ISDB-T 1-Segment Tuner
Table 10. N-Divider MSB Register
BIT NAME
N[11:4]
BIT LOCATION
(0 = LSB)
7, 6, 5, 4, 3, 2,
1, 0
DEFAULT
01111010
FUNCTION
Sets the most significant bits of the PLL integer divide number (N). Default
integer divider value is N = 1952 decimal. N can range from 1314 to 2687.
Note: When changing N-divider value, both registers N-Divider MSB and N-Divider LSB must be loaded as they are double buffered.
Table 11. N-Divider LSB/LIN Register
BIT NAME
N[3:0]
X
BIT LOCATION
(0 = LSB)
7, 6, 5, 4
3
DEFAULT
0000
0
FUNCTION
Sets the least significant bits of the PLL integer divide number (N). Default
integer divider value is N = 1952 decimal. N can range from 1314 to 2687.
Factory use only. Must be programmed to 0 upon power-up.
Sets linearity mode of mixers.
MIX
2
0
0 = Selects normal mode for mixer.
1 = Selects high linearity mode for mixer.
Sets linearity mode of 3rd-stage RFVGA.
RFVGA
1
0
0 = Selects normal mode for 3rd-stage RFVGA.
1 = Selects high linearity mode for 3rd-stage RFVGA.
Selects standby mode when STBY pin is logic-low.
STBY
0
0
0 = Normal operation.
1 = Disables the signal path and frequency synthesizer leaving only the serial
bus, crystal oscillator, and XTALOUT buffer active.
Note: When changing N-divider value, both registers N-Divider MSB and N-Divider LSB must be loaded as they are double buffered.
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