OV7410 データシートの表示（PDF） - Omnivison Technologies

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OV7410

OV7910P SINGLE-CHIP CMOS COLOR PAL CAMERA , OV7410P/OV7411P SINGLE-CHIP CMOS B&W PAL CAMERA

Omnivison Technologies 

OMNIVISION TECHNOLOGIES, Inc.

Preliminary

OV7910P/OV7410P/OV7411P

SINGLE IC CMOS COLOR & B/W PAL ANALOG CAMERAS

2. I2C Bus

Many of the functions and configuration registers in the

OV7910P/OV7410P/OV7411P image sensors are

available through the I2C high-speed serial interface.

The I2C port is enabled by asserting the I2CEN line

(pin 34) through a 10K ohm resistor to VDD. When the

rate using a 7-bit address/data transfer protocol .

I2C

capability is enabled (I2CEN = 1),the OV7910P/

OV7410P/OV7411P imager operates as a slave

device that supports up to 400 kbps serial transfer

1ST BYTE

2ND BYTE

3RD BYTE

S SLAVE ID (7BIT) RW A SUBADDRESS (8BIT) A

DATA (8BIT)

MSB

START

LSB=0

ACK

MASTER TRANSMIT, SLAVE RECEIVE (WRITE CYCLE)

AP

ACK

STOP

1ST BYTE

2ND BYTE

S SLAVE ID (7BIT) RW A SUBADDRESS (8BIT) A P

MSB

START

LSB=0

ACK

STOP

MASTER TRANSMIT, SLAVE RECEIVE (DUMMY WRITE CYCLE)

1ST BYTE

2ND BYTE

3RD BYTE

S SLAVE ID (7BIT) RW A

DATA (8BIT)

A

DATA (8BIT)

1P

MSB

START

LSB=1

ACK

MASTER RECEIVE, SLAVE TRANSMIT (READ CYCLE)

STOP

NO ACK IN

LAST BYTE

SLAVE ID - 1000000X

X – RW BIT, 1: READ, 0:WRITE

S – START CONDITION

A – ACKNOWLEDGE BIT

P – STOP CONDITION

Figure 3. I2C Bus Protocol Format

– SLAVE TRANSMIT

– MASTER TRANSMIT

– MASTER INITIATE

December 7, 1999

Version 1.4

11

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