MPC93R52 Datasheet, PDF (7/16 Pages) Motorola, Inc – LOW VOLTAGE 3.3V LVCMOS 1:11 CLOCK GENERATOR

MPC93R52
Example Configurations for the MPC93R52
Figure 3. MPC93R52 Default Configuration
fref = 100 MHz
CCLK
QA0
QA1
QA2
QA3
FB_IN
QA4
FSELA
QB0
QB1
FSELB
QB2
FSELD
QB3
F_RANGE
QC0
QC1
MPC93R52
100 MHz (Feedback)
100 MHz
100 MHz
200 MHz
MPC93R52 default configuration (feedback of QB0 = 100
MHz). All control pins are left open.
Frequency range
Input
QA outputs
QB outputs
QC outputs
Min
50 MHz
50 MHz
50 MHz
100 MHz
Max
120 MHz
120 MHz
120 MHz
240 MHz
Figure 4. MPC93R52 Zero Delay Buffer Configuration
fref = 62.5 MHz
VCC
CCLK
QA0
QA1
QA2
QA3
FB_IN
QA4
FSELA
FSELB
QB0
QB1
QB2
FSELC
QB3
F_RANGE
QC0
QC1
MPC93R52
62.5 MHz (Feedback)
62.5 MHz
62.5 MHz
62.5 MHz
MPC93R52 zero–delay (feedback of QB0 = 62.5 MHz).
All control pins are left open except FSELC = 1. All out-
puts are locked in frequency and phase to the input clock.
Frequency range
Input
QA outputs
QB outputs
QC outputs
Min
50 MHz
50 MHz
50 MHz
50 MHz
Max
120 MHz
120 MHz
120 MHz
120 MHz
Figure 5. MPC93R52 Default Configuration
fref = 33.3 MHz
VCC
VCC
VCC
CCLK
QA0
QA1
QA2
QA3
FB_IN
QA4
FSELA
QB0
QB1
FSELB
QB2
FSELC
QB3
F_RANGE
QC0
QC1
MPC93R52
33.3 MHz (Feedback)
33.3 MHz
50 MHz
100 MHz
MPC93R52 configuration to multiply the reference frequen-
cy by 3, 3÷2 and 1. PLL feedback of QA4 = 33.3 MHz.
Frequency range
Input
QA outputs
QB outputs
QC outputs
Min
25 MHz
50 MHz
50 MHz
100 MHz
Max
60 MHz
120 MHz
120 MHz
240 MHz
Figure 6. MPC93R52 Zero Delay Buffer Config. 2
fref = 33.3 MHz
VCC
VCC
CCLK
QA0
QA1
QA2
QA3
FB_IN
QA4
FSELA
QB0
QB1
FSELB
QB2
FSELC
QB3
F_RANGE
QC0
QC1
MPC93R52
33.3 MHz (Feedback)
33.3 MHz
33.3 MHz
33.3 MHz
MPC93R52 zero–delay (feedback of QB0 = 33.3 MHz).
Equivalent to Table 2 except F_RANGE = 1 enabling a
lower input and output clock frequency.
Frequency range
Input
QA outputs
QB outputs
QC outputs
Min
25 MHz
25 MHz
25 MHz
25 MHz
Max
60 MHz
60 MHz
60 MHz
60 MHz
TIMING SOLUTIONS
7
MOTOROLA