DSP56371 View Datasheet(PDF) - Motorola => Freescale

Part Name

Description

Manufacturer

DSP56371

DSP56371 is a high density CMOS device

Motorola => Freescale 

Freescale Semiconductor, Inc.

AC Electrical Characteristics

6.0 AC Electrical Characteristics

The timing waveforms shown in the AC electrical characteristics section are tested with a VIL maximum of

0.8V and a VIH minimum of 2.0V for all pins. AC timing specifications, which are referenced to a device

input signal, are measured in production with respect to the 50% point of the respective input signal’s

transition. DSP56371 output levels are measured with the production test machine VOL and VOH reference

levels set at 1.0V and 1.8V, respectively.

NOTE: Although the minimum value for the frequency of EXTAL is 0 MHz (PLL bypassed), the

device AC test conditions are 5 MHz and rated speed.

7.0 Internal Clocks

No.

Characteristics

1 Comparison Frequency

2 Input Clock Frequency

3 Output clock Frequency

(with PLL enabled[2] [3]

Table 4 INTERNAL CLOCKS

Symbol Min

Fref[1]

5

FIN

FOUT

75

Typ

Max UNIT

Condition

--

Fref*NR

(1000/Etc × MF x

FM)/

(PDF × DF x OD)

20 MHZ

Fref = FN/NR

NR is input divider

value

-- MHZ FOUT=FVCO/NO

where NO is output

divider value

4 Output clock Frequency

(with PLL disabled[2] [3]

5 Duty Cycle

FOUT

--

--

40

1000/Etc

--

50

60

Note:

1. See users manual for definition.

2. DF = Division Factor

Ef = External frequency

MF = Multiplication Factor

PDF = Predivision Factor

FM= Feedback Multiplier

OD = Output Divider

3. Maximum frequency will vary depending on the ordered part number.

MHZ

---

% FVCO=300MHZ~60

0MHZ

MOTOROLA

DSP56371 Technical Data

5

For More Information On This Product,

Go to: www.freescale.com

Share Link: