FUJITSU MB15F74UL - Manual (Page 4)

MB15F74UL
4
■ BLOCK DIAGRAM
(9)
Clock
Data
LE
PS RF
Xfin RF
fin RF
OSC IN
fin IF
PS IF
V CCIF GND IF
fp IF
Do IF
LD IF
T1 T2
T1 T2
FC
RF
SW
RF
LDS
Do RF
OR LD /
fout
LD
fr
IF
fr RF
fp IF
fp RF
fr IF
fr RF
fp RF
C
N
1
C
N
2
AND
V CCRF GND RF Vp RF
(19)
( )
(11)
(17)
(18)
(12) (13) (10)
(8)
(7)
(3) (4)
(1)
(5)
(15)
GND
(20)
(16)
14
Xfin IF
(2)
Vp IF
(6)
Intermittent
mode control
(IF-PLL)
Prescaler
(IF-PLL)
(32/33, 64/65)
7 bit latch 11 bit latch
Binary 7-bit
swallow counter
(IF-PLL)
Binary 11-bit
programmable
counter (IF-PLL)
Phase
comp.
(IF-PLL)
Charge
pump
(IF-PLL)
Current
Switch
2 bit latch 14 bit latch 1 bit latch
Binary 14-bit pro-
grammable ref.
counter(IF-PLL)
C/P setting
counter
Lock Det.
(IF-PLL)
2 bit latch 14 bit latch 1 bit latch
Binary 14-bit pro-
grammable ref.
counter (RF-PLL))
C/P setting
counter
Selector
Prescaler
(RF-PLL)
(64/65, 128/129)
Lock Det.
(RF-PLL)
Intermittent
mode control
(RF-PLL)
3 bit latch
FC
IF
SW
IF
LDS
3 bit latch
7 bit latch 11 bit latch
Binary 7-bit
swallow counter
(RF-PLL)
Binary 11-bit
programmable
counter (RF-PLL)
Phase
comp.
(RF-PLL)
Fast lock
Tuning
Charge
pump
(RF-PLL)
Current
Switch
Schmitt
circuit Latch selector
Schmitt
circuit
Schmitt
circuit
23-bit shift register
Fast
lock
Tuning
LD RF
fp RF