MB15E03 Datasheet, PDF (3/22 Pages) Fujitsu Component Limited. – Single Serial Input PLL Frequency Synthesizer On-Chip 1.2 GHz Prescaler

MB15E03
s PIN DESCRIPTIONS
Pin no.
SSOP BCC
Pin
name
1
16
OSCIN
2
1
OSCOUT
3
2
VP
4
3
VCC
5
4
DO
6
5
GND
7
6
Xfin
8
7
fin
9
8
Clock
10
9
Data
11
10
LE
12
11
PS
13
12
ZC
14
13
LD/fout
15
14
φP
16
15
φR
I/O
Descriptions
Programmable reference divider input.
I
Oscillator input.
Connection for an crystal or a TCXO.
TCXO should be connected with a coupling capacitor.
O
Oscillator output.
Connection for an external crystal.
– Power supply voltage input for the charge pump.
– Power supply voltage input.
O
Charge pump output.
Phase of the charge pump can be reversed by FC bit.
– Ground.
I
Prescaler complementary input, and should be grounded via a
capacitor.
I
Prescaler input.
Connection with an external VCO should be done with AC coupling.
Clock input for the 19-bit shift register.
I Data is shifted into the shift register on the rising edge of the clock.
(Open is prohibited.)
Serial data input using binary code.
The last bit of the data is a control bit. (Open is prohibited.)
Control bit = ”H” ; Data is transmitted to the programmable
I reference
counter.
Control bit = ”L” ; Data is transmitted to the programmable
counter.
Load enable signal input (Open is prohibited.)
I When LE is high, the data in the shift register is transferred to a
latch, according to the control bit in the serial data.
Power saving mode control. This pin must be set at ”L” at Power-
ON.
I (Open is prohibited.)
PS = ”H” ; Normal mode
PS = ”L” ; Power saving mode
Forced high-impedance control for the charge pump (with internal
I
pull up resistor.)
ZC = ”H” ; Normal Do output.
ZC = ”L” ; Do becomes high impedance.
Lock detect signal output(LD)/phase comparator monitoring
output (fout).
O The output signal is selected by LDS bit in the serial data.
LDS = ”H” ; outputs fout (fr/fp monitoring output)
LDS = ”L” ; outputs LD (”H” at locking, ”L” at unlocking.)
O
Phase comparator output for an external charge pump. Nch open
drain output.
O
Phase comparator output for an external charge pump. CMOS
output.
3