 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
COP8FG Datasheet(PDF) 25 Page - National Semiconductor (TI) |
|
|
|
|||||||||||||||||||||||||||||
COP8FG Datasheet(HTML) 25 Page - National Semiconductor (TI) |
|
|
25 / 59 page  8.0 USART Each device contains a full-duplex software programmable USART. The USART ( Figure 22) consists of a transmit shift register, a receive shift register and seven addressable reg- isters, as follows: a transmit buffer register (TBUF), a re- ceiver buffer register (RBUF), a USART control and status register (ENU), a USART receive control and status register (ENUR), a USART interrupt and clock source register (ENUI), a prescaler select register (PSR) and baud (BAUD) register. The ENU register contains flags for transmit and re- ceive functions; this register also determines the length of the data frame (7, 8 or 9 bits), the value of the ninth bit in transmission, and parity selection bits. The ENUR register flags framing, data overrun and parity errors while the US- ART is receiving. Other functions of the ENUR register include saving the ninth bit received in the data frame, enabling or disabling the USART’s attention mode of operation and providing addi- tional receiver/transmitter status information via RCVG and XMTG bits. The determination of an internal or external clock source is done by the ENUI register, as well as selecting the number of stop bits and enabling or disabling transmit and receive interrupts. A control flag in this register can also se- lect the USART mode of operation: asynchronous or synchronous. DS101116-39 FIGURE 22. USART Block Diagram www.national.com 25 |
|
Link URL |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link to Datasheet | 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
