AD9920ABBCZ datasheet(36/112 Pages) AD

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AD9920A

Rev. B | Page 36 of 112

Length

(Bits)

Description

VREPB_ODD

Number of repetitions for the V-pattern Group B for odd lines.

VREPC_ODD

Number of repetitions for the V-pattern Group C for odd lines.

VREPD_ODD

Number of repetitions for the V-pattern Group D for odd lines.

VREPB_EVEN

Number of repetitions for the V-pattern Group B for even lines.

VREPC_EVEN

Number of repetitions for the V-pattern Group C for even lines.

VREPD_EVEN

Number of repetitions for the V-pattern Group D for even lines.

FREEZE1

Pixel location where the V-outputs freeze or hold (see VMASK_EVEN and VMASK_ODD). Also used as

VALTSEL0_EVEN, Bits[12:0] register when special VSEQALT_EN mode is enabled.

FREEZE2

Pixel location where the V-outputs freeze or hold (see VMASK_EVEN and VMASK_ODD). Also used as

VALTSEL1_EVEN, Bits[12:0] register when special VSEQALT_EN mode is enabled.

FREEZE3

Pixel location where the V-outputs freeze or hold (see VMASK_EVEN and VMASK_ODD). Also used as

VALTSEL0_ODD, Bits[12:0] register when special VSEQALT_EN mode is enabled.

FREEZE4

Pixel location where the V-outputs freeze or hold (see VMASK_EVEN and VMASK_ODD). Also used as

VALTSEL1_ODD, Bits[12:0] register when special VSEQALT_EN mode is enabled.

RESUME1

Pixel location where the V-outputs resume operation (see VMASK_EVEN and VMASK_ODD). Also used as

VALTSEL0_EVEN, Bits[17:13] register when special VSEQALT_EN mode is enabled.

RESUME2

Pixel location where the V-outputs resume operation (see VMASK_EVEN and VMASK_ODD). Also used as

VALTSEL1_EVEN, Bits[17:13] register when special VSEQALT_EN mode is enabled.

RESUME3

Pixel location where the V-outputs resume operation (see VMASK_EVEN and VMASK_ODD). Also used as

VALTSEL0_ODD, Bits[17:13] register when special VSEQALT_EN mode is enabled.

RESUME4

Pixel location where the V-outputs resume operation (see VMASK_EVEN and VMASK_ODD). Also used as

VALTSEL1_ODD, Bits[17:13] register when special VSEQALT_EN mode is enabled.

LASTREPLEN_A

Separate length for last repetition of vertical pulses for Group A. Must be enabled using LASTREPLEN_EN.

Should be programmed to a value equal to the VLENA register.

LASTREPLEN_B

Separate length for last repetition of vertical pulses for Group B. Must be enabled using LASTREPLEN_EN.

Should be programmed to a value equal to the VLENB register.

LASTREPLEN_C

Separate length for last repetition of vertical pulses for Group C. Must be enabled using LASTREPLEN_EN.

Should be programmed to a value equal to the VLENC register.

LASTREPLEN_D

Separate length for last repetition of vertical pulses for Group D. Must be enabled using LASTREPLEN_EN.

Should be programmed to a value equal to the VLEND register.

VSEQALT_EN

Special V-sequence alternation mode is enabled when this register is programmed high.

VALTSEL0_EVEN

Select lines for special V-sequence alternation mode for even lines. Used to concatenate VPAT Group A, Group B,

Group C, and Group D into unique merged patterns. Setting is used to specify one segment, with up to a maxi-

mum of 18 segments. (The FREEZE/RESUME registers function as VALTSEL when VSEQALT_EN is enabled.)

VALTSEL1_EVEN

Select lines for special V-sequence alternation mode for even lines. Used to concatenate VPAT Group A, Group B,

Group C, and Group D into unique merged patterns. Setting is used to specify one segment, with up to a maxi-

mum of 18 segments. (The FREEZE/RESUME registers function as VALTSEL when VSEQALT_EN is enabled.)

VALTSEL0_ODD

Select lines for special V-sequence alternation mode for odd lines. Used to concatenate VPAT Group A, Group B,

Group C, and Group D into unique merged patterns. Setting is used to specify one segment, with up to a maxi-

mum of 18 segments. (The FREEZE/RESUME registers function as VALTSEL when VSEQALT_EN is enabled.)

VALTSEL1_ODD

Select lines for special V-sequence alternation mode for odd lines. Used to concatenate VPAT Group A, Group B,

Group C, and Group D into unique merged patterns. Setting is used to specify one segment, with up to a maxi-

mum of 18 segments. (The FREEZE/RESUME registers function as VALTSEL when VSEQALT_EN is enabled.)

SPC_PAT_EN

Enable special V-pattern to be inserted into one repetition of a VPATA series.

SPC_PAT_EN, Bit 0: set to 1 to enable VPATB to be used as special pattern insertion.

SPC_PAT_EN, Bit 1: set to 1 to enable VPATC to be used as special pattern insertion.

SPC_PAT_EN, Bit 2: set to 1 to enable VPATD to be used as special pattern insertion.

SEQ_ALT_INC

0 = normal operation.

1 = automatically increments the sequence number at the end of the line, unless a sequence change

position boundary is reached.

SEQ_ALT_RST

0 = normal operation.

1 = automatically resets the sequence number back to the sequence defined for that particular region in the

active field register.

AD9920ABBCZ Datasheet(PDF) 36 Page - Analog Devices

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