ML6411 Просмотр технического описания (PDF) - Micro Linear Corporation

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ML6411

Programmable Video Digitizer with Selectable Gain and Clamps

Micro Linear Corporation 

FUNCTIONAL DESCRIPTION (Continued)

RESET DEFAULT MODE

The ML6411 provides a RESET pin that programs the

Control Registers as described in Table 8. The RESET pin is

active HIGH. Basically, the ML6411 on RESET defaults to:

s S-Video mode. Ideally, for PAL S-Video since Preset

Mode (STDA and STDB bits) is set to unity gain boost

(GPRESET = 1) for both Y and C (see Table 2)

s Y is clamped to 16. C is clamped to 128 (see Table 3)

and CLPA and CLPB bits)

ML6411

s UGC is set to unity gain (GUGCA = 1 and GUGCB = 1) to

either Y or C channels (see Table 4 and GNA and GNB

bits)

s Input pin are set for 2VP-P inputs on both Y and C

MODE REGISTER/BIT VALUES

Dual CV Register D,

Bit D3= CV/S_Mode =1

CHANNEL

A

SIGNAL

CV1

INPUT

Y/CV1 pin

B

S-Video Register D,

A

Bit D3= CV/S_Mode =0

CV2 C/CV2 pin

Y Y/CV1 pin

Note: Volt Peak-to-Peak = VP-P

B

C C/CV2 pin

OUPUT

AOUT<7:0>

BOUT<7:0>

AOUT<7:0>

BOUT<7:0>

OPTIONS

Gain Control Selection

(UGC, SGC) and Clamp

Selection.

1VP-P or 2VP-P inputs.

Serial Bus Programable.

Gain Control Selection

(UGC, SGC) and Clamp

Selection.

1VP-P or 2VP-P inputs.

Serial Bus Programable.

Table 1. Various Video Modes Using the ML6411 and Key Features

9

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