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MTV030 Revision 1.0 10/15/1999

MTV030

MYSON

TECHNOLOGY

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

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 MTV030 to receiving mode, and retain "low" level

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

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

from writing the slave address 7AH(write mode), or 7BH(read mode) to MTV030. The protocol is shown in

Figure 2. And the auto sizing video measurement data (total 10 bytes) are read only registers and the others

are write only registers.

Format (a) S - R - C - D

→ R - C - D → R - C - D .....

Format (b) S - R - C - D

→ C - D → C - D → C - D .....

Format (c) S - R - C - D

→ D → D → D → D → D .....

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

Format (a) S

→ D → D → D → D → D → D → D → D → D → D → dummy D → dummy D .....

Where S=Slave address, D=Measurement data

MSB

LSB

SSB

SCK

SDA

first byte

last byte

FIGURE 1. Data Transmission Protocol (SPI)

SCK

SDA

first byte

　　　　

　

START

ACK

second byte

last byte

ACK

STOP

B7

B6

B0

B7

B0