mc145220 Freescale Semiconductor, Inc, mc145220 Datasheet - Page 2

• Manufacturer Part Number: mc145220
• Description: Dual Frequency Synthesizer
• Manufacturer: Freescale Semiconductor, Inc

MC145220
2
REF out
REF in
ENB
CLK
PIN 9 = V+ (Positive Power to the main PLL, Reference Circuit, and a portion of the Serial Port)
PIN 6 = GND (Ground to the main PLL, Reference Circuit, and a portion of the Serial Port)
PIN 12 = V+ (Positive Power to PLL and a portion of the Serial Port)
PIN 15 = GND (Ground to PLL and a portion of the Serial Port)
D in
f in
f in
f in
f in
8
7
2
1
13
14
11
20
19
CONTROL
BUFFER
AND
3
SHIFT REGISTER
24 1/2 STAGE
23
16
23
PRESCALER
PRESCALER
32/33 OR
23
(INTERNAL)
32/33 OR
64/65
(INTERNAL)
64/65
7
DOUBLE BUFFER
BitGrabber Plus
R REGISTER
RATIO
RATIO
16 BITS
R COUNTER
13–STAGE
2
2
R COUNTER
13–STAGE
UNUSED
BLOCK DIAGRAM
2
A AND N COUNTERS
2
A & N COUNTERS
13
13
BitGrabber Plus
BitGrabber Plus
Rs
Rs
A REGISTER
A REGISTER
23 BITS
23 BITS
18
DATA OUT
LOGIC AND
18
STORAGE
ADDRESS
TO MUX FOR
OUTPUT A
2
5
(INTERNAL)
STBY
BitGrabber Plus
C REGISTER
f V
f R
7 BITS
PORT
PLL / PLL
f R
f R
f V
2
UNUSED
f R
f V
FREQUENCY
DETECTOR
PHASE/
PAIR
2
FREQUENCY
MUX
DETECTOR
SELECT FROM
A REGISTER
PHASE/
(INTERNAL)
PAIR
2
f V
BitGrabber Plus
C REGISTER
7 BITS
3
4
5
18
17
16
10
MOTOROLA
LD
PD out / R
Rx / V
UNUSED
OUTPUT A
LD
PD out / R
Rx/ V
(INTERNAL)
2
STBY