LM93 datasheet(23/92 Pages) NSC

tên linh kiện	LM93

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14.0 SMBus Interface (Continued)

12. The master receives byte 1 and then asserts ACK.

13. The master receives byte 2 and then asserts ACK.

14. The master receives N-3 data bytes, and asserts ACK for each one.

15. The master receives data byte N and asserts a NACK.

16. The master asserts a STOP condition to end the transaction.

45678

910

Slave

Address

W A

Block

Read

Command

Code

(F1h)

Byte

Count

(2h)

Start

Address

Byte

Count

(1–20h)

(N)

Slave

Address

Byte

Count

(1–20h)

(N)

Data

Byte 1

Data

Byte 2

Data

Byte N

Special Notes:

The LM93 returns 00h when address locations outside of normal address space are read.

Block reads do not wrap around from address FFh to 00h

If the master acknowledges more bytes that it requested, the LM93 continues to supply data until the master does not

acknowledge a byte.

If the master does not acknowledges a byte to prematurely abort a block read, the LM93 gets off the bus to allow the master

to issue a STOP signal.

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