Rainbow Electronics MAX3541 - Manual (Page 11)

MAX3541
Complete Single-Conversion
Television Tuner
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BIT NAME BIT LOCATION (0 = LSB)
RECOMMENDED
DEFAULT
FUNCTION
N[7:0] 7-0 10101011
Sets the least significant bits of the PLL integer divider (N). Default
integer divider value is N = 4688. N can range from 256 to 32,767.
Table 3. N-DIV Low Register (Address: 0001
b
)
BIT NAME BIT LOCATION (0 = LSB)
RECOMMENDED
DEFAULT
FUNCTION
RESERVED 7 0 Must be set to 0.
R[6:0] 6-0 0010000
Sets the PLL reference divider (R). Default reference divider value is
R = 64. R can range from 16 to 127.
Table 4. R-DIV Register (Address: 0010
b
)
BIT NAME BIT LOCATION (0 = LSB)
RECOMMENDED
DEFAULT
FUNCTION
VCO[4:3] 7-6 10
VCO select. Selects one of three possible VCOs.
00 = VCOs shut down
01 = Selects VCO1
10 = Selects VCO2
11 = Selects VCO3
VCO[2:0] 5-3 111
V C O sub - b and sel ect. S el ects one of ei g ht p ossi b l e V C O sub - b and s.
000 = Selects SB0
001 = Selects SB1
010 = Selects SB2
011 = Selects SB3
100 = Selects SB4
101 = Selects SB5
110 = Selects SB6
111 = Selects SB7
LD 2 1
Lock detect enable.
0 = Disabled
1 = Enabled
VDIV[1:0] 1-0 10
VCO divider ratio select.
00 = S ets V C O d i vi d er to 4
01 = S ets V CO d i vi d er to 8
10 = Sets VCO divider to 16
11 = Sets VCO divider to 32
Table 5. VCO Register (Address: 0011
b
)