ch7006c Chrontel, ch7006c Datasheet - Page 32

• Manufacturer Part Number: ch7006c
• Description: Ch7006 Digital Pc To Tv Encoder
• Manufacturer: Chrontel

CHRONTEL
PLL Overflow Register
The PLL Overflow Register contains the MSB bits for the ‘M’ and ‘N’ values, which will be described in the PLL-
M and PLL-N registers, respectively. The reserved bits should not be written to.
PLL M Value Register
The PLL M value register determines the division factor applied to the frequency reference clock before it is input to
the PLL phase detector when the CH7006 is operating in master or pseudo-master clock mode. In slave mode, an
external pixel clock is used instead of the frequency reference, and the division factor is determined by the
XCM[3:0] value. This register contains the lower 8 bits of the complete 9-bit M value.
32
Bit:
Symbol:
Type:
Default:
Bit:
Symbol:
Type:
Default:
Figure 19: Luma Transfer Function at different contrast enhancement settings.
7
7
M7
R/W
0
6
6
M6
R/W
1
256
224
192
160
128
96
64
32
0
0
5
5
M5
R/W
0
32
64
96
4
Reserved
R/W
0
4
M4
R/W
0
128
160
3
Reserved
R/W
0
3
M3
R/W
0
192
224 256
2
N9
0
2
M2
0
201-0000-026 Rev. 2.8, 6/24/2004
R/W
R/W
Address: 13H
Bits: 5
Symbol: PLLM
Address: 14H
Bits: 8
Symbol: MNE
1
N8
R/W
0
1
M1
R/W
0
CH7006C
0
M8
R/W
0
0
M0
R/W
1