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STR720 Datasheet(PDF) 222 Page - STMicroelectronics

No. de pieza STR720
Descripción Electrónicos  ARM720T 16/32-BIT MCU WITH 16K RAM, USB, CAN, 3 TIMERS, ADC, 6 COMMUNICATIONS INTERFACES
PDF  401 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STR720 Datasheet(HTML) 222 Page - STMicroelectronics

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STR720 - CONTROLLER AREA NETWORK (CAN)
222/401
Bits 6:0
These bits of IFn Command Mask Register have different functions
depending on the transfer direction:
Direction = Write
Bit 6 = Mask Access Mask Bits
0: Mask bits unchanged.
1: transfer Identifier Mask + MDir + MXtd to Message Object.
Bit 5 = Arb Access Arbitration Bits
0: Arbitration bits unchanged.
1: Transfer Identifier + Dir + Xtd + MsgVal to Message Object.
Bit 4 = Control Access Control Bits
0: Control Bits unchanged.
1: Transfer Control Bits to Message Object.
Bit 3 = ClrIntPnd Clear Interrupt Pending Bit
When writing to a Message Object, this bit is ignored.
Bit 2 = TxRqst/NewDat Access Transmission Request Bit
0: TxRqst bit unchanged.
1: Set TxRqst bit.
If a transmission is requested by programming bit TxRqst/NewDat in the IFn
Command Mask Register, bit TxRqst in the IFn Message Control Register
will be ignored.
Bit 1 = Data A Access Data Bytes 3:0
0: Data Bytes 3:0 unchanged.
1: Transfer Data Bytes 3:0 to Message Object.
Bit 0 = Data B Access Data Bytes 7:4
0: Data Bytes 7:4 unchanged.
1: Transfer Data Bytes 7:4 to Message Object.
1



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