ML6431 データシートの表示（PDF） - Micro Linear Corporation

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ML6431

Genlocking Sync Generator with Digital Audio Clock for NTSC, PAL & VGA

Micro Linear Corporation 

ML6430/ML6431

DEVICE DIFFERENCES

Tables 1 and 2 summarize the differences between the

ML6430 and ML6431. The pinouts of the ML6430 and the

ML6431 are the same with the exception that the ML6431

has a few enhancements, (Center Frequency and Free Run

Mode, see Table 1) and added functionality (see Table 2).

DEVICE

FUNCTIONAL DESCRIPTION

Video Formats,

Timing,

and Pulse

Generation

Clock

Rates

Input

Crystal

Free Run

Mode

VGA

Clock

NTSC

ML6430 Yes

PAL CCIR601 Square

Pixel

Yes Yes

Yes

4xFSC 3.58 4.43

MHz MHz

Yes Yes Yes Yes. Limited

transition

between free

run modes

1 and 2.

(Figure 4)

Yes. Limited to

640x480

pixel clock.

ML6431 Yes Yes* Yes Yes* Yes Yes Yes Yes. Faster

Yes. Works

transition be- up to 75MHz.

tween freerun (Table 6)

modes 1and 2.

(Figure 4a)

* Readjusted the center frequency for PAL square pixel with NTSC crystal to achieve greater than +/-5% range. See Table 4

VCR

Lock

Yes

Yes.

Table 1. Summary of Functional Differences between the ML6430 and ML6431.

DEVICE

ML6430

ML6431

MODE

Sleep Mode

Pulse Generator Mode*

Time Base Correction Mode

Sleep Mode

Pulse Generator Mode*

PHERROUT Mode*

REGISTER DIFFERENCES

PIN OUT DIFFERENCES

Register 7,

Bit 2

0

Register 7,

Bit 3

0

Pin 3

SLEEP

Pin 16

AUDIOCLK

1

0

54MHz**

AUDIOCLK

This function not available in the ML6430

0

0

SLEEP

AUDIOCLK

1

0

54MHz**

AUDIOCLK

X

1

Must be set HIGH

PHERROUT

*For these modes the SLEEP mode can only be enable/disabled via serial bus (Register 8).

**The 54MHz clock input (pin 3) can be any 4 x Clock up to 70MHz

Table 2. Summary of Register Differences between the ML6430 and ML6431.

8

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