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T W R - 9 S 1 2 G 1 2 8
J U N E
2 ,
2 0 1 0
U S E R G U I D E
NOTE: CAN Port Connector – Molex 39-30-3045
Mates with; Housing – Molex 39-01-4040, Pin – Molex 39-00-0217
CAN Termination Enable
CAN bus termination of 120 ohm with virtual ground is applied to the differential CAN signals
on both channels. The SPLIT output from each PHY is connected to the virtual ground
providing common-mode stabilization. The differential CAN bus signal termination may be
removed using option header JP13 or JP15. To prevent signal corruption, both option jumpers
must be installed or both option jumpers must be removed. The CAN bus should not be
operated with only 1 signal termination applied. Figure 11 below details the option header
shunt positions.
Figure 11: CAN Termination Enable
●
●
Enables CANL termination
1
●
● 2
Enables CANH termination
JP6
Standby Mode
The CAN PHY is configured for normal mode by default. To enable standby (STB) mode,
apply a high logic level at test point TP1. Refer to the TJA1040T Reference Manual for use
and capabilities of the Standby Mode.
USER PERIPHERALS
User I/O includes 1 potentiometer, 4 push button switches, and 4 green LEDs for user I/O.
The USER (JP14) option header enables or disables each User I/O function individually. The
sections below provide details on user I/O. Figure 12 below shows the USER jumper settings.
Potentiometer
The TWR-S12G128 target board applies a single-turn, 5K, ohm potentiometer (POT) to
simulate analog input. The POT is connected to an ATD input on the target MCU and is
decoupled to minimize noise transients during adjustment. Figure 12 below shows the USER
jumper settings.
14
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相关代理商/技术参数
TWR-S12G128 制造商:Freescale Semiconductor 功能描述:TOWER CD S12G128
TWR-S12G128-KIT 功能描述:开发板和工具包 - S08 / S12 TOWER KIT S12G128 RoHS:否 产品:Development Kits 工具用于评估:MC9S12G128 核心:S12 接口类型:CAN, LIN, RS-232, USB 工作电源电压:5 V 制造商:Freescale Semiconductor
TWR-S12G240 功能描述:TOWER SYSTEM MODULE S12G240 RoHS:是 类别:编程器，开发系统 >> 通用嵌入式开发板和套件（MCU、DSP、FPGA、CPLD等） 系列:S12 标准包装:1 系列:PICDEM™ 类型:MCU 适用于相关产品:PIC10F206，PIC16F690，PIC16F819 所含物品:板，线缆，元件，CD，PICkit 编程器 产品目录页面:659 (CN2011-ZH PDF)
TWR-S12G240-KIT 制造商:Freescale Semiconductor 功能描述:TOWER KIT S12G240 - Boxed Product (Development Kits)
TWR-S12G64 功能描述:开发板和工具包 - 其他处理器 S12G64 Tower Board RoHS:否 制造商:Freescale Semiconductor 产品:Development Systems 工具用于评估:P3041 核心:e500mc 接口类型:I2C, SPI, USB 工作电源电压:
TWR-S12G64-KIT 制造商:Freescale Semiconductor 功能描述:S12G64 TOWER KIT - Boxed Product (Development Kits)
TWR-S12GN32 功能描述:开发板和工具包 - 其他处理器 TOWER BOARD GUPPY RoHS:否 制造商:Freescale Semiconductor 产品:Development Systems 工具用于评估:P3041 核心:e500mc 接口类型:I2C, SPI, USB 工作电源电压:
TWR-S12GN32-KIT 功能描述:开发板和工具包 - S08 / S12 TOWARD KIT GUPPY RoHS:否 产品:Development Kits 工具用于评估:MC9S12G128 核心:S12 接口类型:CAN, LIN, RS-232, USB 工作电源电压:5 V 制造商:Freescale Semiconductor