Datasheet
AD9974
Rev. A | Page 34 of 52
Example Register Settings for Power-Up
The following settings can be used for basic operation. A single CLPOB pulse is used with only H-pattern and one field. Additional
HPATS and FIELDS can be added, as needed, along with different CLPOB toggle positions.
010 0000001 //software reset
028 0000001 //total number of H-Pattern groups = 1
800 0064000 //HPAT0 HBLKTOGO1, TOGO2 settings
801 3ffffff //unused HBLK odd toggles set to zero or max value
802 3ffffff //unused HBLK odd toggles set to zero or max value
803 0064000 //HPAT0 HBLKTOGE1, TOGE2 settings
804 3ffffff //unused HBLK Even toggles set to zero or max value
805 3ffffff //unused HBLK Even toggles set to zero or max value
806 0000000 //HBLK StartA, B are not used
807 0000000 //HBLK StartC is not used
808 0000000 //HBLK alternation patterns are not used
809 0000000 //HBLKLEN, HBLKREP not used, HBLK masking pol = 0
80a 0000000 //HBLKSTART, end not used
80b 0000000 //test, set to zero
80c 00dc05a //CLPOB pat 0 toggles
80d 3ffffff //CLPOB pat 1 toggles not used, set to max
80e 3ffffff //PBLK pat 0 toggles not used, set to max
80f 3ffffff //PBLK pat 1 toggles not used, set to max
810 1000000 //FIELD0 SCP0, SCP1
811 1000800 //SCP2, SCP3 set same as SCP1
812 1000800 //SCP4, SCP5 set same as SCP1
813 1000800 //SCP6, SCP7 set same as SCP1
814 0000800 //SCP8 set same as SCP1
815 0000000 //select HPAT0 for all regions
816 0000000 //select HPAT0 for all regions
817 0000000 //test, set to zero
818 0000001 //CLPOB start polarity = HIGH
819 1000800 //CLPOB masking set to highest SCP value (no mask)
81a 1000800 //CLPOB masking set to highest SCP value (no mask)
81b 1000800 //CLPOB masking set to highest SCP value (no mask)
81c 0000001 //PBLK start polarity = HIGH
81d 1000800 //PBLK masking set to highest SCP value (no mask)
81e 0000000 //PBLK masking set to highest SCP value (no mask)
81f 0000000 //PBLK masking set to highest SCP value (no mask)
02a 0000001 //total number of fields = 1
02b 0000000 //field select = FIELD0
02c 0000000 //field select = FIELD0
000 0000008 //AFE settings
014 0000001 //reset TGCORE
011 0000001 //enable outputs