ICS94206F-T データシートの表示（PDF） - Integrated Circuit Systems

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ICS94206F-T

Programmable System Frequency Generator for PII/III™

Integrated Circuit Systems 

ICS94206

General I2C serial interface information for the ICS94206

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 20

(see Note)

• ICS clock will acknowledge each byte one at a time

• Controller (host) sends a Stop bit

How to Write:

Controller (Host)

Start Bit

ICS (Slave/Receiver)

Address D2(H)

Dummy Command Code

Dummy Byte Count

Byte 0

Byte 1

Byte 2

Byte 3

Byte 4

Byte 5

Byte 6

ACK

ACK

ACK

ACK

ACK

ACK

ACK

ACK

ACK

ACK

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 8 (default)

• ICS clock sends Byte 0 through byte X (if X(H) was

written to byte 8).

• Controller (host) will need to acknowledge each byte

• Controller (host) will send a stop bit

How to Read:

Controller (Host)

Start Bit

ICS (Slave/Receiver)

Address D3(H)

ACK

ACK

ACK

ACK

ACK

ACK

ACK

ACK

ACK

Byte Count

Byte 0

Byte 1

Byte 2

Byte 3

Byte 4

Byte 5

Byte 6

If 7H has been written to B6

ACK

Byte 7

Byte 18

Byte 19

Byte 20

Stop Bit

ACK

ACK

ACK

*See notes on the following page.

If 12H has been written to B6

ACK

If 13H has been written to B6

ACK

If 14H has been written to B6

ACK

Stop Bit

Byte18

Byte 19

Byte 20

3

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