dsp56362 Freescale Semiconductor, Inc, dsp56362 Datasheet - Page 30

• Manufacturer Part Number: dsp56362
• Description: Dsp56362 24-bit Audio Digital Signal Processor
• Manufacturer: Freescale Semiconductor, Inc

Internal Clocks
3.6
3-4
1
2
Internal operation frequency and CLKOUT
with PLL enabled
Internal operation frequency and CLKOUT
with PLL disabled
Internal clock and CLKOUT high period
Internal clock and CLKOUT low period
Internal clock and CLKOUT cycle time with
PLL enabled
Internal clock and CLKOUT cycle time with
PLL disabled
Instruction cycle time
• With PLL disabled
• With PLL enabled and MF ≤ 4
• With PLL enabled and MF > 4
• With PLL disabled
• With PLL enabled and MF ≤ 4
• With PLL enabled and MF > 4
DF = Division Factor
Ef = External frequency
ET
MF = Multiplication Factor
PDF = Predivision Factor
T
See the PLL and Clock Generation section in the DSP56300 Family Manual for a detailed discussion of the PLL.
C
C
= internal clock cycle
= External clock cycle
Internal Clocks
Characteristics
Table 3-4 Internal Clocks, CLKOUT
DSP56362 Technical Data, Rev. 4
Symbol
I
T
T
T
CYC
T
f
f
H
C
C
L
0.49 × ET
0.47 × ET
0.49 × ET
0.47 × ET
DF/MF
DF/MF
DF/MF
DF/MF
Min
—
—
—
—
—
—
—
C
C
C
C
× PDF ×
× PDF ×
× PDF ×
× PDF ×
(Ef × MF)/(PDF × DF)
ET
Expression
C
× PDF × DF/MF
2 × ET
ET
ET
Typ
Ef/2
T
—
—
—
—
C
C
C
C
1
,
2
Freescale Semiconductor
0.51 × ET
0.53 × ET
0.51 × ET
0.53 × ET
DF/MF
DF/MF
DF/MF
DF/MF
Max
—
—
—
—
—
—
—
C
C
C
C
× PDF ×
× PDF ×
× PDF ×
× PDF ×