WITH DTMF. TS7514 Datasheet


TS7514 DTMF. Datasheet pdf. Equivalent


Part Number

TS7514

Description

PROGRAMMABLE V.23 MODEM WITH DTMF

Manufacture

STMicroelectronics

Total Page 19 Pages
Datasheet
Download TS7514 Datasheet


TS7514
TS7514
PROGRAMMABLE V.23 MODEM WITH DTMF
. PROGRAMMABLE MODES :
- Modem 75bps transmit, 1200bps receive
- Modem 1200bps transmit, 75bps receive
- DTMF dialing
- Call status tone detection
. - Auxiliary analog transmit input
- Analog test loopback
PROGRAMMABLE FUNCTIONS :
- Transmission level
- Hysteresis and detection level
- Filters (reception and transmission)
........ - Line monitoring and buzzer
- DTMF frequencies
FIXED COMPROMISE LINE EQUALIZER
AUTOMATIC BIAS ADJUSTMENT
INTEGRATED DUPLEXER
STANDARD LOW COST CRYSTAL (3.579MHz)
TAX TONE REJECTION
POWER-UP INITIALIZATION OF REGISTERS
OPERATES FROM ±5V
CMOS
DIP24
(Plastic Package)
PLCC28
(Plastic Leaded Chip Carrier Package)
on a 4-wire line. Its programming concept makes it
the ideal component to design low-cost intelligent
modems, featuring auto dialing and auto answer-
ing. The TS7514 conforms to CCITT V.23 recom-
mendation. The chip incorporates DTMF dialing,
line monitoring, tone and dialing detection.
DESCRIPTION
The TS7514 is an FSK modem which can be
programmed for asynchronous half-duplex voice-
band communications on a 2-wireline or full duplex
ORDER CODES
Part Number
TS7514CP
TS7514CFN
Temperature Range
0 to 70oC
0 to 70oC
Package
DIP24
PLCC28
PIN CONNECTIONS
DIP24
MOD/DTMF
MC/BC
RTS
ENP
DGND
TxD
PRD
XTAL IN
XTAL OUT
DCD
RxD
ZCO
1
2
3
4
5
6
7
8
9
10
11
12
24 AXTL
23 WLO
22 ATO
21 V+
20 AGND
19 V-
18 RAO1
17 RAI1
16 RAI2
15 RAO2
14 RFO
13 RDI
PLCC28
ENP
DGND
TxD
PRD
N/C
XTAL IN
XTAL OUT
5
6
7
8
9
10
11
25 V+
24 AGND
23 V-
22 RAO1
21 RAI1
20 RAI2
19 N/C
November 1998
1/19

TS7514
TS7514
PIN DESCRIPTION
Name
MOD/DMTF
MC/BC
RTS
ENP
DGND
TxD
PRD
XtaIIN
XtaIOUT
DCD
RxD
ZCO
RDI
RFO
RAO2
RAI2
RAI1
RAO1
V-
AGND
V+
ATO
WLO
ATxI
Pin Number
DIP24 PLCC28
11
23
34
45
56
67
78
8 10
9 11
10 13
11 14
12 15
13 16
14 17
15 18
16 20
17 21
18 22
19 23
20 24
21 25
22 26
23 27
24 28
Description
MODEM or DMTF Operating Mode Selection.
Also controls write operations to control registers (if MOD/DMTF = 0 and
MC/BC = 0).
Digital Control Input.
In MODEM mode, it sets transmission mode to main or back channel. It also
permits selection of dialing or control registers programming.
Request to Send.
When RTS = 0, the circuit sends an analog signal to the ATO output. The signal
depends on the operating mode selected.
When RTS = 1, the signal sent to ATO is suppressed after its first zero crossing.
When MOD/DMTF = 0 and MC/BC = 0, the RTS pin acts as a clock for serial
data loading into the input register.
Serial Register Write Select Input. When ENP = 0, the serial register input is
connected to TxD. When ENP = 1, the register input is connected to PRD.
Digital Ground = 0V. All digital signals are referenced to this pin.
Digital Input for Transmit or Control Data
Digital Input for Control Data. Selected through ENP
Crystal Oscillator Input. Can be tied to an external clock generator.
fQUARTZ = 3.579MHz.
Crystal Oscillator Output
Data Carrier Detect Output
Digital Receive Data Output
Zero Crossing Rx Digital Output (ringing detection)
Analog Output for the Receive Signal after Filtering or Analog Input for the
Amplifier-limiter.
Analog Receive Filter Output
A2 Amplifier Output
A2 Amplifier Inverting Input
A1 Amplifier Inverting Input
A1 Amplifier Output
Negative Supply Voltage : – 5V ±5%
Analog Ground = 0 V. Reference Pin for Analog Signals
Positive Supply Voltage : + 5V ±5%
Analog Transmit Output
Analog Output for Line Monitoring and Buzzer
Direct Analog Input Transmit Filter
2/19


Features TS7514 PROGRAMMABLE V.23 MODEM WITH DTMF . . . . . . . . . . PROGRAMMABLE MOD ES : - Modem 75bps transmit, 1200bps re ceive - Modem 1200bps transmit, 75bps r eceive - DTMF dialing - Call status ton e detection - Auxiliary analog transmit input - Analog test loopback PROGRAMMA BLE FUNCTIONS : - Transmission level - Hysteresis and detection level - Filter s (reception and transmission) - Line m onitoring and buzzer - DTMF frequencies FIXED COMPROMISE LINE EQUALIZER AUTOMA TIC BIAS ADJUSTMENT INTEGRATED DUPLEXER STANDARD LOW COST CRYSTAL (3.579MHz) T AX TONE REJECTION POWER-UP INITIALIZATI ON OF REGISTERS OPERATES FROM ±5V CMOS DIP24 (Plastic Package) PLCC28 (Plas tic Leaded Chip Carrier Package) on a 4-wire line. Its programming concept ma kes it the ideal component to design lo w-cost intelligent modems, featuring au to dialing and auto answering. The TS75 14 conforms to CCITT V.23 recommendatio n. The chip incorporates DTMF dialing, line monitoring, tone and dialing detection. ORDER CODES TS7514C.
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