LF3370 查看數據表（PDF） - LOGIC Devices

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LF3370

High-Definition Video Format Converter

LOGIC Devices 

DEVICES INCORPORATED

LF3370

High-Definition Video Format Converter

TABLE 12. CONFIGURATION REGISTER 12 – ADDRESS 207

BITS FUNCTION

DESCRIPTION

12-0 Channel ‘A’ Blanking Word Channel ‘A’ Blanking Level Word

TABLE 13. CONFIGURATION REGISTER 13– ADDRESS 208

BITS FUNCTION

DESCRIPTION

12-0 Channel ‘B’ Blanking Word Channel ‘B’ Blanking Level Word

TABLE 14. CONFIGURATION REGISTER 14 – ADDRESS 209

BITS FUNCTION

DESCRIPTION

12-0 Channel ‘C’ Blanking Word Channel ‘C’ Blanking Level Word

TABLE 15. CONFIGURATION REGISTER 15 – ADDRESS 20A

BITS FUNCTION

DESCRIPTION

12-0 Channel ‘D’ Blanking Word Channel ‘D’ Blanking Level Word

programmed to double the length [(de-

sired length x 2) – 2)] to properly align

data due to the core running at half the

CLK rate.

First Operation Select

‘First Operation Select’ is a bypassing

option where you select to use the first

functional block (Half-Band Filter or

Matrix Multiplier/Key Scaler) in any given

arrangement. If the device was arranged in

such a way that the Half-Band Filter section

fed the Matrix Multiplier/Key Scaler section

and ‘First Operation Select’ was enabled,

the Half-Band Filter section will be used

and the Matrix Multiplier/Key Scaler

section will be bypassed.

If the device was arranged in such a way

that the Matrix Multiplier/Key Scaler

section fed the Half-Band Filter section

and ‘First Operation Select’ was enabled,

the Matrix Multiplier/Key Scaler section

will be used - its output will be routed

directly to the output LUT section. Unlike

in other bypassing options , the total

pipeline latency of the LF3370 is reduced

by the appropriate delay. If the Half-Band

Filter section was bypassed by this method,

the overall pipeline latency should be

reduced by 35 CLK cycles. If the Matrix

Multiplier section was bypassed by this

method, the overall pipeline latency

should be reduced by 6 CLK cycles. This

function is implemented by configuring bit

9 of Configuration Register 0. The ‘Func-

tional Arrangement’ of the device is

determined by configuring bit 4 of Con-

figuration Register 0.

Video Imaging Products

16

03/13/2001–LDS.3370-F

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