- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄373716 > TS7514 (意法半導(dǎo)體) Programmable V.23 Modem with DTMF(可編程V.23調(diào)制解調(diào)器帶雙音多頻) PDF資料下載
參數(shù)資料
| 型號： | TS7514 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Programmable V.23 Modem with DTMF(可編程V.23調(diào)制解調(diào)器帶雙音多頻) |
| 中文描述： | 可編程.23調(diào)制解調(diào)器的雙音多頻（可編程.23調(diào)制解調(diào)器帶雙音多頻） |
| 文件頁數(shù)： | 7/19頁 |
| 文件大?。?/td> | 169K |
| 代理商： | TS7514 |
CARRIER LEVELDETECTOR
- OutputLevel Detectionconditions
The DCD signal detector output is set to logic
state 0 ifthe RMS value of thedemodulatorinput
signal is greater than N1. The DCD output has
logic state 1 if theRMS value is less thanN2.
The detector has an hysteresiseffect: N1 - N2.
- Timing Detection Requirements
Signal detection time constants at the DCD out-
put complywith CCITTRecommendationV.23.
ModulationRatio
1200bps
DCD Transition
t1
t2
t1
t2
CCITT V.23 (min)
10
5
0
15
Min.
10
5
15
15
Max.
20
15
40
40
CCITT V.23 (max)
20
15
80
80
Unit
ms
ms
ms
ms
75bps (Note 1)
Note 1 :
wide band Rx filter used (see Figure 7c).
N1
0V
N1
LINE
DCD
t
2
t
1
Note :
When delays are bypassed (seeRPRX register programming) response time ranges from 0 to 5ms in receivemode at 1200bps,
and from 0 to10ms at 75bps.
7
Figure 4 :
SignalDetectionTime Out
PROGRAMMING REGISTER
(RPROG)
Address
D6
Data
Selected Mode
(note 1)
D7
D5
D4
D3
D2
D1
D0
X
0
0
0
0
0
X
X
0
1
0
1
The most significantbit (D7) is not used when decoding control
register addresses.
0
0
0
X
X
0
0
1
X
1
0
X
Controlregisteraddressing isenabled whenD7= 0(seenote2).
Controlregisteraddressing isenabled whenD7= 1(seenote2).
Receptionpositionedinthechanneloppositetothe transmission
channel controlled by MC/BC
0
1
X
X
Reception positioned in the same channel as transmission
(see note 3).
Programming inhibited in normal operating mode. This mode is
used for testing purposes.
1
X
X
X
Notes :
1. RPROG is setto 0000 on power-up.
2. Excepted for RPROG register whose address is always 000, regardless of D0 and D1.
3. This mode allows either full duplex operation on a 4-wire line, or circuit testing with external Tx/Rx loopback.
TS7514
7/19
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TS7515 | SINGLE CHIP DPSK AND FSK MODEM |
| TS7515CP | SINGLE CHIP DPSK AND FSK MODEM |
| TS7515IP | SINGLE CHIP DPSK AND FSK MODEM |
| TS7792 | AM/FM 1 CHIP TUNER SYSTEM IC (1.5V USE) |
| TS7792F | AM/FM 1 CHIP TUNER SYSTEM IC (1.5V USE) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TS7514CFN | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:PROGRAMMABLE V.23 MODEM WITH DTMF |
| TS7514CP | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:PROGRAMMABLE V.23 MODEM WITH DTMF |
| TS7515 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:SINGLE CHIP DPSK AND FSK MODEM |
| TS7515CP | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:SINGLE CHIP DPSK AND FSK MODEM |
| TS7515IP | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:SINGLE CHIP DPSK AND FSK MODEM |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。