參數(shù)資料
型號: MT312
廠商: ZARLINK SEMICONDUCTOR INC
元件分類: 消費家電
英文描述: Satellite Channel Decoder
中文描述: SPECIALTY CONSUMER CIRCUIT, PQFP80
封裝: MQFP-80
文件頁數(shù): 23/90頁
文件大?。?/td> 318K
代理商: MT312
Initialisation
MT312
23
3.5.3 System Clock Frequency. Register 34 (R/W)
SYS CLK[7:0] = System clock frequency * 2 in MHz.
The SYS CLK register must be programmed to indicate the system clock frequency to the calculation unit. The
maximum system clock frequency allowed is 90MHz.
e.g. for a crystal frequency = 10MHz, if the PLL multiplication ratio is 9,
The system clock frequency = 90MHz.
Then SYS CLK[7:0] = 180.
The system clock frequency is NOT affected by the setting of SYS CLK[7:0] register.
3.6 MT312 Initialisation Read Register
3.6.1 Identification. Register 126 (R)
ID[7:0]:
This register provides an identi
fi
cation number related to the MT312 version.
NAME
ADR
B7
B6
B5
B4
B3
B2
B1
B0
Def
hex
SYS CLK
34
SYS CLK[7:0] - System clock frequency x2 in MHz
R/W
00
NAME
ADR
B7
B6
B5
B4
B3
B2
B1
B0
Def
hex
ID
126
ID[7:0] Chip identi
fi
cation.
R
03
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