參數(shù)資料
型號(hào): CH7008A-V
廠商: Electronic Theatre Controls, Inc.
英文描述: Digital PC to TV Encoder Features
中文描述: 數(shù)字電視編碼器電腦功能
文件頁數(shù): 43/49頁
文件大?。?/td> 341K
代理商: CH7008A-V
201-0000-027 Rev 2.2, 9/30/99
43
CHRONTEL
CH7008A
Register Descriptions
(continued)
PLL Control Register
Symbol: PLLC
Address: 20H
Bits: 6
The following PLL and memory controls are available through the PLL control register:
MEM5V
MEM5V should be set to 0 when DVDD is 3.3 volts, and 1 when DVDD is 5 volts.
PLL5VA
PLL5VA is set to 1 when AVDD is 5 volts.
PLL5VD
PLL5VD is set to 1 when DVDD is 5 volts. A value of 0 is used when DVDD is 3.3 volts (default).
PPLLS
When the PLL5VA is 1 PLLS should be 1. When PLL5VA is 0 PLLS should be 0.
PLLCAP
PLLCAP controls the loop filter capacitor of the PLL. A recommended listing of PLLCAP vs
Mode is shown below.
PLLCPI
The default value should be used.
Bit:
Symbol:
Type:
Default:
7
6
5
PLLCPI
4
PLLCAP
3
PLLS
2
PLL5VD
1
PLL5VA
0
MEM5V
R/W
R/W
R/W
R/W
R/W
R/W
0
0
1
0
1
0
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