UM0932 datasheet(32/43 Pages) STMICROELECTRONICS

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Host interface

UM0932

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3.3.20

SS_DataConfirm (55h)

This command is sent by the ST7580 to provide a positive confirmation to

a SS_DataRequest (Section 3.3.15) previously requested by the external host.

The ConfirmData field has the same format as for PHY_DataConfirm (see Table 37).

3.3.21

SS_DataIndication (56h)

This command is sent by the ST7580 after a reception of a power line frame in compliance

with SS frame specification (Figure 4, i.e. with a CRC correct field and encrypted according

to SS_Key MIB object, Section 4.2.3) and it exports the SS_Data indication service

(Section 2.4). The command notification occurs if the modem is set for receiving SS frames

at MIB object Modem Config 00h (Section 4.2.1), as in the diagram flow in Figure 5.

Table 46. SS_DataConfirm: Syntax

Source

Command(Args)

Possible response

ST7580

SS_DataConfirm (ConfirmData)

None

Table 47. SS_DataIndication: Syntax

Source

Command(Args)

Possible response

ST7580

SS_DataIndication (IndicationData)

None

Table 48. SS_DataIndication: IndicationData

Byte

index

Bit

index

Label

Description and available values

0 – 2

Frame

modulation

Frame modulation on the last DataIndication received

0: B-PSK

1: Q-PSK

2: 8-PSK

3: B-FSK

4: B-PSK coded

5: Q-PSK coded

6: Reserved

7: B-PSK coded with Peak Noise Avoidance

RX channel

RX channel on the last DataIndication received

0: low channel

1: high channel

4 – 7

PGA value

PGA value on the last DataIndication received

1SNR

SNR estimated over the Unique Word reception (signed value, valid for PSK

received frames only, equal to 255 – no meaning – for FSK received frames)

2 – 3

ZC delay

Delay between the received UW last bit and the mains zero-crossing (signed

value), expressed in 13 µs step

4 - 229

SS header

and payload

Received header and payload (up to 226 bytes)

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