ADV7311 datasheet(17/84 Pages) AD

17 / 84 page

REV. A

ADV7310/ADV7311

–17–

WRITE

SEQUENCE

READ

SEQUENCE

SLAVE ADDR

A(S)

SUBADDR

A(S)

DATA

A(S)

DATA

A(S)

SLAVE ADDR

A(S)

SUBADDR

A(S) S

SLAVE ADDR

A(S)

DATA

A(M)

A(M) P

S = START BIT

P = STOP BIT

A(S) = ACKNOWLEDGE BY SLAVE

A(M) = ACKNOWLEDGE BY MASTER

A(S) = NO-ACKNOWLEDGE BY SLAVE

A(M) = NO-ACKNOWLEDGE BY MASTER

LSB = 0

LSB = 1

Figure 20. Read and Write Sequence

The MPU can write to or read from all of the registers of the

ADV7310/ADV7311 except the subaddress registers, which are

write only registers. The subaddress register determines which

cations with the part through the bus start with an access to the

subaddress register. A read/write operation is then performed

from/to the target address, which increments to the next address

until a stop command is performed on the bus.

The following tables describe the functionality of each register.

All registers can be read from as well as written to, unless other-

wise stated.

Subaddress Register (SR7–SR0)

The communications register is an 8-bit write only register. After

the part has been accessed over the bus and a read/write opera-

tion is selected, the subaddress is set up. The subaddress register

determines to/from which register the operation takes place.

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