поискавой системы для электроныых деталей |
|
ADM1021AARQ-REEL7 датащи(PDF) 9 Page - Analog Devices |
|
ADM1021AARQ-REEL7 датащи(HTML) 9 Page - Analog Devices |
9 / 16 page ADM1021A –9– REV. D R/ W A6 SCLK SDATA A5 A4 A3 A2 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0 ACK. BY ADM1021A START BY MASTER 19 1 9 D7 D6 D5 D4 D3 D2 D1 D0 ACK. BY ADM1021A STOP BY MASTER 1 9 SCL (CONTINUED) SDA (CONTINUED) FRAME 1 SERIAL BUS ADDRESS BYTE FRAME 3 DATA BYTE FRAME 2 ADDRESS POINTER REGISTER BYTE ACK. BY ADM1021A Figure 3. Writing a Register Address to the Address Pointer Register, then Writing Data to the Selected Register R/ W A6 SCLK SDATA A5 A4 A3 A2 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0 ACK. BY ADM1021A STOP BY MASTER START BY MASTER 19 1 ACK. BY ADM1021A 9 FRAME 1 SERIAL BUS ADDRESS BYTE FRAME 2 ADDRESS POINTER REGISTER BYTE Figure 4. Writing to the Address Pointer Register Only R/ W A6 SCLK SDATA A5 A4 A3 A2 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0 NO ACK. BY MASTER STOP BY MASTER START BY MASTER 19 1 ACK. BY ADM1021A 9 FRAME 1 SERIAL BUS ADDRESS BYTE FRAME 2 DATA BYTE FROM ADM1021A Figure 5. Reading Data from a Previously Selected Register 2. Data is sent over the serial bus in sequences of nine clock pulses, eight bits of data followed by an Acknowledge Bit from the slave device. Transitions on the data line must occur during the low period of the clock signal and remain stable during the high period, as a low-to-high transition when the clock is high may be interpreted as a stop signal. The number of data bytes that can be transmitted over the serial bus in a single read or write operation is limited only by what the master and slave devices can handle. 3. When all data bytes have been read or written, stop conditions are established. In write mode, the master will pull the data line high during the 10th clock pulse to assert a stop condition. In read mode, the master device will override the acknowledge bit by pulling the data line high during the low period before the ninth clock pulse. This is known as No Acknowledge. The master will then take the data line low during the low period before the 10th clock pulse, then high during the 10th clock pulse to assert a stop condition. Any number of bytes of data may be transferred over the serial bus in one operation, but it is not possible to mix read and write in one operation, because the type of operation is determined at the beginning and cannot subsequently be changed without starting a new operation. In the case of the ADM1021A, write operations contain either one or two bytes, while read operations contain one byte. To write data to one of the device data registers or read data from it, the Address Pointer Register must be set so that the correct data register is addressed, data can then be written into that register or read from it. The first byte of a write operation always contains a valid address that is stored in the Address Pointer Register. If data is to be written to the device, the write operation contains a second data byte that is written to the reg- ister selected by the address pointer register. |
Аналогичный номер детали - ADM1021AARQ-REEL7 |
|
Аналогичное описание - ADM1021AARQ-REEL7 |
|
|
ссылки URL |
Конфиденциальность |
ALLDATASHEETRU.COM |
Вашему бизинису помогли Аллдатащит? [ DONATE ] |
Что такое Аллдатащит | реклама | контакт | Конфиденциальность | 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 |