UM0932 datasheet(25/43 Pages) STMICROELECTRONICS

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UM0932

Host interface

3.3.10

PingRequest (2Ch)

This command is sent by external host to test the robustness of the local port link with the

ST7580.

If accepted, the ST7580 answers with a PingConfirm command (Section 3.3.11).

3.3.11

PingConfirm (2Dh)

This command is sent by the ST7580 to notify the reception of a PingRequest. The payload

field of the local frame presents the same data received in the previous PingRequest.

3.3.12

PHY_DataRequest (24h)

This command is sent by the external host to request data transmission and it exports the

PHY_Data transmission service (Section 2.3).



If accepted, the ST7580 constructs a PHY frame (Figure 2) that is transmitted over the

power line in accordance with the details expressed in RequestData field (Table 35).

A positive PHY_DataConfirm (Section 3.3.13) is generated at the end of the

transmission.



If refused, the modem generates a PHY_DataError (Table 12).

Table 30. PingRequest: Syntax

Source

Command(Args)

Possible response

External Host PingRequest(RequestData)

Request accepted: PingConfirm (ConfirmData)

Table 31. PingRequest: RequestData

Byte index

Label

Description

0 - n

DATA

Payload with variable length

Table 32. PingConfirm: Syntax

Source

Command(Args)

Possible response

ST7580

PingConfirm(ConfirmData)

Table 33. PingConfirm: ConfirmData

Byte index

Label

Description

0 - n

DATA

Payload with the values received in the previous PingRequest

(Section 3.3.10)

Table 34. PHY_DataRequest: Syntax

Source

Command(Args)

Possible response

External host

PHY_DataRequest(

RequestData)

Request accepted: PHY_DataConfirm (ConfirmData)

Request rejected: PHY_DataError (ErrorData)

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