MAX8952 데이터 시트보기 (PDF) - Maxim Integrated

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MAX8952

2.5A Step-Down Regulator with Remote Sense in 2mm x 2mm WLP

Maxim Integrated 

MAX8952

2.5A Step-Down Regulator

with Remote Sense in 2mm x 2mm WLP

LEGEND

MASTER TO

SLAVE

SLAVE TO

MASTER

a) WRITING TO A SINGLE REGISTER WITH THE WRITE BYTE PROTOCOL

1

7

11

8

1

S SLAVE ADDRESS

0A

REGISTER POINTER

A

R/W

b) WRITING TO MULTIPLE REGISTERS

1

7

11

8

1

S SLAVE ADDRESS

0 A REGISTER POINTER X

A

R/W

...

8

1

DATA X+n-1

A

8

DATA

8

DATA X

8

DATA X+n

11

AP

NUMBER OF BITS

1

A

1

AP

8

DATA X+1

1

NUMBER OF BITS

A ...

NUMBER OF BITS

Figures 14a and 14b. Writing to the IC

1) The master sends a START command.

2) The master sends the 7-bit slave address followed

by a write bit.

3) The addressed slave asserts an acknowledge by

pulling SDA low.

4) The master sends an 8-bit register pointer.

5) The slave acknowledges the register pointer.

6) The master sends a REPEATED START condition.

7) The master sends the 7-bit slave address followed

by a read bit.

8) The slave asserts an acknowledge by pulling SDA low.

9) The slave sends the 8-bit data (contents of the

register).

10) The master asserts a not acknowledge by keeping

SDA high.

11) The master sends a STOP condition.

In addition, the IC can read a block of multiple sequential

registers as shown in Figure 15b. Use the following pro-

cedure to read a sequential block of registers:

1) The master sends a START command.

2) The master sends the 7-bit slave address followed

by a write bit.

3) The addressed slave asserts an acknowledge by

pulling SDA low.

4) The master sends an 8-bit register pointer of the

first register in the block.

5) The slave acknowledges the register pointer.

6) The master sends a REPEATED START condition.

7) The master sends the 7-bit slave address followed

by a read bit.

8) The slave asserts an acknowledge by pulling SDA low.

9) The slave sends the 8-bit data (contents of the reg-

ister).

10) The master asserts an acknowledge by pulling SDA

low when there is more data to read, or a not

acknowledge by keeping SDA high when all data

has been read.

11) Steps 9 and 10 are repeated for as many registers

in the block, with the register pointer automatically

incremented each time.

12) The master sends a STOP condition.

Maxim Integrated

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