DSPB56364FU100 Freescale Semiconductor, DSPB56364FU100 Datasheet - Page 82

• Manufacturer Part Number: DSPB56364FU100
• Manufacturer: Freescale Semiconductor

Specifications of DSPB56364FU100

• Device Core Size: 24b
• Format: Fixed Point
• Clock Freq (max): 100MHz
• Mips: 100
• Device Input Clock Speed: 100MHz
• Ram Size: 9KB
• Program Memory Size: 24KB
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3.14V
• Operating Supply Voltage (max): 3.46V
• Operating Temp Range: -40C to 105C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 100
• Package Type: LQFP
• Lead Free Status / Rohs Status: Not Compliant

PLL Performance Issues
A benchmark power consumption test algorithm is listed in
algorithm, specific test current measurements, and the following equation to derive the current per MIPS
value.
where:
5.4
The following explanations should be considered as general observations on expected PLL behavior.
There is no testing that verifies these exact numbers. These observations were measured on a limited
number of parts and were not verified over the entire temperature and voltage ranges.
5.4.1
The allowed jitter on the frequency of EXTAL is 0.5%. If the rate of change of the frequency of EXTAL
is slow (i.e., it does not jump between the minimum and maximum values in one cycle) or the frequency
of the jitter is fast (i.e., it does not stay at an extreme value for a long time), then the allowed jitter can be
2%. The phase and frequency jitter performance results are only valid if the input jitter is less than the
prescribed values.
5-4
PLL Performance Issues
I
I
F2
F1
typF2
typF1
Input (EXTAL) Jitter Requirements
F1 should be significantly less than F2. For example, F2 could be 66 MHz
and F1 could be 33 MHz. The degree of difference between F1 and F2
determines the amount of precision with which the current rating can be
determined for an application.
= current at F2
= current at F1
= high frequency (any specified operating frequency)
= low frequency (any specified operating frequency lower than F2)
I MIPS
⁄
DSP56364 Technical Data, Rev. 4.1
=
I MHz
⁄
NOTE
=
(
I
typF2
Appendix A, "IBIS
–
I
typF1
)
⁄
(
F2 F1
–
Model". Use the test
)
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