CXA3235 Sony Corporation, CXA3235 Datasheet - Page 11

• Manufacturer Part Number: CXA3235
• Description: All Band TV Tuner IC with On-chip PLL
• Manufacturer: Sony Corporation

Description of PLL Block
1) Mode Setting Method
2) Address Setting
Address
Frequency step is for when X’tal OSC = 4 MHz.
The PLL on this IC supports the I
The modes for each frequency step are set according to the MS pin voltage.
The responding address can be changed according to the ADSW pin voltage, so that multiple PLL can
exist within one system.
Symbol
Mode
ADSW
OPEN or 0.2 V
SDA
B-0
B-1
B-2
B-3
B-4
SCL
ADSW pin voltage
0.4 V
0.9 V
0 to 0.1 V
CC
CC
0.45 V
0.65 V
to 0.6 V
CC
to V
0.85 V
MS pin voltage
0 to 0.15 V
CC
to 0.3 V
CC
CC
CC
OPEN
CC
CC
Address selection
to 0.55 V
to 0.75 V
to V
Description
CC
SCL input
SDA I/O
CC
CC
2
CC
CC
C bus control format. The control pins are as shown in the table below.
MA1
0
0
1
1
divider
15 bit
14 bit
15 bit
15 bit
15 bit
Main
—11—
MA0
0
1
0
1
Reference
divider
1024
1024
512/
640/
512
640
512
Reference frequency
3.90625 kHz
3.90625 kHz
7.8125 kHz/
7.8125 kHz
7.8125 kHz
6.25 kHz/
6.25 kHz
CXA3235/3236N
Frequency
31.25 kHz
31.25 kHz
62.5 kHz/
62.5 kHz
62.5 kHz
50 kHz/
50 kHz
step