ST75C530 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
ST75C530
SUPER INTEGRATED DEVICES WITH DSP, AFE & MEMORIES FORTELEPHONY, MODEM, FAX OVERINTERNET & POTS LINES
STMicroelectronics
'ST75C530' PDF : 84 Pages View PDF
ST75C530 - ST75C540
VII - COMMAND SET DESCRIPTION (continued)
Parameters When the CONF_OPER is set to F, selecting the Modem Mode of operation,the parameters
have the following meaning :
Field
Byte Pos. Value
Definition
CONF_OPER
1
3..0 1111 Select Modem Mode
CONF_ANAL
1
4
0 Normal mode
1 Analog loop back (test mode only)
CONF_PSTN
1
5
0 PSTN (carrier detect set to -43/-48dBm)
1 Leased line (carrier detect -33/-38dBm)
CONF_AO
1
6
0 Answer mode
1 Originate mode
CONF_DTINIT
1
(only in tone mode)
CONF_MODE
2
7
0 Global init of secondary tone detector
1 Partial init of secondary tone detector (8)
5..0
0 Automode (V.32bis/V.32/V.22bis/V.22) (9)
1 Bell 103 (full duplex)
2 Bell 212A (full duplex) (9)
3 V.21 (full duplex)
4 V.23 (full duplex)
5 V.22 (full duplex) (9)
6 V.22bis (full duplex) (9)
7 V.27ter
8 V.29
9 V.17
A V.32 (full duplex) (9)
B V.32bis (full duplex) (9)
C V.33 (half duplex)
D V.21 channel 2
Other Reserved
CONF_TXEQ
2
7..6
0 No transmit equalizer
1 Transmit equalizer #1
2 Transmit equalizer #2
3 Transmit equalizer #3 (V.17/V.33/V.29/V.27ter)
CONF_CAR
3
0
0 1800Hz carrier (V.17/V.33 only)
1 1700Hz carrier (V.17/V.33 only)
CONF_TCM
CONF_SP0
CONF_SP1
3
1
0 Treillis coding not allowed (V.32 only)
1 Treillis coding allowed (V.32bis, V.32)
3
7..4 xxx1 1200bps allowed (V.22, V.22bis) (10)
xx1x 2400bps allowed (V.22bis, V.27) (10)
x1xx 4800bps allowed (V.32bis, V.32, V.27, V.29) (10)
1xxx 7200bps allowed (V.32bis, V.29, V.17) (10)
4
2..0
xx1 9600bps allowed (V.32bis, V.32, V.29, V.17) (10)
x1x 12000bps allowed (V.32bis, V.17, V.33) (10)
1xx 14400bps allowed (V.32bis, V.17, V.33) (10)
Notes :
8. With conf 80 00 00 00 the coefficients of secondary tone detectors are not initialized.
9. ST75C540 only.
10. V.22bis, V.22, V.32bis and V.32 modes ST75C540 only.
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