 |
Zakładka z wyszukiwarką danych komponentów |
|
|
Zakładka z wyszukiwarką danych komponentów |
|
AD7147A Arkusz danych(PDF) 39 Page - Analog Devices |
|
||||||||||||||||||||||||||||||
AD7147A Arkusz danych(HTML) 39 Page - Analog Devices |
|
|
39 / 69 page  AD7147A Rev. B | Page 38 of 68 POWER-UP SEQUENCE To power up the AD7147A, use the following sequence when initially developing the AD7147A and microprocessor serial interface: 1. Turn on the power supplies to the AD7147A. 2. Write to the Bank 2 registers at Address 0x080 through Address 0x0DF. These registers are contiguous; therefore, a sequential register write sequence can be applied. Note that the Bank 2 register values are unique for each application. Register values come from characterization of the sensor in the application. The characterization process is outlined in the AN-929 Application Note, available from Analog Devices. 3. Write to the Bank 1 registers at Address 0x000 through Address 0x007, outlined as follows. These registers are contiguous; therefore, a sequential register write sequence can be applied (see Figure 49 and Figure 54). Caution: At this time, Address 0x001 must remain set to a default value of 0x0000 during this contiguous write operation. Register values: Address 0x000 = 0x82B2 Address 0x001 = 0x000 Address 0x002 = 0x3230 (depends on number of conversion stages used) Address 0x003 = 0x419 Address 0x004 = 832 Address 0x005 = interrupt enable register (depends on required interrupt behavior) Address 0x006 = interrupt enable register (depends on required interrupt behavior) Address 0x007 = interrupt enable register (depends on required interrupt behavior) 4. Write to the Bank 1 register, Address 0x001 = 0x0FFF (depends on number of conversion stages used). 5. Read back the corresponding interrupt status register at Address 0x008, Address 0x009, or Address 0x00A. This is determined by the interrupt output configuration, as explained in the Interrupt Output section. Note that the specific registers required to be read back depend on each application. For buttons, the interrupt status registers are read back while other sensors read data back from the AD7147A according to the slider or wheel algorithm requirements. Analog Devices can provide this information after the user develops the sensor board. 6. Repeat Step 5 every time INT is asserted. FIRST CONVERSION SEQUENCE CONVERSION STAGE 0 CONVERSION STAGES DISABLED 1 2 3 4 5 678 9 10 11 0 1 2 9 10 11 012 910 11 0 1 SECOND CONVERSION SEQUENCE THIRD CONVERSION SEQUENCE POWER HOST SERIAL INTERFACE AD7147A INT Figure 58. Recommended Start-Up Sequence |
Podobny numer części - AD7147A |
|
Podobny opis - AD7147A |
|
|
Link URL |
| Polityka prywatności |
| ALLDATASHEET.PL |
| Czy Alldatasheet okazała się pomocna? [ DONATE ] |
O Alldatasheet | Reklama | Kontakt | Polityka prywatności | Linki | Lista producentów 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 |
Polish ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
