DSP56321VF275 Freescale, DSP56321VF275 Datasheet - Page 24

• Manufacturer Part Number: DSP56321VF275
• Manufacturer: Freescale

Specifications of DSP56321VF275

• Device Core Size: 24b
• Format: Fixed Point
• Clock Freq (max): 275MHz
• Mips: 275
• Device Input Clock Speed: 275MHz
• Ram Size: 576KB
• Operating Supply Voltage (typ): 1.6/3.3V
• Operating Supply Voltage (min): 1.5/3/3/3/3/3/3V
• Operating Temp Range: -40C to 100C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 196
• Package Type: MA-BGA
• Lead Free Status / RoHS Status: Not Compliant

Specifications
2.4.2
The DSP56321 system clock is derived from the on-chip oscillator or is externally supplied. To use the on-chip
oscillator, connect a crystal and associated resistor/capacitor components to EXTAL and XTAL; an example is
shown in Figure 2-1
2-4
Internal clock low period
•
•
Note:
No.
1
2
3
With DPLL disabled
With DPLL enabled
Frequency of EXTAL
(EXTAL Pin Frequency)
•
•
EXTAL input high
•
•
EXTAL input low
•
•
With DPLL disabled
With DPLL enabled
With DPLL disabled
(46.7%–53.3% duty
cycle
With DPLL enabled
(42.5%–57.5% duty
cycle
With DPLL disabled
(46.7%–53.3% duty
cycle
With DPLL enabled
(42.5%–57.5% duty
cycle
Ef = External frequency; MF = Multiplication Factor = MFI + MFN/MFD; PDF = Predivision Factor;
DF = Division Factor; T
T
Characteristics
L
= Internal clock low
Characteristics
C
External Clock Operation
EXTAL
4
4
4
4
)
)
)
)
Fundamental Frequency
Crystal Oscillator
4
3
.
XTAL1
R
2
1
C
XTAL
= Internal clock cycle; ET
DEFR = PDF
Symbol
× PDFR
ET
ET
C
Ef
H
L
Table 2-4.
Figure 2-1.
Table 2-5.
Symbol
DSP56321 Technical Data, Rev. 11
Suggested Component Values:
f
R = 1 MΩ ± 10%
C = 10 pF ± 10%
Calculations are for a 16–32 MHz crystal with the following parameters:
•
•
•
OSC
Note: Make sure that in the PCTL Register:
•
16 MHz
2.34 ns
2.13 ns
2.34 ns
2.13 ns
T
0 MHz
L
Min
shunt capacitance (C
series resistance of 5–15 Ω, and
drive level of 2 mW.
XTLD (bit 2) = 0
= 16–32 MHz
200 MHz
C
Internal Clocks (Continued)
= External clock cycle; T
200 MHz
200 MHz
External Clock Operation
Crystal Oscillator Circuits
35.9 ns
35.9 ns
Max
∞
∞
0.49 × T
Min
—
16 MHz
2.12 ns
1.93 ns
1.93 ns
2.12ns
0 MHz
0
Min
) of 5.2–7.3 pF,
C
220 MHz
220 MHz
220 MHz
35.9 ns
35.9 ns
H
Max
= Internal clock high;
∞
∞
Expression
16 MHz
1.95 ns
1.77 ns
1.95 ns
1.77 ns
0 MHz
Typ
Min
ET
—
C
240 MHz
240 MHz
240 MHz
35.9 ns
35.9 ns
Max
∞
∞
Freescale Semiconductor
16 MHz
1.70 ns
1.55 ns
1.70 ns
1.55 ns
0 MHz
Min
0.51 × T
275 MHz
Max
—
275 MHz
275 MHz
35.9 ns
35.9 ns
C
Max
∞
∞