Enhanced Product

ADMV8818-EP

Rev. A | Page 29 of 36

Address: 0x010, Reset: 0x00, Name: FAST_LATCH_POINTER

Fast Latch Load

Fast Latch Pointer

0

0

1

0

2

0

3

0

4

0

5

0

6

0

7

0

[7] FAST_LATCH_LOAD (R/W)

[6:0] FAST_LATCH_POINTER (R/W)

Table 12. Bit Descriptions for FAST_LATCH_POINTER

Bits

Bit Name

Description

Reset

Access

7

FAST_LATCH_LOAD

Fast Latch Load. Loads the pointer location into the internal state machine for fast

latch mode. The FAST_LATCH_LOAD bit self resets to zero.

0x0

R/W

[6:0]

FAST_LATCH_POINTER

Fast Latch Pointer. Determines the pointer location within the fast latch lookup table.

0x0

R/W

Address: 0x011, Reset: 0x7F, Name: FAST_LATCH_STOP

Fast Latch Stop Index

0

1

1

1

2

1

3

1

4

1

5

1

6

1

7

0

[7] RESERVED

[6:0] FAST_LATCH_STOP (R/W)

Table 13. Bit Descriptions for FAST_LATCH_STOP

Bits

Bit Name

Description

Reset

Access

7

RESERVED

Reserved.

0x0

R

[6:0]

FAST_LATCH_STOP

Fast Latch Stop Index. Sets the stop index within the fast latch lookup table.

0x7F

R/W

Address: 0x012, Reset: 0x00, Name: FAST_LATCH_START

Fast Latch Start Index

0

0

1

0

2

0

3

0

4

0

5

0

6

0

7

0

[7] RESERVED

[6:0] FAST_LATCH_START (R/W)

Table 14. Bit Descriptions for FAST_LATCH_START

Bits

Bit Name

Description

Reset

Access

7

RESERVED

Reserved.

0x0

R

[6:0]

FAST_LATCH_START

Fast Latch Start Index. Sets the start index within the fast latch lookup table. Note that,

when exiting and then re-entering fast latch mode (SFL pin), the internal state machine

resumes where it left off and not at the start index. If a new start index is programmed, it

may be necessary to sequence through a number of states from the point at which the

state machine left off. This action is necessary for a positive incremental direction. For a

negative decremental direction, this action is necessary for the stop index.

0x0

R/W

Address: 0x013, Reset: 0x00, Name: FAST_LATCH_DIRECTION

Fast Latch Direction

0

0

1

0

2

0

3

0

4

0

5

0

6

0

7

0

[7:1] RESERVED

[0] FAST_LATCH_DIRECTION (R/W)

Table 15. Bit Descriptions for FAST_LATCH_DIRECTION

Bits

Bit Name

Description

Reset

Access

[7:1]

RESERVED

Reserved.

0x0

R

0

FAST_LATCH_DIRECTION

Fast Latch Direction. Determines which direction to sequence within the fast latch

lookup table.

0x0

R/W

0: increment.

1: decrement.