ADM1034

Rev. 0 | Page 13 of 40

START BY

MASTER

STOP BY

MASTER

ACK. BY

ADM1034

ACK. BY

ADM1034

ACK. BY

ADM1034

A6

11

9

A5

A4

A3

A2

A1

A0

R/W

D7

D6

D5

D4

D3

D2

D1

D0

SCL

SDA

FRAME 1

SERIAL BUS ADDRESS BYTE

FRAME 2

ADDRESS POINTER REGISTER BYTE

FRAME 3

DATA BYTE

9

SDA (CONTINUED)

SCL (CONTINUED)

9

1

D7

D6

D5

D4

D3

D2

D1

D0

Figure 18. Writing a Register Address to the Address Pointer Register, then Writing Data to the Selected Register

STOP BY

MASTER

ACK. BY

ADM1034

ACK. BY

ADM1034

START BY

MASTER

SCL

11

9

FRAME 1

SERIAL BUS ADDRESS BYTE

FRAME 2

ADDRESS POINTER REGISTER BYTE

9

A6

A5

A4

A3

A2

A1

A0

R/W

D7

D6

D5

D4

D3

D2

D1

D0

SDA

Figure 19. Writing to the Address Pointer Register Only (Send Byte)

STOP BY

MASTER

START BY

MASTER

ACK. BY

ADM1034

NO ACK. BY

ADM1034

R/W

SCL

11

9

9

SDA

A6

A5

A4

A3

A2

A1

A0

D7

D6

D5

D4

D3

D2

D1

D0

FRAME 1

SERIAL BUS ADDRESS BYTE

FRAME 2

DATA BYTE FROM ADM1034

Figure 20. Reading Data from a Previously Selected Register