mc145170-2 Freescale Semiconductor, Inc, mc145170-2 Datasheet - Page 15

• Manufacturer Part Number: mc145170-2
• Description: Pll Frequency Synthesizer With Serial Interface
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
C7 - POL:
C6 - PDA/B: Selects which phase/frequency detector is to be used. When set high, enables the output
C5 - LDE:
C4 - C2, OSC2 - OSC0:
C1 - f
C0 - f
V
R
E:
E:
Figure 16. C Register Access and Format (8 Clock Cycles are Used)
ENB
CLK
D
* At this point, the new byte is transferred to the C register and stored. No other registers are affected.
in
Select the output polarity of the phase/frequency detectors. When set high, this bit inverts
PD
phase detector output pin descriptions for more information. This bit is cleared low at
power up.
of phase/frequency detector A (PD
φ
(φ
high-impedance state. This bit is cleared low at power up.
is forced to a static low level. This bit is cleared low at power up.
Reference output controls which determines the REF
Upon power up, the bits are initialized such that OSC
Enables the f
low level. The bit is cleared low upon power up.
Enables the f
low level. The bit is cleared low upon power up.
Enables the lock detector output when set high. When the bit is cleared low, the LD output
R
R
and φ
out
and φ
and interchanges the φ
V
MSB
C7
V
to the static high state. When cleared low, phase/frequency detector B is enabled
1
) and phase/frequency detector A is disabled with PD
V
R
output when set high. When cleared low, the f
output when set high. When cleared low, the f
C6
MC145170-2 Technical Data, Rev. 5
C4
0
0
0
0
1
1
1
1
2
C5
3
C3
0
0
1
1
0
0
1
1
C4
R
4
function with φ
C2
0
1
0
1
0
1
0
1
out
C3
) and disables phase/frequency detector B by forcing
5
dc (Static Low)
OSC
OSC
OSC
OSC
Default)
OSC
OSC
OSC
REF
C2
in
in
in
in
in
in
in
6
out
/2
/4
/8 (POR
/16
/8
/16
V
C1
Frequency
as depicted in
7
out
in
LSB
C0
/8 is selected.
characteristics as shown below.
8
V
R
Figure
output is forced to a static
output is forced to a static
*
out
forced to the
19. Also see the
Pin Connections
15