 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
UT1553BRTIGPX Datasheet(PDF) 7 Page - List of Unclassifed Manufacturers |
|
||||||||||||||||||||||||||||||
UT1553BRTIGPX Datasheet(HTML) 7 Page - List of Unclassifed Manufacturers |
|
|
7 / 52 page  RTI-7 Last Command Register (Read Only) The 16-bit read-only Last Command Register provides the host with last command and operational status information. The RTI transmits the lower 11 bits of this register along with terminal address upon receipt of a Transmit Last Command mode code. Read the Last Command Register by applying a logic zero to CS, CTRL, and a logic one to RD/WR and ADDR IN (0). The 16-bit contents of the Last Command Register are read from data I/O pins DATA(15:0). 1.3 Mode Codes and Subaddresses The UT1553B RTI provides subaddress and mode code decoding meeting MIL-STD-1553B. In addition, the device has automatic internal illegal command decoding for reserved MIL-STD-1553B mode codes. Upon command word validation and decode, status pins MCSA(4:0) and MC/SA become valid. Status pin MC/SA will indicate whether the data pins MCSA(4:0) are mode code or subaddress information. Status Register bits 5 through 0 contain the same information as pins MCSA(4:0) and MC/ SA. The system designer can use signals MCSA(4:0), MC/SA, BRDCST, XMIT, and RCV to illegalize mode codes, subaddresses, and other message formats via the Illegal Command (ILL COMM) input (see figure 23 on page 36). The RTI will internally decode the following mode codes as illegal: - Dynamic Bus Control - Selected Transmitter Shutdown - Override Selected Transmitter Shutdown - All Reserved Mode Codes If the RTI receives one of the above mode codes, the RTI responds by transmitting a status word with the Message Error bit set to logic one. Mode codes which involve data transfer are processed like receive and transmit commands. The RTI will not generate DMA request for Transmit Status Word and Transmit Last Command mode codes since the information is stored internal to the RTI. The following mode codes require assistance from the host: - Synchronize - Initiate Self-Test - Reset Remote Terminal For example, the RTI will accept and respond to a Reset Remote Terminal mode code; however it will not perform a reset operation. The host must interpret the mode code and take appropriate action. The RTI does not define or interpret the following data words associated with mode code commands: - Transmit Vector Word - Synchronize With Data Word - Transmit Bit Word The RTI will accept and respond to mode code with data; the host must interpret or define the data word. The RTI will store or retrieve the data required for mode code command from block #1 of the receive or transmit page . Bit Number Initial Condition Description 0 through 10 [all 1s] Least significant 11 bits of the last command word. 11 [0] Busy Bit. System Register bit 10. 12 [0] Self-test. System Register bit 11. 13 [1] Terminal Flag Enabled. System Register bit 9. 14 [1] Channel A/B. System Register bit 6. 15 [1] Illegal Command. The RTI illegalized the last command. |
Similar Part No. - UT1553BRTIGPX |
|
Similar Description - UT1553BRTIGPX |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.NET |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List 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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
