MTV130P Просмотр технического описания (PDF) - Myson Century Inc

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производитель

MTV130P

On-Screen Display for LCD Monitor

Myson Century Inc 

MYSON

TECHNOLOGY

MTV130

Name

VDD

VFLB

INT

FBKG

BOUT

GOUT

ROUT

VSS

Pin No.

I/O

P16 P20

Descriptions

- 9 13 Power supply. Positive 5 V DC supply for internal circuitry and a 0.1uF

decoupling capacitor should be connected across to VDD and VSS.

I 10 14 Vertical input. This pin is used to input the vertical synchronizing signal.

It is leading triggered and has an internal pull-up resistor.

O 11 15 Intensity color output. 16-color selection is achievable by combining

this intensity pin with R/G/B output pins.

O 12 16 Fast Blanking output. It is used to cut off external R, G, B signals of

VGA while this chip is displaying characters or windows.

O 13 17 Blue color output. It is a blue color video signal output.

O 14 18 Green color output. It is a green color video signal output.

O 15 19 Red color output. It is a red color video signal output.

- 16 20 Ground. This ground pin is used to internal circuitry.

3.0 FUNCTIONAL DESCRIPTIONS

3.1 SERIAL DATA INTERFACE

The serial data interface receives data transmitted from an external controller. And there are 2 types of bus

can be accessed through the serial data interface, one is SPI bus and other is I2C bus.

3.1.1 SPI bus

While SSB pin is pulled to "high" or "low" level, the SPI bus operation is selected. And a valid transmission

should be starting from pulling SSB to "low" level, enabling MTV130 to receiving mode, and retain "low" level

until the last cycle for a complete data packet transfer. The protocol is shown in Figure 1.

SSB

SCK

SDA

MS

LSB

B

first byte

last byte

FIGURE 1. Data Transmission Protocol (SPI)

There are three transmission formats shown as below:

Format (a) R - C - D → R - C - D → R - C - D .....

Format (b) R - C - D → C - D → C - D → C - D .....

Format (c) R - C - D → D → D → D → D → D .....

Where R=Row address, C=Column address, D=Display data

3.1.2 I2C bus

I2C bus operation is only selected when SSB pin is left floating. And a valid transmission should be starting

from writing the slave address 7AH to MTV130. The protocol is shown in Figure 2.

Revision 1.0

3/18

28/April/2000

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