参数资料
型号: MCP25020T-I/SL
厂商: Microchip Technology
文件页数: 17/66页
文件大小: 0K
描述: IC I/O EXPANDER CAN 8B 14SOIC
标准包装: 2,600
接口: CAN
输入/输出数: 8
中断输出:
频率 - 时钟: 4MHz
电源电压: 2.7 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 14-SOIC(0.154",3.90mm 宽)
供应商设备封装: 14-SOIC
包装: 带卷 (TR)
包括: 存储器,PWM
配用: MCP2515DM-PCTL-ND - BOARD DEMO FOR MCP2515
其它名称: MCP25020TI/SL
MCP2502X/5X
DS21664D-page 24
2007 Microchip Technology Inc.
4.4.3
TRANSMIT MESSAGE PRIORITY
There is a priority for all transmit messages, including
TXIDn and all “Output” messages.
The transmit message priority is as follows:
1.
Output messages have the highest priority.
Prioritization of the individual output message
types is determined by the three bits that
determine message type, with the lowest value
having the highest priority (e.g., Read A/D Regs
is a higher priority than Read Control Regs).
2.
TXID2 (Transmit auto-converted messages) has
the second-highest priority.
3.
TXID1 (Command acknowledge) has the third-
highest priority.
4.
TXID0 (On Bus message) has the lowest
priority.
In the event two or more messages are pending
transmission, transmit-message-prioritization will occur
and the highest message type will be sent first.
Messages that are currently transmitting will not be
prioritized.
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