MB15U36PFV FUJITSU [Fujitsu Component Limited.], MB15U36PFV Datasheet - Page 14

• Manufacturer Part Number: MB15U36PFV
• Description: Dual PLL Frequency Synthesizer with On-Chip Prescaler
• Manufacturer: FUJITSU [Fujitsu Component Limited.]

Functional Descriptions
Table 2. Binary 15-bit Programmable Reference Counter Data Setting
Note: Divide ratio less than 3 is prohibited.
Notes: 1) Z = High-impedance
Table 3. Phase Comparator Phase Switching Data Setting
Divide
Ratio
32767
(R)
Programmable Counter
CNT1, 2
N1 to N11
A1 to A7
SW
PS
Note: Input Data with MSB first.
3
4
2) The FC bit should be set depending upon the VCO and LPF polarity
.
VCO polarity
LSB
C
N
1
1
fr > fp
fr = fp
fr < fp
C
N
2
2
15
R
0
0
1
.
A
1
3
Control bits
Divide ratio setting bits for the programmable counter (3 to 2,047)
Divide ratio setting bits for the swallow counter (0 to 127)
Divide ratio setting bit for the prescalers
Power saving mode control bit
(64/65 or 128/129 for the RF1-PLL and RF2-PLL)
4
14
A
2
R
0
0
1
FC
.
RF1-PLL,RF2-PLL
5
A
3
13
R
0
0
1
.
(1)
H
Z
L
6
A
4
Do
= “H”
7
12
A
5
R
0
0
1
.
RF1-PLL,RF2-PLL
8
A
6
FC
11
R
0
0
1
.
RF1-PLL,RF2-PLL
9
A
Data Flow
7
10
10
N
R
(2)
1
0
0
1
.
H
L
Z
11
N
2
= “L”
R
9
0
0
1
.
12
N
3
13
N
4
R
8
0
0
1
.
[Table 1]
[Table 7]
[Table 8]
[Table 9]
[Table 10]
14
VCO output
N
5
frequency
R
7
0
0
1
.
15
N
6
16
N
7
R
6
0
0
1
.
17
N
8
R
5
0
0
1
.
18
N
9
VCO input voltage
19
10
N
R
4
0
0
1
.
11
20
N
Fujitsu Microelectronics, Inc.
R
3
0
1
1
MB15U36
.
21
W
S
MSB
22
P
S
R
2
1
0
1
.
(2)
(1)
R
1
1
0
1
.
15