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ST75C530 bảng dữ liệu(PDF) 51 Page - STMicroelectronics

tên linh kiện ST75C530
Giải thích chi tiết về linh kiện  SUPER INTEGRATED DEVICESWITH DSP, AFE & MEMORIES FORTELEPHONY,MODEM, FAXOVERINTERNET& POTSLINES
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
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ST75C530 bảng dữ liệu(HTML) 51 Page - STMicroelectronics

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VIII.2.5.3 - Default Optional Status in DATA MODEM Mode (ST75C540 only)
While in Data Modem mode the format of the STAOP word is as follows :
Optional Status Words in MODEM Mode
Add.
Name
Bit
76
543
2
1
0
$0C
STAOP0
x
x
x
SPEED
(2)(5)
SPVAL
(1)(5)
$0D
STAOP1
STAQUAS
$0E
STAOP2
HSHK_PHA
$0F
STAOP3
TDT19
TDT18
TDT17
TDT16
Not Used
Notes : 1. SPVALis active in V.33 receiver only at the same time as the rising transition of the SCR1s signal. When SPVAL is set, it
indicates that the SPEED bits contain the Data speed information.
2. SPEED is valid in V.32bis, V.32, V.22bis, V.22, Bell 212A and V.33 receiver only with the following meaning :
Bit 4
Bit 3
Bit 2
Bit 1
Data Speed
0
0
1
0
1200bps
0
0
1
1
2400bps
0
1
0
0
4800bps
0
1
0
1
7200bps
0
1
1
0
9600bps
0
1
1
1
12000bps
1
0
0
0
14400bps
Other
Reserved
3. The STAOP2 Bit reflects the progression of the Synchronisation.
4. Only valid in V.21 Channel 2 Receive mode.
5. SPVALis active in V.32bis/V.32/V.22bis/V.22 at the end of the training sequence and at least 8 baud before entering Data mode.
SPVALand SPEED are also updated with each retrain and rate negotiation.
6. The SPAOP1 bits reflect the progression of the synchronization in Data modes.
VIII - STATUS DESCRIPTION (continued)
ST75C530 - ST75C540
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