PSB21473FV13XT Infineon Technologies, PSB21473FV13XT Datasheet - Page 407

• 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

effect that the tone lengths are half the programmed time and the tone frequencies are
double the programmed frequencies.
20.1.13
The peak detector is usually not used in normal operation. It provides, however, an easy
means to verify the minimum or maximum signal level of any signal S
D. The peak detector stores either the maximum or the minimum signal value of the
observed signal I
Therefore it is not only possible to determine the absolute level of the signal but it can
also be checked whether a DC offset is present. This can be done by first scanning for
the maximum and then for the minimum value. If the minimum value is not
(approximately) the negated positive value then a DC offset is present. The peak
detector should be disabled if not needed.
Figure 20-28 Peak Detector - Block Diagram
The register PDDATA gives the maximum or minimum integer depending on the mode
selected by bit MM. As an example it may be assumed that the detection of the maximum
is selected. Then with enabling the detector and with each read access to register
PDDATA, PDDATA is set to the smallest possible value, which is the negative maximum
integer. With each new maximum detected on signal I1, this maximum is provided by
PDDATA.
•
Table 20-26 Peak Detector Registers
Register
PDCTL
PDCTL
PDCTL
PDDATA
Data Sheet
Peak Detector
# of Bits
1
1
5
16
1
in the register PDDATA since the last read access to this register.
Name
EN
MM
I1
I
1
Comment
Peak Detector Enable
Minimum/Maximum selection
Input signal selection
Min/Max signal value since last read access
Detector
407
Peak
Digital Signal Processor
i
within the INCA-
PSB 21473
2003-03-31
INCA-D