1CYW2331
PRELIMINARY
CYW2331
Dual Serial Input PLL with 2.0-GHz and 600-MHz Prescalers
Features
Applications
• Operating voltage: 2.7V to 5.5V
• PLL1 operating frequency:
— 2.0 GHz with prescaler ratios of 64/65 and 128/129
• PLL2 operating frequency:
— 600 MHz with prescaler ratios of 8/9 and 16/17
• Lock detect feature
The Cypress CYW2331 is a dual serial input PLL frequency
synthesizer which includes a 2.0-GHz RF and a 600-MHz IF
dual modulus prescaler to combine the RF and IF mixer fre-
quency sections of wireless communication systems. The syn-
thesizer is designed for cordless/cellular telephone systems,
cable TV tuners, WLANs and other wireless communication
systems. The device operates from 2.7V and dissipates only
24 mW.
• Available in a 20-pin TSSOP (Thin Shrink Small Outline
Package)
• Available in a 24-pin CSP (Chip Scale Package)
• Available in a 20-pin MLF
(Mirco Lead Frame Package)
CYW2331 Dual Hi-Lo PLL Block Diagram
GND (4)
GND (7)
VCC1 (1)
VCC2 (20)
VP1 (2)
FIN1 (5)
Prescaler
64/65 or
128/129
fp1
Binary 7-Bit
Swallow Counter
Binary 11-Bit
Programmable Counter
DOPLL1 (3)
Phase
Detector
Charge
Pump
FIN1# (6)
19-Bit
Latch
Pwr-dwn
PLL1
OSC_IN (8)
fr fp
fr1
fr2
15-Bit
Monitor
Output
Selector
Reference Counter
FO/LD (10)
20-Bit Latch
Latch
Selector
LE (13)
DATA (12)
20-Bit Latch
Power
Control
15-Bit
Reference Counter
22-Bit
Shift
Cntrl
Reg.
CLOCK (11)
19-Bit
Latch
Pwr-dwn
PLL2
Phase
Detector
Charge
Pump
FIN2 (16)
Prescaler
8/9 or
16/17
Binary 4-Bit
Swallow Counter
Binary 11-Bit
Programmable Counter
DOPLL2 (18)
fp2
FIN2# (15)
GND (14)
GND (9)
GND (17)
VP2 (19)
Pin Configuration
V
1
1
2
20
V
2
CC
CC
21
20
1
2
3
4
5
6
7
8
9
NC
NC
Vp1
V 1
19
18
17
16
15
14
13
12
11
V 2
P
P
DoPLL2
GND
Fin2
D PLL1
3
D PLL2
O
O
19
18
17
16
15
14
13
DoPLL1
GND
1
15
DoPLL1
GND
GND
4
GND
2
3
4
5
GND
Fin1
14
13
12
11
Fin2
Fin2#
GND
LE
(Top View)
Fin2#
GND
LE
Fin1
F
1
5
F
F
2
(Top View)
IN
IN
IN
Fin1#
GND
Fin1#
GND
F
1#
6
2#
IN
GND
OSC_IN
GND
7
GND
LE
DATA
NC
OSC_IN
NC
8
9
DATA
CLOCK
F /LD
10
O
MLF
TSSOP
CSP
Cypress Semiconductor Corporation
•
3901 North First Street
•
San Jose
•
CA 95134
•
408-943-2600
February 12, 2001. Rev. **