ICS94209 datasheet(12/19 Pages) ICST

12 / 19 page

ICS94209

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General I

2C serial interface information for the ICS94209

How to Write:

• Controller (host) sends a start bit.

• Controller (host) sends the write address D2

(H)

• ICS clock will acknowledge

• Controller (host) sends a dummy command code

• ICS clock will acknowledge

• Controller (host) sends a dummy byte count

• ICS clock will acknowledge

• Controller (host) starts sending Byte 0 through Byte 28

(see Note 2)

• ICS clock will acknowledge each byte one at a time

• Controller (host) sends a Stop bit

How to Read:

• Controller (host) will send start bit.

• Controller (host) sends the read address D3

(H)

• ICS clock will acknowledge

• ICS clock will send the byte count

• Controller (host) acknowledges

• ICS clock sends Byte 0 through byte 6 (default)

• ICS clock sends Byte 0 through byte X (if X

(H) was

written to byte 6).

• Controller (host) will need to acknowledge each byte

• Controller (host) will send a stop bit

*See notes on the following page.

Controller (Host)

ICS (Slave/Receiver)

Start Bit

Address D2(H)

ACK

Dummy Command Code

ACK

Dummy Byte Count

ACK

Byte 0

ACK

Byte 1

ACK

Byte 2

ACK

Byte 3

ACK

Byte 4

ACK

Byte 5

ACK

Byte 6

ACK

Byte 18

ACK

Byte 19

ACK

Byte 20

ACK

Stop Bit

How to Write:

Controller (Host)

ICS (Slave/Receiver)

Start Bit

Address D3(H)

ACK

Byte Count

ACK

Byte 0

ACK

Byte 1

ACK

Byte 2

ACK

Byte 3

ACK

Byte 4

ACK

Byte 5

ACK

Byte 6

ACK

If 7H has been written to B6

Byte 7

ACK

If 1AH has been written to B6

Byte18

ACK

If 1BH has been written to B6

Byte 19

ACK

If 1CH has been written to B6

Byte 20

ACK

Stop Bit

How to Read:

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