UM0934 datasheet(58/113 Pages) STMICROELECTRONICS

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Host interface

UM0934

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Doc ID 17389 Rev 2

5.3.19

SPY_SearchSynchroIndication (C0h)

If the ST7570 is configured to operate in PHY mode and as Monitor (Section 3.4.1), and is

not mains synchronized, this command is sent from the ST7570 to the external host on the

beginning of each time-slot until a valid synchronization is found.

Available in PHY mode only.

Table 52.

SPY_SubframeIndication: SpyData (PHY mode)

Byte index

Label

Description

0..2

Signal amplitude estimated on channel 0 (Section : Raw estimation)

3..5

Noise amplitude estimated on channel 0 (Section : Raw estimation)

6..8

Signal amplitude estimated on channel 1 (Section : Raw estimation)

9..11

Noise amplitude estimated on channel 1 (Section : Raw estimation)

12..13

ASK0

Number of bits demodulated using an ASK method on channel 0

(Section 3.6.2)

14..15

ASK1

Number of bits demodulated using an ASK method on channel 1

(Section 3.6.2)

16..17

FSK

Number of bits demodulated using an SFSK method (Section 3.6.2)

PGA

PGA Gain code (Section 3.6.3)

19..56

P_SDU 38-byte physical service data unit

57..59

SNR0

Signal to noise ratio on channel 0 (Section : Fine estimation)

60..62

SNR1

Signal to noise ratio on channel 1 (Section : Fine estimation)

Table 53.

SPY_SearchSynchroIndication: Syntax

Source

Command(Args)

Possible response

ST7570

SPY_SearchSynchroIndication(none)

None

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