MC145170-1 Motorola, MC145170-1 Datasheet - Page 13

• Manufacturer Part Number: MC145170-1
• Description: PLL FREQUENCY SYNTHESIZER WITH SERIAL INTERFACE
• Manufacturer: Motorola

DataSheet4U.com
www.DataSheet4U.com
DataSheet
4
MOTOROLA
U
.com
ENB
CLK
D in
V H = High voltage level
V L = Low voltage level
*At this point, when both f R and f V are in phase, both the sinking and sourcing output FETs are turned on for a very short interval.
NOTE: The PD out generates error pulses during out–of–lock conditions. When locked in phase and frequency, the output is high
REFERENCE
* At this point, the two new bytes are transferred to the N register and stored. No other registers are affected. In addition, the N and
FEEDBACK
R counters are jam–loaded and begin counting down together.
OSC in R
(f in N)
PD out
impedance and the voltage at that pin is determined by the low–pass filter capacitor. PD out , R , and V are shown with the
polarity bit (POL) = low; see Figure 14 for POL.
N15
MSB
LD
f R
f V
R
V
1
N14
Figure 17. Phase/Frequency Detectors and Lock Detector Output Waveforms
2
Figure 16. N Register Access and Format (16 Clock Cycles Are Used)
N13
3
N12
4
N11
5
N10
6
HEXADECIMAL VALUE
DataSheet4U.com
N9
0
0
0
0
0
0
0
0
0
0
0
F
F
7
0
0
0
0
0
0
0
0
0
0
0
F
F
N8
8
0
0
0
0
2
2
2
2
2
2
2
F
F
N7
0
1
2
3
5
6
7
8
9
A
B
E
F
9
NOT ALLOWED
NOT ALLOWED
NOT ALLOWED
NOT ALLOWED
NOT ALLOWED
NOT ALLOWED
NOT ALLOWED
N COUNTER =
N COUNTER =
N COUNTER =
N COUNTER =
N COUNTER =
N COUNTER =
N6
10
N5
11
DataSheet4U.com
N4
40
41
42
43
65,534
65,535
12
N3
*
DECIMAL EQUIVALENT
13
N2
14
N1
V H
V L
V H
V L
V H
HIGH IMPEDANCE
V L
V H
V L
V H
V L
V H
V L
15
LSB
N0
MC145170–1
16
*
13