參數(shù)資料
型號(hào): MCP25020-E/SL
廠商: Microchip Technology
文件頁數(shù): 17/66頁
文件大小: 0K
描述: IC I/O EXPANDER CAN 8B 14SOIC
標(biāo)準(zhǔn)包裝: 57
接口: CAN
輸入/輸出數(shù): 8
中斷輸出:
頻率 - 時(shí)鐘: 25MHz
電源電壓: 4.5 V ~ 5.5 V
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 14-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 14-SOIC
包裝: 管件
包括: 存儲(chǔ)器,PWM
配用: MCP2515DM-PCTL-ND - BOARD DEMO FOR MCP2515
其它名稱: MCP25020E/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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