1.4.4 - Position Register

11

6

5

0

VERTICAL POSITION

HORIZONTAL POSIT ION

HORIZONTAL POSITION

Any value from 6 to 63

VERTICAL POSITION

Any value from 1 to 63

1.4.5 - Mode Register

11

10

9876

543210

M11

M10

M9

M8

M7

M6

M5

M4

M3

M2

M1

M0

M0 : M0 = 0

M0 = 1

:

:

the BAR pin is disabled

the BAR pin has an action on the line PLL

M1 : M1 = 0

M1 = 1

:

:

the missing sync pulses are not detected

the missing sync pulses are detected

M2 : M2 = 0

M2 = 1

:

:

the MUTE pin is forced to 0

the MUTE pin delivers the internal MUTE signal

M3 : M3 = 0

M3 = 1

:

:

the MUTE time constant is 8 lines

the MUTE time constant is 32 lines

M4 : M4 = 0

M4 = 1

:

:

the sync is not re-inserted

the sync is re-inserted for improved text stability

M5 : M5 = 0

M5 = 1

:

:

the gain of pins VIDEO OUT1 & VIDEO OUT2 is 0dB.

the gain of pins VIDEO OUT1 & VIDEO OUT2 is 6dB.

M6 : M6 = 0

M6 = 1

:

:

the color encoder is enabled (PAL or NTSC)

the color encoder is disabled (B&W or SECAM)

M7 : M7 = 0

M7 = 1

:

:

the VIDEO OUT2 pin outputs the VIDEO IN signal

the VIDEO OUT2 pin outputs the composite sync

M8 : M8 = 0

M8 = 1

:

:

the VIDEO OUT2 pin is in high impedance state

the VIDEO OUT2 pin is in low impedance state

M9 : This Mode bit has to be kept at a low level.

M10 : M10 = 0

M10 = 1

:

:

No delay compensation

It enables the delay compensation of the internal sync extractor.

M11 : M11 = 0

M11 = 1

:

:

The mute signal output is synchronized on vertical sync in order to limit its transitions.

The mute signal is not synchronized on vertical sync thus accelerating the VIDEO IN

presence detection (useful in full page mode).

2 - THE MICROPROCESSOR SERIAL INTERFACE

The STV5730 is down loaded by the microprocessor through a three wire serial interface : DATA, CLK,

CSN. The CLK and CSN signals are internally ORed in order to validate the transfer when the STV5730 is

chip selected only (i.e. CSN = 0). The CSN rising edge validates the internal data transfer.

2.1 - Message Formats (see Figure 2)

16-bit, 8-bit and 0-bit formats are available. The 8-bit and 0-bit message formats may be useful to speed

up the STV5730 down loading.

15

12

11

87654

0

0000

BUF[11:8]

STRU[7:6]

0

DEPL[4:0]

ADDRESS

This 16-bit address message loads the serial interface write pointer. This address is incremented after each

data message.

15

12

11

0

0001

DATA[11:0]

DATA

This 16-bit data message writes the data at the location indicated by the write pointer.

STV5730

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