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MAX17841BGUEV 数据表(PDF) 20 Page - Maxim Integrated Products |
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MAX17841BGUEV 数据表(HTML) 20 Page - Maxim Integrated Products |
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20 / 33 page ![]() Table 10. UART Daisy-Chain Initialization Sequence (continued) DIN DOUT DESCRIPTION TRANSACTION 7 Waitfornullmessagetobereceived(pollRX_Empty_Statusbit) 01h xxh ReadRX_Statusregister TRANSACTION 8 Cleartransmitbuffer 20h xxh Cleartransmitbuffer TRANSACTION 9 Clearreceivebuffer E0h xxh Clearreceivebuffer TRANSACTION 10 LoadtheHELLOALLcommandsequenceintotheloadqueue C0h xxh WR_LD_QSPIcommandbyte(writetheloadqueue) 03h xxh Message length 57h xxh HELLOALLcommandbyte 00h xxh Register address (0x00) 00h xxh InitializationaddressofHELLOALL TRANSACTION 11 Verifycontentsoftheloadqueue C1h xxh RD_LD_QSPIcommandbyte xxh 03h OK xxh 57h OK xxh 00h OK xxh 00h OK TRANSACTION 12 TransmitHELLOALLsequence B0h xxh WR_NXT_LD_QSPIcommandbyte(writethenextloadqueue) TRANSACTION 13 PollRX_Stop_Statusbit 01h xxh ReadRX_Statusregister xxh 12h IfRX_Status[1]istrue,continue.Iffalse,thenrepeattransactionuntiltrue. TRANSACTION 14 Servicereceivebuffer.ReadtheHELLOALLmessagethatpropagatedthroughthedaisy-chainandwas returned back to the ASCI. The host should verify the device count. 93h xxh RD_NXT_MSGSPItransaction xxh 57h Sentcommandbyte(HELLOALL) xxh 00h Sent address = 00h xxh 02h Returned address = 02h TRANSACTION 15 Checkforreceivebuffererrors 09h xxh ReadRX_Interrupt_Flagsregister xxh 00h Ifnoerrors,continue.Otherwise,clearandgotoerrorroutine. Maxim Integrated │ 20 MAX17841B Automotive SPI Communication Interface (ASCI) www.maximintegrated.com |
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