AMIS-49587 Datasheet, PDF (37/59 Pages) ON Semiconductor – Power Line Carrier Modem

AMIS−49587
DataStats
Description: This request is used to read the value of the current data statistics in the AMIS−49587. The request contains one
byte which is used to know whether the counters must be reset or not (00: no reset, 01: reset). These statistics are coded this
way:
If the AMIS−49587 is synchronized (30 bytes):
− The value of signal and noise (S0, N0, S1, N1) for the last subframe received (4 * 2 bytes) + the method and gain used
to demodulate this subframe (2 * 1 byte)
− The method, gain and SNR (S0/N0, S1/N1) on the 5 last time slots in reception mode (5 * 4 bytes) + 1 byte to know the
actual position in the table
If the AMIS−49587 is not synchronized (36 bytes):
− The values of the real and imaginary parts of the signal for each frequency (I0, Q0, I1, Q1), for the 4 last calculated
time−slots (4 * (4 * 2 bytes))
− The current position in the board (1 byte)
− The software reception gain (1 byte)
− The hardware reception gain (1 byte)
− The R_ALC value (1 byte)
Request Format:
<STX> Length 41h
1000h
Reset Counters (1 byte) + Pad (0 to 35
bytes)
CHK
Confirm Format:
If the AMIS−49587 is synchronized:
<STX> Length
42h
1000h
Signal_noise_subframe (10 bytes),
SNRreception (20 bytes)
CHK
If the AMIS−49587 is not synchronized:
<STX> Length 42h 1000h I0,I1,Q1 (32 bytes), Pos (1 byte), GainSoft
(1 byte), GainHard (1 byte), R_ALC (1
byte)
CHK
TimeoutSearchInitiator
Description: This request is used to modify the value of the timeout Search Initiator. The timeout Search Initiator is set in
seconds.
Request Format:
<STX> Length
41h
1100h
TO Search Initiator (2 bytes)
CHK
Confirm Format:
<STX> Length 42h 1100h
TO Search Initiator (2 bytes)
CHK
ReadConfig
Description: This request is used to get an echo of the configuration of the AMIS−49587.
Request Format:
<STX> Length
41h
1200h
Pad (0 to 36 bytes )
CHK
Confirm Format:
<STX> Length
42h
1200h
Pad (0 to 36 bytes )
CHK
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