PSB21473FV13XT Infineon Technologies, PSB21473FV13XT Datasheet - Page 435

• 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

26
No reset value.
MIN
The parameter MIN for a minimal signal level L (dB) can be calculated by the following
formula:
Value range: [0x0000..0x7FFF] = [-96.3dB..0.03dB]
27
No reset value.
ATT
The parameter ATT for an externally provided attenuation A (dB) can be calculated by
the following formula:
Value range: [0x0000..0x7FFF] = [0dB..96.3dB]
ATT has a slightly different meaning in normal and in superior mode. In normal mode, it
represents just the externally provided attenunation while in superior mode, it represents
the externally provided attenuation minus a threshold. The formula above holds in both
cases.
In superior mode, the parameter ATT is implemented in two’s complement.
In normal mode, the parameter ATT is not allowed to be negative, i.e., the MSB (bit 15)
must be 0.
Data Sheet
15
15
0
0
H
H
LECLEV
LECATT
Minimal Signal Level for Line Echo Cancellation
Externally Provided Attenuation
MIN
ATT
=
512
----------------------------------------- -
=
435
--------------------
5 log2
512 A
5
ATT
MIN
96.3
log2
+
L
Digital Signal Processor
PSB 21473
2003-03-31
INCA-D
0
0