ACD2203 Datasheet, PDF (13/24 Pages) ANADIGICS, Inc – CATV/TV/Video Downconverter with Dual Synthesizer

ACD2203
Table 9: Reference Divider Registers
MSB
LSB
Data Word
FIRST DATA WORD
SECOND DATA WORD
THIRD DATA WORD
Register Bit ^{24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1}
Function
Dummy/
Spacer
Program Mode
Reference Divider Divide Ratio, R
Select
Data ^{X X D D D D D R R R R R R R R R R R R R R R S S}
2 1 5 4 3 2 1 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 2 1
Table 10: Reference Divider R Counter Bits
DIVIDE R R R R R R R R R R R R R R R
RATIO R 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
3
0000000000000 11
4
0000000 0 0000 100
-
- ------ - -------
32767
1 1 1 1 1 1 1 1 1 1 1 1 1 11
Notes:
Divide ratios less than 3 are prohibited.
MSB
Table 11: Main Divider Registers
Data Word
FIRST DATA WORD
SECOND DATA WORD
LSB
THIRD DATA WORD
Register Bit 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
Function
Dummy/
Spacer
Program
Mode
B Counter
A Counter
Select
Data
X
2
X
1
C
2
C
1
BBB
11 10 9
B
8
B
7
B
6
B
5
B
4
B
3
B
2
B
1
A
7
A
6
A
5
A
4
A
3
A
2
A
1
S
2
S
1
Table 12: Main Divider B Counter Bits
VALUE OF B B B B B B B B B B B B
COUNTER 11 10 9 8 7 6 5 4 3 2 1
3
000000000 11
4
00000000 100
-
-----------
2047
11111111111
Notes:
B > A, Divide ratios less than 3 are prohibited.
PRELIMINARY DATA SHEET - Rev 1.3
13
12/2003