TDA5230XT Infineon Technologies, TDA5230XT Datasheet - Page 60

• Manufacturer Part Number: TDA5230XT
• Manufacturer: Infineon Technologies

Specifications of TDA5230XT

• Operating Temperature (min): -40C
• Operating Temperature (max): 105C
• Operating Temperature Classification: Industrial
• Product Depth (mm): 4.4mm
• Product Length (mm): 9.7mm
• Lead Free Status / Rohs Status: Compliant

2) Calculation of usable Wake Up Pattern Time:
The Wake Up Pattern time is the minimal duration of wake up patterns.
T
T
T
T
3) Calculation of the Master Period
T
shorter. In our example:
T
Calculation of the On Time
In Fast Fall Back to Sleep Wake Up Mode, the On Time limits the search for a Wake Up
Criteria for all used channels in both configurations. Therefore the On Time is the sum
of On Time for all used channels and configurations.
T
+3.98 ms +3.98 ms =14.55 ms
Note: Different to Constant On/Off Time, a longer On Time as calculated will typically not
increase power consumption.
Calculation of the Off Time
The Off Time is the Master Period minus the On Time.
T
Note: Use the TDA523x IAF Configuration Tool to translate the calculated values into
register settings. Enter On and Off Time as calculated. Watch the Master Period and
vary Off Time till the resulting Master Period is shorter than the result of the calculation.
Take care that T
calculated values!
2.4.6.4
This mode combines Constant On/Off Time for Configuration A and Fast Fall Back to
Sleep for Configuration B. The next figure shows the same scenarios as seen earlier, but
now for Mixed Mode.
Data Sheet
Wakeup_PatternA
Wakeup_PatternB
usable_Wakeup_PatternA
usable_Wakeup_PatternB
MasterPeriod
MasterPeriod
ON_
OFF
>T
=T
WakeUp_ConfigAChannel1..3
MasterPeriod
<T
Mixed Mode (Constant On/Off Time & Fast Fall Back to Sleep)
is smaller then T
usable_Wakeup_PatternA
=Wake Up Pattern/(Data Rate*tolerance)=2000/(10 kb/s*1.1)=181.81 ms
=2000/(10 kb/s*1.1)=363.62ms
-T
ON
ON
=T
=T
=179.26 ms-14.55 ms=164.71 ms
must be always longer and T
Wakeup_PatternA
Wakeup_PatternB
+T
WakeUp_ConfigBChannel1..2
usable_Wakeup_PatternA
=179.26 ms
-T
-T
WakeUp_ConfigAChannel1
WakeUp_ConfigBChannel1
56
or T
=2.55 ms+2.02 ms+2.02 ms+
MasterPeriod
usable_Wakeup_PatternB
=181.81ms-2.55ms=179.26 ms
=363.62ms-3.98ms=359.64 ms
always shorter than the
Functional Description
Version 4.0, 2007-06-01
whichever is
TDA523x