 |
поискавой системы для электроныых деталей |
|
|
поискавой системы для электроныых деталей |
|
70353C датащи(PDF) 5 Page - Microchip Technology |
|
|
|||||||||||||||||||||||||||||
70353C датащи(HTML) 5 Page - Microchip Technology |
|
|
5 / 76 page  © 2008-2011 Microchip Technology Inc. DS70353C-page 21-5 Section 21. Enhanced Controller Area Network (ECAN™) 21 The Acknowledgement (ACK) field is sent as a recessive bit (logic level ‘1’), and is overwritten as a dominant bit by any receiver that has received the data correctly. The message is acknowledged by the receiver regardless of the result of the acceptance filter comparison. The last field is the EOF field, which consists of seven recessive bits that indicate the end of message. Figure 21-4: Format of the Standard Data Frame 21.2.2 Extended Data Frame The extended data frame begins with an SOF bit followed by a 31-bit Arbitration field as illustrated in Figure 21-5. The Arbitration field in an extended data frame contains 29-bit identifier in two fields separated by a Substitute Remote Request bit (SRR) and an IDE bit. The SRR bit determines if the message is a remote frame (SRR = 1 for extended data frames). The IDE bit indicates the data frame type. For the extended data frame, IDE = 1. The extended data frame Control field consists of seven bits. The first bit is the RTR. For the extended data frame, RTR = 0. The next two bits, RB1, and RB0, are reserved bits that are in the dominant state (logic level ‘0’). The last four bits in the Control field are the DLC, which specifies the number of data bytes present in the message. The remaining fields in an extended data frame are identical to a standard data frame. Figure 21-5: Format of the Extended Data Frame SID10 SID1 S O F IDENTIFIER 11 Bits R T R I D E RB0 DLC 4 Bits DATA 8 Bytes CRC 16 Bits ACK 2 Bits EOF 7 Bits IFS 3 Bits SID0 9/19/2006 - 9/26/2006 11-bit Identifier Interframe Space 9/19/2006 - 9/26/2006 9/19/2006 - 9/26/2006 Data 9/19/2006 - 9/26/2006 9/19/2006 - 9/26/2006 9 - 9/26/2006 Frame Interframe Space 9/19/2006 - 9/26/2006 IDE is Dominant (Logical ‘0’) RTR is Dominant (Logical ‘0’) RB0 is Dominant (Logical ‘0’) /19/ Arbitration Field Control Field Field CRC Field ACK Field End-of- SID10 SID1 S O F IDENTIFIER 11 Bits S R R I D E R T R DLC 4 Bits CRC 16 Bits ACK 2 Bits EOF 7 Bits IFS 3 Bits SID0 Field 29-bit Identifier 9/19/2006 - 9/26/2006 Control 9/19/2006 - 9/26/2006 CRC 9/19/2006 - 9/26/2006 IDENTIFIER 18 Bits EID17 EID1 EID0 R B 1 R B 0 IDE is Recessive (Logical ‘1’) SRR is Dominant (Logical ‘1’) RTR is Dominant (Logical ‘0’) RB0 is Dominant (Logical ‘0’) RB1 is Dominant (Logical ‘0’) 9/19/2006 - 9/26/2006 ACK End-of- Frame 9/19/2006 - 9/26/2006 9/19/2006 - 9/26/2006 Data DATA 8 Bytes Arbitration Field Field Field Field |
|
ссылки URL |
| Вашему бизинису помогли Аллдатащит? [ DONATE ] |
Что такое Аллдатащит | реклама | контакт | Конфиденциальность | Ссылка на техническое описание | обмен ссыками | поиск по производителю All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Russian ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
