MB1519 Fujitsu Microelectronics, Inc., MB1519 Datasheet - Page 7

• Manufacturer Part Number: MB1519
• Description: Dual Serial Input Pll Frequency Synthesizer
• Manufacturer: Fujitsu Microelectronics, Inc.

Note: Divide ratio less than 16 is prohibited.
Note: Divide ratio (A) range = 0 to 127
Note: Z = High-impedance
BINARY 11-BIT PROGRAMMABLE COUNTER DATA SETTING
BINARY 7-BIT SWALLOW COUNTER DATA SETTING
DMY : DUMMY BIT INPUT
REF : DIVIDE RATIO (R) OF THE REFERENCE COUNTER SETTING BIT
FP
FC
Divide
Divide
fr > fp
fr = fp
fr < fp
VCO Polarity
Ratio
Ratio
2047
127
(N)
(A)
16
17
0
1
Divide ratio (N) range = 16 to 2047
Depending upon the VCO poratity, FC bit should be set.
: OUTPUT OF THE PROGRAMMABLE DIVIDER SETTING BIT
: PHASE CONTROL BIT OF THE PHASE DETECTOR
This bit is set to low in operation.
H = 512 (fr = 25.0 kHz)
L = 1024 (fr = 12.5 kHz)
H = fp pin (15 pin) outputs programmable divider output frequency (fp1) of transmit section.
L = fp pin (15 pin) outputs programmable divider output frequency (fp2) of reception section.
Output of charge pump is selected by FC pin.
11
N
0
0
1
A
7
0
0
1
10
N
0
0
1
A
6
0
0
1
FC = H
(1)
H
Z
L
N
9
0
0
1
A
5
0
0
1
FC = L
(2)
H
Z
L
N
A
8
0
0
1
4
0
0
1
N
7
0
0
1
A
3
0
0
1
N
6
0
0
1
A
2
0
0
1
N
A
5
1
1
1
1
0
1
1
N
4
0
0
1
VCO Output
Frequency
N
3
0
0
1
N
2
0
0
1
N
1
0
1
1
VCO Input Voltage
(2)
(1)
MB1519
7