參數(shù)資料
型號(hào)： ST75C530FP-A
廠商： 意法半導(dǎo)體
英文描述： SUPER INTEGRATED DEVICESWITH DSP, AFE & MEMORIES FORTELEPHONY,MODEM, FAXOVERINTERNET& POTSLINES
中文描述： 超級(jí)綜合DEVICESWITH數(shù)字信號(hào)處理器，模擬前端
文件頁數(shù)： 48/84頁
文件大?。?/td> 599K
代理商： ST75C530FP-A
VIII.2.5.2- DefaultOptional Status in Fax Mode
While in Fax Modemmode the formatof the STAOPword is as follows:
Optional Status Words in MODEM Mode
Add.
Name
Bit
7
6
5
4
3
SPEED
(2)(5)
2
1
0
$0C
STAOP0
x
x
x
SPVAL
(1)(5)
$0D
STAOP1
STAQUAS
$0E
STAOP2
PNSUCs
PRDETs
PNDETs
SCR1s
PRs
PNs
DTMF_DIGIT
(4)
P2s
P1s
$0F
STAOP3
TDT19
TDT18
TDT17
TDT16
Notes : 1. SPVALis active in V.33receiver only atthesame time as the risingtransition oftheSCR1s signal. When SPVAL is set, it indicates
that the SPEED bits containthe Data speed information.
2. SPEED is valid in V.33 receiver only it can have 2 values, after the SCR1s signal goes high : 1000 for 14400bps and 0111 for
12000bps.
3. The STAOP2Bit reflects the progression of the Synchronisation.
4. Only valid in V.21 Channel2 Receive mode.
The STAOP2 Bits have the following meanings:
STAOP2 in Fax Modem Mode
Name
P1s
P2s
PNs
PRs
SCR1s
PNDETs
PRDETs
PNSUCs
Position
0
1
2
3
4
5
6
7
Description
Unmodulated carrier sequence. Optional, used for echo protection.
Continuous 180
°
phase reversal sequence
Equalizer trainning sequence
V.33 and V.17 rate sequence
Continuous scrambled 1 sequence
Turned on after PN sequence detection
Turned on after PR sequence detection (V.33 and V.17 only)
Turned on after succesfull training of the receive equalizer. When on at the endof the
synchronization, the transmition BER is statisticaly bellow 10ppm.
VIII - STATUS DESCRIPTION
(continued)
ST75C530 - ST75C540
48/84
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