UM0934 datasheet(56/113 Pages) STMICROELECTRONICS

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Host interface

UM0934

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Doc ID 17389 Rev 2

5.3.15

CMD_AlarmRequest (88h)

This command exports the following services to the external host:

●

PHY mode: P_Alarm.Request

●

MAC mode: M_Alarm.Request.

This command is sent by the external host to request the transmission of an alarm.

A positive or negative confirmation (CMD_AlarmConfirm) follows this request; if accepted,

the request is accomplished in the next alarm slot.

5.3.16

CMD_AlarmConfirm (89h)

This command exports the following services to the external host:

●

PHY mode: P_Alarm.Confirm

●

MAC mode: M_Alarm.Confirm.

This command is sent by the ST7570 to confirm an alarm request.

The data field is a 1-byte field containing the result of the previous request.

Table 45.

CMD_AlarmIndication: Data (PHY or MAC mode)

Byte index

Label

Description

0..3

CNT

Alarms received counter.

If a long alarm indication is selected:

4..6

Amplitude estimation of channel 0 signal.

7..9

Amplitude estimation of channel 0 noise.

10..12

Amplitude estimation of channel 1 signal.

13..15

Amplitude estimation of channel 1 noise.

PAD

Padding byte.

Table 46.

CMD_AlarmRequest: Syntax

Source

Command(Args)

Possible response

Ext. Host

CMD_AlarmRequest(none)

CMD_AlarmConfirm(Data)

Table 47.

CMD_AlarmConfirm: Syntax

Source

Command(Args)

Possible response

ST7570

CMD_AlarmConfirm(Data)

None

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