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MAX2121B Datasheet(Arkusz danych) 11 Page - Maxim Integrated Products

Numer części MAX2121B
Szczegółowy opis  L-Band Tuner with Programmable Baseband Filter
Pobierz  20 Pages
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Producent  MAXIM [Maxim Integrated Products]
Strona internetowa  http://www.maxim-ic.com
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 11 page
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Table 2. N-Divider MSB Register (Address: 0x00)
Table 3. N-Divider LSB Register (Address: 0x01)
Table 4. Charge-Pump Register (Address: 0x02)
Table 5. F-Divider MSB Register (Address: 0x03)
Table 6. F-Divider LSB Register (Address: 0x04)
Table 7. XTAL Buffer and Reference Divider Register (Address: 0x05)
BIT NAME
BIT LOCATION (0 = LSB)
DEFAULT
FUNCTION
FRAC
7
1
Users must program to 1 upon powering up the device.
N[14:8]
6–0
0000000
SetsthemostsignificantbitsofthePLLinteger-dividenumber(N).Ncan
range from 19 to 251.
BIT NAME
BIT LOCATION (0 = LSB)
DEFAULT
FUNCTION
N[7:0]
7–0
00100011 SetstheleastsignificantbitsofthePLLinteger-dividenumber.Ncan
range from 19 to 251.
BIT NAME BIT LOCATION (0 = LSB)
DEFAULT
FUNCTION
CPMP[1:0]
7
–6
00
Charge-pump minimum pulse width. Users must program to 00 upon
powering up the device.
CPLIN[1:0]
5–4
00
Controls charge-pump linearity. Users must program to 01 upon powering
up the device.
F[19:16]
3–0
0010
Setsthe4mostsignificantbitsofthePLLfractionaldividenumber.
Default value is F = 194,180 decimal.
BIT NAME
BIT LOCATION (0 = LSB)
DEFAULT
FUNCTION
F[15:8]
7–0
11110110 SetsthemostsignificantbitsofthePLLfractional-dividenumber(F).
Default value is F = 194,180 decimal.
BIT NAME
BIT LOCATION (0 = LSB)
DEFAULT
FUNCTION
F[7:0]
7–0
10000100 SetstheleastsignificantbitsofthePLLfractional-dividenumber(F).
Default value is F = 194,180 decimal.
BIT NAME
BIT LOCATION (0 = LSB)
DEFAULT
FUNCTION
XD[2:0]
7–5
000
Sets the crystal-divider setting.
000 = Divide by 1.
001 = Divide by 2.
011 = Divide by 3.
100 = Divide by 4.
101 through 110 = All divide values from 5 (101) to 7 (110).
111 = Divide by 8.
R[4:0]
4–0
00001
Sets the PLL reference-divider (R) number. Users must program to 00001
upon powering up the device.
00001 = Divide by 1; other values are not tested.
MAX2121B
L-Band Tuner with Programmable
Baseband Filter
www.maximintegrated.com
Maxim Integrated │ 11




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