 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
DA14530 Datasheet(PDF) 84 Page - Renesas Technology Corp |
|
|
|||||||||||||||||||||||||||||
DA14530 Datasheet(HTML) 84 Page - Renesas Technology Corp |
|
|
84 / 333 page  DA14530 Low Power Bluetooth 5.1 SoC Final Datasheet Revision 3.4 21-Dec-2021 CFR0011-120-00 84 of 332 © 2021 Renesas Electronics Figure 31: Master-Receiver Protocol START BYTE Transfer Protocol The START BYTE transfer protocol is set up for systems that do not have an on-board dedicated I2C hardware module. When the I2C Controller is addressed as a slave, it always samples the I2C bus at the highest speed supported so that it never requires a START BYTE transfer. However, when I2C Controller is a master, it supports the generation of START BYTE transfers at the beginning of every transfer in case a slave device requires it. This protocol consists of seven zeros followed by a 1 being transmitted (Figure 32). This allows the processor that is polling the bus to under-sample the address phase until 0 is detected. Once the microcontroller detects a 0, it switches from the under-sampling rate to the correct rate of the master. Figure 32: START BYTE Transfer The START BYTE procedure is as follows: 1. Master generates a START condition. 2. Master transmits the START byte (0000 0001). 3. Master transmits the ACK clock pulse. (Present only to conform with the byte handling format used on the bus) 4. No slave sets the ACK signal to 0. 5. Master generates a RESTART (R) condition. A hardware receiver does not respond to the START BYTE because it is a reserved address and gets reset after the RESTART condition is generated. 13.2.4 Multiple Master Arbitration The I2C Controller allows multiple masters to reside on the same bus. There is an arbitration procedure if two masters on the same I2C bus try to control the bus at the same time by generating a START condition simultaneously. Once a master (for example, a microcontroller) has control of the bus, no other master can take control until the first master sends a STOP condition and places the bus in an idle state. |
Similar Part No. - DA14530 |
|
Similar Description - DA14530 |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | 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
