PSB21473FV13XT Infineon Technologies, PSB21473FV13XT Datasheet - Page 397

• Manufacturer Part Number: PSB21473FV13XT
• Manufacturer: Infineon Technologies

Specifications of PSB21473FV13XT

• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3.135V
• Operating Supply Voltage (max): 3.6V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 144
• Lead Free Status / RoHS Status: Compliant

•
Figure 20-19 DTMF Detector - Block Diagram
Table 20-15 to 20-17 show the associated registers.
Table 20-15 DTMF Detector Control Register
Register # of Bits
DDCTL
DDCTL
As soon as a valid DTMF tone is recognized, the status word and the DTMF tone code
are updated (table 20-16).
Table 20-16 DTMF Detector Results
Register
PIDDSTAT 1
DDCTL
DTV is set when a DTMF tone is currently recognized and cleared when no DTMF tone
is recognized or the detector is disabled. The code for the DTMF tone is provided in
register DDCTL. DTC is valid when DTV is set and until the next incoming DTMF tone.
The registers DDTW and DDLEV contain the parameters for detection (table 20-17) .
Table 20-17 DTMF Detector Parameters
Register
DDTW
DDLEV
20.1.6
The DTMF generator can generate single or dual tones with programmable frequency
and gain. This unit is primarily used to generate the common DTMF tones but can also
be used for signalling or other user defined tones. A block diagram is shown in figure 20-
20.
Data Sheet
1
5
DTMF Generator
# of Bits
5
# of Bits
15
6
Name
EN
I1
Name
DTV
DTC
Name
TWIST
MIN
I
1
Comment
DTMF detector enable
Input signal selection
Detector
Comment
DTMF code valid
DTMF tone code
DTMF
Comment
Twist for DTMF recognition
Minimum signal level to detect DTMF tones
397
PIDD
Digital Signal Processor
PSB 21473
2003-03-31
INCA-D