Datasheet

AD9974
Rev. A | Page 48 of 52
Address
Data Bit
Content
Default
Value Update Name Description
0x05 [12:0] X SCP HBLKTOGE5 Fifth HBLK Toggle Position for Even Lines, or RA4H2REPA/B/C.
[25:13] X HBLKTOGE6 Sixth HBLK Toggle Position for Even Lines, or RA5H2REPA/B/C.
[27:26] X Unused Set unused bits to 0.
0x06 [12:0] X SCP HBLKSTARTA HBLK Repeat Area Start Position A. Used during HBLK Mode 2.
[25:13] X HBLKSTARTB HBLK Repeat Area Start Position B. Used during HBLK Mode 2.
[27:26] X Unused Set unused bits to 0.
0x07 [12:0] X SCP HBLKSTARTC HBLK Repeat Area Start Position C. Used during HBLK Mode 2.
[27:13] X Unused Set unused bits to 0.
0x08 [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 HBLK_MODE 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] X Unused Set unused bits to 0.
0x09 [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] X Unused Set unused bits to 0.
0xA [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] X Unused Set unused bits to 0.
0xB [27:0] X SCP TESTMODE Test Operation Only. Set to 0.
0xC [12:0] X SCP CLPOB0_TOG1 CLPOB0 Toggle Position 1.
[25:13] X CLPOB0_TOG2 CLPOB0 Toggle Position 2.
[27:26] X Unused Set unused bits to 0.
0xD [12:0] X SCP CLPOB1_TOG1 CLPOB1 Toggle Position 1.
[25:13] X CLPOB1_TOG2 CLPOB1 Toggle Position 2.
[27:26] X Unused Set unused bits to 0.
0xE [12:0] X SCP PBLK0_TOG1 PBLK0 Toggle Position 1.
[25:13] X PBLK0_TOG2 PBLK0 Toggle Position 2.
[27:26] X Unused Set unused bits to 0.
0xF [12:0] X SCP PBLK1_TOG1 PBLK1 Toggle Position 1.
[25:13] X PBLK1_TOG2 PBLK1 Toggle Position 2.
[27:26] X Unused Set unused bits to 0.
Table 31. Field Registers
Address
Data Bit
Content
Default
Value Update Name Description
0x00 [12:0] X VD SCP0 Sequence Change Position 0.
[25:13] X SCP1 Sequence Change Position 1.
[27:26] X Unused Set unused bits to 0.
0x01 [12:0] X VD SCP2 Sequence Change Position 2.
[25:13] X SCP3 Sequence Change Position 3.
[27:26] X Unused Set unused bits to 0.