cxa3250an Sony Electronics, cxa3250an Datasheet - Page 20

• Manufacturer Part Number: cxa3250an
• Description: All Band Tv Tuner Ic With On-chip Pll
• Manufacturer: Sony Electronics

3-1) Address settings
3-2) Write mode
Up to four addresses can be selected by the hardware bit settings, so that multiple PLL can exist within
one system.
The responding address can be set according to the ADSW/CE pin voltage.
Address
Hardware bits
Write mode is used to receive various data. In this mode, byte 1 contains the address data, bytes 2 and
3 contain the frequency data, byte 4 contains the control data, and byte 5 contains the band switch data.
These data are latch transferred in the manner of byte 1, byte 2 + byte 3, and byte 4 + byte 5.
When the correct address is received and acknowledged, the data is recognized as frequency data if the
first bit of the next byte is “0”, and as control data and band switch data if this bit is “1”.
Also, when data transmission is stopped part-way, the previously programmed data is valid. Therefore,
once the control and band switch data have been programmed, 3-byte commands consisting of the
address and frequency data are possible.
Further, even if the I
conditions and the new address.
0.2 V
0.4 V
1
CE pin voltage
0.9 V
0 to 0.1 V
OPEN or
CC
CC
CC
to 0.3 V
to 0.6 V
1
to V
CC
CC
CC
CC
0
2
C bus stop conditions are not met, data can be input by sending the start
0
MA1
0
0
1
1
0
—20—
MA1
MA0
0
1
0
1
MA0
R/W
CXA3250AN