
AD9974
Rev. A | Page 49 of 52
Address
Data Bit
Content
Default
Value
Update
Name
Description
0x02
[12:0]
X
VD
SCP4
Sequence Change Position 4.
[25:13]
X
SCP5
Sequence Change Position 5.
[27:26]
X
Unused
Set unused bits to 0.
0x03
[12:0]
X
VD
SCP6
Sequence Change Position 6.
[25:13]
X
SCP7
Sequence Change Position 7.
[27:26]
X
Unused
Set unused bits to 0.
0x04
[12:0]
X
VD
SCP8
Sequence Change Position 8.
[27:13]
Unused
Set unused bits to 0.
0x05
[4:0]
X
VD
HPAT_SEL0
Selected H-Pattern for First Region in Field.
[9:5]
X
HPAT_SEL1
Selected H-Pattern for Second Region in Field.
[14:10]
X
HPAT_SEL2
Selected H-Pattern for Third Region in Field.
[19:15]
X
HPAT_SEL3
Selected H-Pattern for Fourth Region in Field.
[24:20]
X
HPAT_SEL4
Selected H-pattern for fifth region in field.
[27:25]
X
Unused
Set unused bits to 0.
0x06
[4:0]
X
VD
HPAT_SEL5
Selected H-Pattern for Sixth Region in Field.
[9:5]
X
HPAT_SEL6
Selected H-Pattern for Seventh Region in Field.
[14:10]
X
HPAT_SEL7
Selected H-Pattern for Eighth Region in Field.
[19:15]
X
HPAT_SEL8
Selected H-Pattern for Ninth Region in Field.
[27:20]
X
Unused
Set unused bits to 0.
0x07
[27:0]
X
VD
Unused
Set unused bits to 0.
0x08
[8:0]
X
VD
CLPOB_POL
CLPOB Start Polarity Settings.
[17:9]
X
CLPOB_PAT
CLPOB Pattern Selector.
0 = CLPOB0_TOG registers are used.
1 = CLPOB1_TOG registers are used.
[27:18]
X
Unused
Set unused bits to 0.
0x09
[12:0]
X
VD
CLPOBMASKSTART1
CLPOB Mask 1 Start Position.
[25:13]
X
CLOBMASKEND1
CLPOB Mask 1 End Position.
[27:26]
Unused
Set unused bits to 0.
0xA
[12:0]
X
VD
CLPOBMASKSTART2
CLPOB Mask 2 Start Position.
[25:13]
X
CLOBMASKEND2
CLPOB Mask 2 End Position.
[27:26]
X
Unused
Set unused bits to 0.
0xB
[12:0]
X
VD
CLPOBMASKSTART3
CLPOB Mask 3 Start Position.
[25:13]
X
CLOBMASKEND3
CLPOB Mask 3 End Position.
[27:26]
X
Unused
Set unused bits to 0.
0xC
[8:0]
X
VD
PBLK_POL
PBLK Start Polarity Settings for Sequence 0 to Sequence 8.
[17:9]
X
PBLK_PAT
PBLK Pattern Selector.
0 = PBLK0_TOG registers are used.
1 = PBLK1_TOG registers are used.
[27:18]
X
Unused
Set unused bits to 0
0xD
[12:0]
X
VD
PBLKMASKSTART1
PBLK Mask Region 1 Start Position.
[25:13]
X
PBLKMASKEND1
PBLK Mask Region 1 End Position.
[27:26]
X
Unused
Set unused bits to 0.
0xE
[12:0]
X
VD
PBLKMASKSTART2
PBLK Mask Region 2 Start Position.
[25:13]
X
PBLKMASKEND2
PBLK Mask Region 2 End Position.
[27:26]
X
Unused
Set unused bits to 0.
0xF
[12:0]
X
VD
PBLKMASKSTART3
PBLK Mask Region 3 Start Position.
[25:13]
X
PBLKMASKEND3
PBLK Mask Region 3 End Position.
[27:26]
X
Unused
Set unused bits to 0.