ch7005c Chrontel, ch7005c Datasheet - Page 34

• Manufacturer Part Number: ch7005c
• Description: Digital Pc To Tv Encoder With Macrovisiontm
• Manufacturer: Chrontel

CHRONTEL
Buffered Clock Output Register
When this pin is selected to be an output, the buffered clock output register determines which clock is selected to be
output at the DS/BCO clock output pin and what frequency value is output when a VCO derived signal is out-
put.The tables below show the possible outputs.
34
Table 26. Clock Output Selection
Table 27. K3 Selection
Bit:
Symbol:
Type:
Default:
SCO[2:0]
000
001
010
011
100
101
110
111
SHF[2:0]
000
010
100
101
011
110
111
7
Buffered Clock Output
(for test use only)
VCO divided by K3 (see Table 27)
Field ID signal
(for test use only)
(for test use only)
TV horizontal sync (for test use only)
TV vertical sync (for test use only)
14MHz crystal
K3
2.5
3.5
4.5
4
5
6
7
6
5
SHF2
R/W
0
4
SHF1
R/W
0
3
SHF0
R/W
0
201-0000-025 Rev. 2.9, 6/24/2004
2
SCO2
0
R/W
Address: 17H
Bits: 6
Symbol: BCO
1
SCO1
R/W
0
CH7005C
0
SCO0
R/W
0