ch7004c Chrontel, ch7004c Datasheet - Page 44

• Manufacturer Part Number: ch7004c
• Description: Digital Pc To Tv Encoder With Macrovisiontm
• Manufacturer: Chrontel

CHRONTEL
CIV Control Register
The following controls are available through the CIV control register:
ACIV
CIVH[1:0]
CIV[25:24]
44
Table 30. PLL Capacitor Setting
Bit:
Symbol:
Type:
Default:
Mode
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
0
1
2
3
4
5
6
7
8
9
7
When the automatic calculated increment value is 1, the number calculated and present at the CIV
registers will automatically be used as the increment value for subcarrier generation, removing the
1, the subcarrier generation must be forced to free-run mode.
These bits control the hysteresis circuit which is used to calculate the CIV value.
See descriptions in the next section.
need for the user to read the CIV value and write in a new FSCI value. Whenever this bit is set to
6
5
PLLCAP
Value
1
1
1
0
1
0
1
1
0
1
1
1
0
1
1
1
0
0
0
0
1
0
1
1
0
1
1
0
1
4
CIV25
R
0
3
CIV24
R
0
201-0000-024 Rev. 2.4, 6/24/2004
2
CIVH1
0
R/W
Address: 21H
Bits: 5
Symbol: CIVC
1
CIVH0
R/W
0
CH7004C
0
ACIV
R/W
1