參數(shù)資料
型號: FS7145-02G-XTD
廠商: ON Semiconductor
文件頁數(shù): 3/17頁
文件大?。?/td> 0K
描述: IC CLOCK GEN PLL PROG 16SSOP
標(biāo)準(zhǔn)包裝: 76
類型: 時鐘/頻率合成器
PLL:
輸入: 晶體
輸出: CMOS,PECL
電路數(shù): 1
比率 - 輸入:輸出: 2:1
差分 - 輸入:輸出: 無/是
頻率 - 最大: 300MHz
除法器/乘法器: 是/無
電源電壓: 3 V ~ 3.6 V
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 16-SSOP(0.209",5.30mm 寬)
供應(yīng)商設(shè)備封裝: 16-SSOP
包裝: 管件
FS7140, FS7145
http://onsemi.com
11
Programming Information
All register bits are cleared to zero on powerup. All register bits may be read back as written.
Table 7. FS7140 REGISTER MAP
Address
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
Byte 7
Reserved
(Bit 63)
Must be set
to “0”
Reserved
(Bit 62)
Must be set
to “0”
Reserved
(Bit 61)
Must be set
to “0”
Reserved
(Bit 60)
Must be set
to “0”
Reserved
(Bit 59)
Must be set
to “0”
Reserved
(Bit 58)
Must be set
to “0”
Reserved
(Bit 57)
Must be set
to “0”
Reserved
(Bit 56)
Must be set
to “0”
Byte 6
Reserved
(Bit 55)
Must be set
to “0”
Reserved
(Bit 54)
Must be set
to “0”
SHUT2
(Bit 53)
0 = Normal
1 = Powered
down
Reserved
(Bit 52)
Must be set
to “0”
Reserved
(Bit 51)
Must be set
to “0”
Reserved
(Bit 50)
Must be set
to “0”
Reserved
(Bit 49)
Must be set
to “0”
Reserved
(Bit 48)
Must be set
to “0”
Byte 5
Reserved
(Bit 47)
Must be set
to “0”
LC
(Bit 46)
Loop filter
cap select
LR[1]
(Bit 45)
LR[0]
(Bit 44)
Reserved
(Bit 43)
Must be set
to “0”
Reserved
(Bit 42)
Must be set
to “0”
CP[1]
(Bit 41)
CP[0]
(Bit 40)
Loop filter resistor select
Charge pump current select
Byte 4
CMOS
(Bit 39)
0 = PECL
1 = CMOS
FBKDSRC
(Bit 38)
0 = VCO
output
1 = Post
divider output
FBKDIV[13]
(Bit 37)
8192
FBKDIV[12]
(Bit 36)
4096
FBKDIV[11]
(Bit 35)
2048
FBKDIV[10]
(Bit 34)
1024
FBKDIV[9]
(Bit 33)
512
FBKDIV[8]
(Bit 32)
256
See the Feedback Divider section for disallowed FBKDIV values
Byte 3
FBKDIV[7]
(Bit 31)
128
FBKDIV[6]
(Bit 30)
64
FBKDIV[5]
(Bit 29)
32
FBKDIV[4]
(Bit 28)
16
FBKDIV[3]
(Bit 27)
8
FBKDIV[2]
(Bit 26)
4
FBKDIV[1]
(Bit 25)
2
FBKDIV[0]
(Bit 24)
1
See the Feedback Divider section for disallowed FBKDIV values
Byte 2
POST2[3]
(Bit 23)
POST2[2]
(Bit 22)
POST2[1]
(Bit 21)
POST2[0]
(Bit 20)
POST1[3]
(Bit 19)
POST1[2]
(Bit 18)
POST1[1]
(Bit 17)
POST1[0]
(Bit 16)
Modulus = N + 1 (N = 0 to 11); See Table 12
Byte 1
POST3[1]
(Bit 15)
POST3[0]
(Bit 14)
SHUT1
(Bit 13)
0 = Normal
1 = Powered
down
REFDSRC
(Bit 12)
0 = Crystal
oscillator
1 = REF pin
REFDIV[11]
(Bit 11)
2048
REFDIV[10]
(Bit 10)
1024
REFDIV[9]
(Bit 9)
512
REFDIV[8]
(Bit 8)
256
Modulus = 1, 2, 4 or 8;
See Table 12
Byte 0
REFDIV[7]
(Bit 7)
128
REFDIV[6]
(Bit 6)
64
REFDIV[5]
(Bit 5)
32
REFDIV[4]
(Bit 4)
16
REFDIV[3]
(Bit 3)
8
REFDIV[2]
(Bit 2)
4
REFDIV[1]
(Bit 1)
2
REFDIV[0]
(Bit 0)
1
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