ICS307G-03LFT 데이터 시트보기 (PDF) - Integrated Circuit Systems
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ICS307G-03LFT Datasheet PDF : 12 Pages
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ICS307-03
SERIALLY PROGRAMMABLE CLOCK SOURCE
Table 1. Input Divider
Bits
Divide Value 12 11 10 9 8 7 6 5 4 3 2 1 0
Rule
1
XXXXXX X XXXX0 0
1+ Bit 0
2
XXXXXX X XXXX0 1
1 + Bit 0
3
X X X X X X X 1 1 1 0 1 0 subtract 2 from the
4
XXXXXX
X
1
1
0
1
1
0
desired value, convert to
binary, invert, and apply
5
X X X X X X X 1 1 0 0 1 0 to bits 5...2
6
X X X X X X X 1 0 1 1 1 0 Bits [1..0] = 10
7
XXXXXX X 1 0 1 0 1 0
8
XXXXXX X 1 0 0 1 1 0
9
XXXXXX X 1 0 0 0 1 0
10
XXXXXX X 0 1 1 1 1 0
11
XXXXXX X 0 1 1 0 1 0
12
XXXXXX X 0 1 0 1 1 0
13
XXXXXX X 0 1 0 0 1 0
14
XXXXXX X 0 0 1 1 1 0
15
XXXXXX X 0 0 1 0 1 0
16
XXXXXX X 0 0 0 1 1 0
17
XXXXXX X 0 0 0 0 1 0
18
0 0 0 0 0 0 0 1 0 1 0 1 1 subtract 8 from the
19
0
00000
0
1
0
1
1
1
1
desired divide value,
convert to binary, and
20
0 0 0 0 0 0 0 1 1 0 0 1 1 apply to bits 11...2
21
0 0 0 0 0 0 0 1 1 0 1 1 1 Bits [1..0] = 11
2054
2055
111111 1 111011
111111 1 111111
Table 2. VCO Divider
Bits
Divide Value 23 22 21 20 19 18 17 16 15 14 13 Rule
12
0
0
0
0
0
0
0
0
1
0
0 subtract 8 from the desired
13
0
0
0
0
0
0
0
0
1
0
1 divide value, convert to
binary, and apply to bits
14
0
0
0
0
0
0
0
0
1
1
0 23...13
2054
2055
1
1
1
1
1
1
1
1
1
1
0
1
1
1
1
1
1
1
1
1
1
1
MDS 307-03 C
3
Revision 101705
Integrated Circuit Systems ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com
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