Datasheet

AD9979
Rev. C | Page 52 of 56
Address
Data Bit
Content
Default
Value
1
Update
Type Name Description
08 [2:0] X SCP HBLKALT_PAT1 HBLK Pattern 1 order. Used during pixel mixing mode.
[5:3] X HBLKALT_PAT2 HBLK Pattern 2 order. Used during pixel mixing mode.
[8:6] X HBLKALT_PAT3 HBLK Pattern 3 order. Used during pixel mixing mode.
[11:9] X HBLKALT_PAT4 HBLK Pattern 4 order. Used during pixel mixing mode.
[14:12] X HBLKALT_PAT5 HBLK Pattern 5 order. Used during pixel mixing mode.
[17:15] X HBLKALT_PAT6 HBLK Pattern 6 order. Used during pixel mixing mode.
[19:18] X HBLKMODE HBLK mode selection.
0 = normal HBLK.
1 = pixel mixing mode.
2 = special pixel mixing mode.
3 = not used.
[20] X TESTMODE Test operation only. Set to 0.
[27:21] Unused Set unused bits to 0.
09 [12:0] X SCP HBLKLEN HBLK length in HBLK alteration modes.
[20:13] X HBLKREP Number of HBLK repetitions in HBLK alternation modes.
[21] X HBLKMASK_H1 Masking polarity for H1/H3 during HBLK.
[22] X HBLKMASK_H2 Masking polarity for H2/H4 during HBLK.
[27:23] Unused Set unused bits to 0.
0A [12:0] X SCP HBLKSTART HBLK start position used in pixel mixing modes.
[25:13] X HBLKEND HBLK end position used in pixel mixing modes.
[27:26] Unused Set unused bits to 0.
0B [27:0] X TESTMODE Test operation only. Set to 0.
0C [12:0] X SCP CLPOB0_TOG1 CLPOB0 Toggle Position 1.
[25:13] X CLPOB0_TOG2 CLPOB0 Toggle Position 2.
[27:26] Unused Set unused bits to 0.
0D [12:0] X SCP CLPOB1_TOG1 CLPOB1 Toggle Position 1.
[25:13] X CLPOB1_TOG2 CLPOB1 Toggle Position 2.
[27:26] Unused Set unused bits to 0.
0E [12:0] X SCP PBLK0_TOG1 PBLK0 Toggle Position 1.
[25:13] X PBLK0_TOG2 PBLK0 Toggle Position 2.
[27:26] Unused Set unused bits to 0.
0F [12:0] X SCP PBLK1_TOG1 PBLK1 Toggle Position 1.
[25:13] X PBLK1_TOG2 PBLK1 Toggle Position 2.
[27:26] Unused Set unused bits to 0.
1
X = Don’t care.
Table 34. Field Registers
Address
Data Bit
Content
Default
Value
1
Update
Type
Name Description
00 [12:0] X VD SCP0 Sequence Change Position 0.
[25:13] X SCP1 Sequence Change Position 1.
[27:26] Unused Set unused bits to 0.
01 [12:0] X VD SCP2 Sequence Change Position 2.
[25:13] X SCP3 Sequence Change Position 3.
[27:26] Unused Set unused bits to 0.
02 [12:0] X VD SCP4 Sequence Change Position 4.
[25:13] X SCP5 Sequence Change Position 5.
[27:26] Unused Set unused bits to 0.
03 [12:0] X VD SCP6 Sequence Change Position 6.
[25:13] X SCP7 Sequence Change Position 7.
[27:26] Unused Set unused bits to 0.