Frame1Two-WireSlaveAddressByte

Frame2PointerRegisterByte

0

StartBy

Master

ACKBy

AMC80

ACKBy

AMC80

Frame3Two-WireSlaveAddressByte

Frame4DataByte1ReadRegister

StartBy

Master

ACKBy

AMC80

ACKBy

Master

(2)

From

AMC80

1

9

1

9

1

9

1

9

SDA

SCL

1

0

1

R/W

P7

P6

P5

P4

P3

P2

P1

P0

¼

¼

¼

SDA

(Continued)

SCL

(Continued)

SDA

(Continued)

SCL

(Continued)

0

1

0

1

A2

(1)

A1

(1)

A0

(1)

A2

(1)

A1

(1)

A0

(1)

R/W

D7

D6

D5

D4

D3

D2

D1

D0

Frame5DataByte2ReadRegister

StopBy

Master

ACKBy

Master

(3)

From

AMC80

1

9

D7

D6

D5

D4

D3

D2

D1

D0

StopBy

Master

Frame1Two-WireSlaveAddressByte

Frame2PointerRegisterByte

Frame4DataByte2

0

StartBy

Master

ACKBy

AMC80

ACKBy

AMC80

ACKBy

AMC80

StopBy

Master

1

9

1

1

D7

D6

D5

D4

D3

D2

D1

D0

9

Frame3DataByte1

ACKBy

AMC80

1

D7

SDA

(Continued)

SCL

(Continued)

D6

D5

D4

D3

D2

D1

D0

9

9

SDA

SCL

1

0

1

A2

(1)

A1

(1)

A0

(1)

R/W

P7

P6

P5

P4

P3

P2

P1

P0

¼

¼

AMC80

www.ti.com

SBOS559B – MAY 2011 – REVISED OCTOBER 2015

(1)

The values of A0, A1, and A2 are determined by the A0, A1, and A2 pins, respectively.

Figure 8. Two-Wire Timing for Write Word Format

(1)

The values of A0, A1, and A2 are determined by the A0, A1, and A2 pins, respectively.

(2)

Master should leave SDA high to terminate a single-byte read operation.

(3)

Master should leave SDA high to terminate a two-byte read operation.

Figure 9. Two-Wire Timing for Read Word Format

Copyright © 2011–2015, Texas Instruments Incorporated

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