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RM0319 Datasheet(PDF) 206 Page - STMicroelectronics

Part # RM0319
Description  SPEAr320S architecture and functionality
PDF  368 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

RM0319 Datasheet(HTML) 206 Page - STMicroelectronics

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Controller area network ports (CAN)
RM0319
206/368
Doc ID 022640 Rev 3
Figure 73.
CPU handling of a FIFO buffer
START
Read IFx Message Control
Read Interrupt Pointer
MessageNum = Interrupt Pointer
END
Status Change
Interrupt Handling
Case Interrput Pointer
else
Write MessageNum to IFx Command Request
(Read Message to IFx Registers,
Reset NewDat = 0, Reset IntPnd =0)
Read Data From IFx Data A,B
MessageNum = MessageNum + 1
0x0000h
0x8000h
NewDat =1
EoB =1
Message Interrupt
No
Yes
Yes
No



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