參數(shù)資料
型號: MC145181
廠商: Motorola, Inc.
英文描述: Dual 550/60MHz PLL Frequency Synthesizers with DACs and Voltage Multipliers(帶DACs和電壓乘法器的雙550/60MHzPLL頻率合成器)
中文描述: 雙550/60MHz鎖相環(huán)頻率合成器的DAC和電壓倍增器(帶數(shù)模轉(zhuǎn)換器和電壓乘法器的雙550/60MHzPLL頻率合成器)
文件頁數(shù): 63/71頁
文件大?。?/td> 907K
代理商: MC145181
MC145181
63
MOTOROLA RF/IF DEVICE DATA
A3
A2
A1
A0
Don’t Care
Nibble
(Shifted in First)
Least
Significant Nibble
(Shifted in Last)
0
Hn
REGISTER
1
0
0
x
x
x
x
MSB of N
Counter
Divide Value
8A.
QUICK REFERENCE (continued)
N
15
. . .
N
12
N
11
. . .
N
8
N
7
. . .
N
4
N
3
. . .
N
0
Address Nibble
EXAMPLE:
To program the N
counter to divide by 1000 in decimal, first multiply 1000 by 8, which is 8000. Convert 8000 to
hexadecimal: $1F40. Then, add leading 0s (if necessary) to form 2 bytes (4 nibbles). Finally, configure address bits A3
to A0 and load the Hn
register. When the N register is subsequently loaded, data passes from the first Hn
register (buffer)
to the second N
register (buffer). (Data is still retained in the Hn
register.)
x
x
x
x
x
x
x
x
LSB of N
Counter
Divide Value
Conventional Access only
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