INTR register.
RXD no longer shorted to V
DD
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 33793 | Distributed System Interface (DSI) Sensor Interface |
| 33887 | 5.0 A H-Bridge with Load Current Feedback |
| 33888 | Quad High-Side and Octal Low-Side Switch for Automotive |
| 33888A | Quad High-Side and Octal Low-Side Switch for Automotive |
| 338FP-M | Versatile Miniature Switch, High Performance |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 33-7435 | 制造商:Distributed By MCM 功能描述:High Performance LNB |
| 337439-000 | 制造商:TE Connectivity 功能描述:55/0314-26-9CS2793 - Cable Rools/Shrink Tubing |
| 337445 | 制造商:Whirlpool 功能描述:SUPPORT |
| 33-745 | 制造商:MCM 功能描述:DETACHED FERRULE F TYPE CONNECTORS, CABLE TYPE: RG-6, PLATING: NICKEL, USED FOR: ANTENNA AND CABLE TV APPLICATIONS, FOR USE WITH: HEX CRIMP TOOL 22-100, QUANTITY: MINIMUM TEN |
| 3-374595-0 | 功能描述:手工工具 INDENTOR RoHS:否 制造商:Molex 產(chǎn)品:Extraction Tools 類型: 描述/功能:Extraction tool |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。