LF3330QC15 datasheet(4/15 Pages) LODEV

tên linh kiện	LF3330QC15

Giải thích chi tiết về linh kiện	Vertical Digital Image Filter

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DEVICES INCORPORATED

LF3330

Vertical Digital Image Filter

4

Video Imaging Products

11/08/2001–LDS.3330-M

ACC — Accumulator Control

When ACC is HIGH, the accumulator

is enabled for accumulation and the

accumulator output register is

disabled for loading. When ACC is

LOW, no accumulation is performed

and the accumulator output register

is enabled for loading. ACC is

latched on the rising edge of CLK.

SHEN — Shift Enable

SHEN enables or disables the

loading of data into the input/

cascade registers and the line

buffers. When SHEN is LOW, data

is loaded into the input/cascade

registers and shifted through the

line buffers on the rising edge of

CLK. When SHEN is HIGH, data

can not be loaded into the input/

cascade registers or shifted through

the line buffers and their contents

will not be changed.

RSL3-0 — Round/Select/Limit Control

RSL3-0 determines which of the

sixteen user-programmable round/

select/limit registers are used in the

round/select/limit circuitry. A

value of 0 on RSL3-0 selects round/

select/limit register 0. A value of 1

selects round/select/limit register 1

and so on. RSL3-0 is latched on the

rising edge of CLK (see the round,

select, and limit sections for a

complete discussion).

OED — DOUT Output Enable

When OED is LOW, DOUT15-0 is

enabled for output. When OED is

HIGH, DOUT15-0 is placed in a

high-impedance state.

OEC — COUT Output Enable

When OEC is LOW, COUT15-0 is

enabled for output. When OEC is

HIGH, COUT15-0 is placed in a high-

impedance state.

BITS

FUNCTION

DESCRIPTION

0

Limit Enable

0 : Limiting Disabled

1 : Limiting Enabled

11-1

Reserved

Must be set to “0”

TABLE 4.

CONFIGURATION REGISTER 2 – ADDRESS 202H

BITS

FUNCTION

DESCRIPTION

0

Cascade Mode

0 : First Device

1 : Cascaded Device

11-1

Reserved

Must be set to “0”

TABLE 5.

CONFIGURATION REGISTER 3 – ADDRESS 203H

BITS

FUNCTION

DESCRIPTION

11-0

Line Buffer Length

See Line Buffer Description Section

TABLE 2.

CONFIGURATION REGISTER 0 – ADDRESS 200H

BITS

FUNCTION

DESCRIPTION

0

Line Buffer Mode

0 : Delay Mode

1 : Recirculate Mode

1

Line Buffer Load

0 : Normal Load

1 : Parallel Load

2

Odd and Even Field

0 : VB Port Disabled

Filtering Port Enable

1 : VB Port Enabled

3

Odd and Even Field

0 : VB Line Buffer Disabled

Filtering Line Buffer Enable

1 : VB Line Buffer Enabled

11-4

Reserved

Must be set to “0”

TABLE 3.

CONFIGURATION REGISTER 1 – ADDRESS 201H

FIGURE 4. RSL CIRCUITRY

32

4

RSL3-0

RND

LIMIT

32

16

RSL CIRCUITRY

DATA IN

32

DATA OUT

5

SELECT

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