NCT75

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9

FRAME 1

SERIAL BUS ADDRESS BYTE

SDA

SCL

START BY

MASTER

FRAME 2

ADDRESS POINTER REGISTER BYTE

D7

D6

D5

D4

D3

D2

D1

D0

A6

A5

A4

A3

A2

A1

A0

11

99

STOP BY

MASTER

ACK. BY

NCT75

ACK. BY

NCT75

Figure 5. Writing to the Address Pointer Register

R/W

D7

D6

D5

D4

D3

D2

D1

D0

FRAME 3

DATA BYTE

ACK. BY

NCT75

STOP BY

MASTER

SDA (CONTINUED)

SCL (CONTINUED)

FRAME 1

SERIAL BUS ADDRESS BYTE

ACK. BY

NCT75

SDA

SCL

START BY

MASTER

FRAME 2

ADDRESS POINTER REGISTER BYTE

D7

D6

D5

D4

D3

D2

D1

D0

A6

A5

A4

A3

A2

A1

A0

ACK. BY

NCT75

11

99

19

Figure 6. Writing a Register Address to the Address Pointer Register, then

Writing a Single Byte of Data to the Configuration Register

R/W

D15 D14 D13 D12 D11 D10 D9

D8

FRAME 3

DATA BYTE

ACK. BY

NCT75

(CONTINUED)

FRAME 1

SERIAL BUS ADDRESS BYTE

ACK. BY

NCT75

SDA

SCL

START BY

MASTER

FRAME 2

ADDRESS POINTER REGISTER BYTE

D7

D6

D5

D4

D3

D2

D1

D0

A6

A5

A4

A3

A2

A1

A0

ACK. BY

NCT75

11

99

19

D7

D6

D5

D4

D3

D2

D1

D0

FRAME 4

DATA BYTE

ACK. BY

NCT75

STOP BY

MASTER

19

Figure 7. Writing to the Address Pointer Register Followed by

Two Bytes of Data to a 16 Bit Limit Register

SCL

(CONTINUED)

SDA

R/W

FRAME 1

SERIAL BUS ADDRESS BYTE

SDA

SCL

START BY

MASTER

FRAME 2

DATA BYTE FROM REGISTER

D7

D6

D5

D4

D3

D2

D1

D0

A6

A5

A4

A3

A2

A1

A0

11

99

STOP BY

MASTER

ACK. BY

NCT75

NO ACK. BY

MASTER

Figure 8. Reading Data from the Configuration Register

R/W