MB15E05L Datasheet, PDF (3/22 Pages) Fujitsu Component Limited. – Single Serial Input PLL Frequency Synthesizer On-Chip 1.2 GHz Prescaler

MB15E05L
s PIN DESCRIPTIONS
Pin no.
SSOP BCC
1
16
2
1
3
2
4
3
5
4
6
5
7
6
8
7
9
8
10
9
11
10
12
11
13
12
14
13
15
14
16
15
Pin name I/O
Descriptions
OSCIN
OSCOUT
VP
VCC
DO
GND
Xfin
fin
Clock
Data
LE
PS
ZC
LD/fout
φP
φR
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.)
I Control bit = “H” ; Data is transmitted to the programmable 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 pull up
I
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