Denon DN-A7100 - AV Surround Preamplifier User's Guide download pdf (Page 43)

ENGLISH

Examples of the handshaking ﬂ owchart

• Example of successful handshaking

HOST SLAVE

Command

Status answer

Command

acceptable

ACK

Status request

Status answer

Request

acceptable

Auto status

feedback

Changed

some status!

The product can reply ACK instead of related status, if the product can not send the related status

immediatly.

• Examples of handshaking error

HOST SLAVE

Command

Status request

Command

incorrect

NAK

Request

incorrect

NAK

RECOMMENDATIONS OF COMMAND, STATUS AND LAYER DEFINITION

- All Commands, Statuses and Layers will be deﬁ ned other speciﬁ c document.

- [MANDATORY] The product MUST have Commands and the Statuses same as a remote controller buttons

(IR controller) of the product.

- All commands are required working by discreate as ON/OFF commands. (It means that do not support

TOGGLE command only.)

- All Commands and Statuses are deﬁ ned same character size except ACK/NAK on the product.(Recommended

character length : 3~6 characters)

- It permits attaching 0x0A character to reply characters from the product. In this case, must suppose that the

object is followed altogether.

- Recommend to supports numbers or values direct setting command, if it has variable numbers or values.

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Denon DN-A7100 - AV Surround Preamplifier User's Guide Page 43