 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
AD73360ARZ-REEL7 Datasheet(PDF) 30 Page - Analog Devices |
|
||||||||||||||||||||||||||||||
AD73360ARZ-REEL7 Datasheet(HTML) 30 Page - Analog Devices |
|
|
30 / 36 page  REV. B AD73360 –29– APPENDIX B Programming a Single AD73360 for Mixed Mode Operation This section describes a typical sequence in programming a single AD73360 to operate in Mixed Mode. The device is con- figured in Nonframe Sync Loop-Back (see Figure 14), which allows the DSP’s Tx Register to determine how many words are sent to the device during one sample interval. In Nonframe Sync Loop-Back mode care must be taken when writing to the AD73360 that an ADC result or register read result contained in the device’s serial register is not corrupted by a write. The best way to avoid this is to only write control words when the AD73360 has no more data to send. This can limit the number of times a DSP can write to the AD73360 and is dependant on the SCLK speed and the number of channels powered up. In this example it is assumed that there are only two channels powered up and that there is adequate time to transmit data after the ADC results have been read. In Step 1, the device has just been reset and the on first output event the AD73360 presents an invalid ADC sample word 1. Once this word has been received the DSP can begin transmit- ting programming information to the AD73360. The first con- trol word sets the sampling rate at 8 kHz. In Step 2, the DSP instructs the AD73360 to power up channels 1 and 2 and sets the gain of each. No data is read from the AD73360 at this point. Steps 3 and 4 set the reference and places the part into Mixed Mode. In Steps 5 and 6 valid ADC results are read from the AD73360 and in Step 7 the DSP sends an instruction to the AD73360 to change the gain of Channel 1. NOTE 1This sequence assumes that the DSP SPORT’s Rx and Tx interrupts are enabled. It is important to ensure there is no latency (separation) between control words in a cascade configuration. This is especially the case when programming Control Register B, as it contains settings for SCLK and DMCLK rates. DSP Tx REG CONTROL WORD 1000 0001 0000 0011 DEVICE 1 ADC WORD 1* 0000 0000 0000 0000 DSP Rx REG 0000 0000 0000 0000 STEP 1 DON'T CARE DSP Tx REG CONTROL WORD 1000 0011 1111 1010 DEVICE 1 ADC WORD 1* 1011 1001 0000 0011 DSP Rx REG 0000 0000 0000 0000 STEP 2 DON'T CARE DSP Tx REG CONTROL WORD 1000 0010 1110 0000 DEVICE 1 ADC WORD 1* 1011 1011 1111 1010 DSP Rx REG 0000 0000 0000 0000 STEP 3 DON'T CARE DSP Tx REG CONTROL WORD 1000 0000 0000 0010 DEVICE 1 ADC WORD 1* 1011 1010 1110 0000 DSP Rx REG 0000 0000 0000 0000 STEP 4 DON'T CARE DSP Tx REG CONTROL WORD 0111 1111 1111 1111 DEVICE 1 ADC WORD 1 1000 0000 0000 0000 DSP Rx REG 1000 0000 0000 0000 STEP 5 ADC WORD 1 DSP Tx REG CONTROL WORD 0111 1111 1111 1111 DEVICE 1 ADC WORD 2 1111 0000 0000 0000 DSP Rx REG 1111 0000 0000 0000 STEP 6 ADC WORD 2 DSP Tx REG CONTROL WORD 1000 0011 1000 0010 DEVICE 1 INVALID DATA xxxx xxxx xxxx xxxx DSP Rx REG 1111 0000 0000 0000 STEP 7 ADC WORD 2 SET 8kHz SAMPLING POWER UP CHANNEL 1&2 AND SET GAINS POWER UP REFERENCE SET MIXED MODE CHANGE GAIN ON CHANNEL 1 RECEIVE VALID ADC DATA RECEIVE VALID ADC DATA *ADC DATA RECEIVED BY THE DSP DURING THE PROGRAMMING PHASE SHOULD NOT BE CONSIDERED VALID RESULTS Figure 33. Programming a Single AD73360 for Operation in Mixed Mode |
Similar Part No. - AD73360ARZ-REEL7 |
|
Similar Description - AD73360ARZ-REEL7 |
|
|
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
