|
|
PDF TCC110 Data sheet ( Hoja de datos )
| Número de pieza | TCC110 | |
| Descripción | Caller ID on Call Waiting Receiver | |
| Fabricantes | Telechips | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de TCC110 (archivo pdf) en la parte inferior de esta página. Total 34 Páginas | ||
|
No Preview Available !
TCC110wwwS.pDeatcaiSfihceaett4ioUn.csom– June 2001
Caller-ID on Call Waiting (CIDCW) Receiver
June 2001
TCC110
CIDCW receiver
Specifications
FEATURES
1200 baud FSK (Frequency Shift Keying)
demodulator with sensitivity –38dBm (in 600Ω)
conforms to Bell 202 and CCITT V.23 standards
Receive sensitivity of –32dBm (in 600Ω) for CAS
( CPE Alerting Signal )
Progress Tone Energy (PTE) detector with
sensitivity of –27dBm
Ring or Line Reversal detector
Ring Frequency measurement
Line voltage measurement
DTMF generator with gain controller for all 16
characters
On-hook and off-hook applications according to
Bellcore TR-NWT-000030 and SR-TSV-002476
specifications
Compatible with ETSI standards ETS 300 659-1
and ETS 300 659-2
3V ~ 5V operation
On-chip 3.579545MHz crystal oscillator
Power-down mode
24-pin SOP package
0.5um CMOS triple metal process
APPLICATIONS
Bellcore CID and CIDCW systems
CID and CIDCW feature phones and adjunct
boxes
Computer Telephony Integrated systems
Voice-Mail Equipment
DTMFO
VREF1
VREF
IN S
IN P
IN N
OUT
IN D
VCCA
VCCD
VCCD
Power Supply
C irc u it
D/A Converter
DTMF
G e ne ra to r
ADC
ADC
BandPass
F ilte r
BandPass
F ilte r
R in g
D e te c to r
Line Reversal /
Ring Detector
G ain
C o n tro lle r
FSK Receiver
CAS Detector
Progress Tone
Energy Detector
Frequency
Counter
DC voltage
m easurem ent
C ry s ta l
O scillator
Mode
C o ntro l
&
S e rial
Interface
VSSA VSSA VSSD VSSD
L R IN
TEST TESTout
RESET
X IN
XOUT
SDT
SCK
IN T
GENERAL DESCRIPTION
The TCC110 is a low power CMOS device used for receiving physical layer signals like Bellcore's CPE Alerting
Signal (CAS) and similar evolving systems. This device also meets the requirements of emerging Calller ID on
Call Waiting (CIDCW) services. In addition, two different signal inputs are available to support Tip/Ring and Hybrid
connectivity. The device also includes a 1200 baud Bell 202/V.23 compatible FSK data demodulator, a ring or line
reversal detector, a Progress Tone Energy detector, a DTMF generator and a DC line voltage level measurement
unit. The status of the TCC110, the received FSK data, the ring frequency and other received information can be
read and control options can be written via the serial interface. An on-chip 3.579545MHz oscillator is available. In
power-down mode only the ring or line reversal detector can be active. The operating voltage is 3V ~ 5V and the
device is available in a 24-pin SOP package.
www.telechips.com
Page 1 / 34
Tel: 82-2-3443-6792
1 page  
wwwS.pDeatcaiSfhiceaett4iUo.ncosm– June 2001
4. FUNCTION DESCRIPTION
TCC110
CIDCW receiver
4.1 Analog input and preprocessor
The preprocessor for the FSK receiver and the CAS, the PTE detectors, comprises two input signal buffers, an
Analog-to-Digital Converter (=ADC1) and digital bandpass filters. Bandpass filters are used to attenuate out band
noise and interfering signals, which might otherwise reach the FSK receiver and CAS, PTE detectors. The CAS
and PTE detectors share a single digital filter while the FSK receiver has its own separate filter.
To measure the DC voltage of the telephone line, a DC input buffer and another Analog-to-Digital Converter
(=ADC2) are used. The TCC110 can be forced into a power-down state by switching off the 3.579545 MHz
system clock and all ADC’s and op-amps.
4.1.1 Differential input buffer
The differential input buffer is used to convert the balanced telephone line signal to the input signal of ADC1 in the
TCC110.
Tip/A
Ring/B
C1a
C1b
R1a
R1b
R2
R4
C2a R3
INp
+
INn -
C2b
OUT
VREF
Figure 3. Differential input buffer of the TCC110
toADC1
TCC110
Design equations for this buffer are;
The differential voltage gain = R4/R1b.
R1a = R1b
C1a = C1b
R2 = R3 * R4 / (R3 + R4)
The target differential voltage gain should be adjusted to obtain the expected signal level at the ‘OUT’ pin.
www.telechips.com
Page 5 / 34
Tel: 82-2-3443-6792
5 Page 
wwwS.pDeatcaiSfihceaett4ioUn.csom– June 2001
Table 5: DTMF frequencies code table
D3 D2 D1 D0 Character
00 0 1 1
00 1 0 2
00 1 1 3
01 0 0 4
01 0 1 5
01 1 0 6
01 1 1 7
10 0 0 8
10 0 1 9
10 1 0 0
10 1 1 *
11 0 0 #
11 0 1 A
11 1 0 B
11 1 1 C
00 0 0 D
TCC110
CIDCW receiver
Low frequency
697.0Hz
697.0Hz
697.0Hz
770.0Hz
770.0Hz
770.0Hz
852.0Hz
852.0Hz
852.0Hz
941.0Hz
941.0Hz
941.0Hz
697.0Hz
770.0Hz
852.0Hz
941.0Hz
High frequency
1209Hz
1336Hz
1477Hz
1209Hz
1336Hz
1477Hz
1209Hz
1336Hz
1477Hz
1336Hz
1209Hz
1477Hz
1633Hz
1633Hz
1633Hz
1633Hz
4.5 Ring or line reversal detector
For ring or line reversal detection, some external components are needed to generate a pulse each time a ring or
line reversal occurs, as shown in Figure 11. Interrupt generation of the ring or line reversal detector is controlled
by the LRenable bit in the Function register. When LRenable is set to ‘1’, the LRint bit of the interrupt register
will be set and interrupts will be generated at every transition of the LRstatus bit. When LRenable is ‘0’, interrupts
will not generated.
The LRstatus bit ( reset value is high) in the Status register is cleared to ‘0’ at any positive edge of the LRin. If no
positive edges of LRin are detected in Tguard time the LRstatus bit is set to ‘1’. The LRint bit is cleared when the
Interrupt register is read.
T ip /A
C2 R8
R ing/B
D5
P1
R11
LR in
to R ing/
Line
reversal
d e te c to r
TCC120
Figure 11. External component to generate LRin
If an LRint interrupt has been generated in power-down mode, it is recommended to disable power-down mode to
www.telechips.com
Page 11 / 34
Tel: 82-2-3443-6792
11 Page | ||
| Páginas | Total 34 Páginas | |
| PDF Descargar | [ Datasheet TCC110.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| TCC110 | Caller ID on Call Waiting Receiver | Telechips |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |