76
DS1113F1
CS4399
7.2 PLL Registers
7.2.2
PLL Setting 2
Address 0x30002
R/W
7
6
5
4
3
2
1
0
PLL_DIV_FRAC_0
Default
0
0
0
0
0
0
0
0
Bits
Name
Description
7:0
PLL_DIV_
FRAC_0
PLL fractional portion of divide ratio LSB. There are 3 bytes of PLL feedback divider fraction portion and this is LSB byte;
e.g., 0xFF means (2
-17
+ 2
-18
+ …+2
-24
).
0000 0000 (Default)
7.2.3
PLL Setting 3
Address 0x30003
R/W
7
6
5
4
3
2
1
0
PLL_DIV_FRAC_1
Default
0
0
0
0
0
0
0
0
Bits
Name
Description
7:0
PLL_DIV_
FRAC_1
PLL fractional portion of divide ratio middle byte; e.g., 0xFF means (2
-9
+ 2
-10
+ …+2
-16
).
0000 0000 (Default)
7.2.4
PLL Setting 4
Address 0x30004
R/W
7
6
5
4
3
2
1
0
PLL_DIV_FRAC_2
Default
0
0
0
0
0
0
0
0
Bits
Name
Description
7:0
PLL_DIV_
FRAC_2
PLL fractional portion of divide ratio MSB; e.g., 0xFF means (2
-1
+ 2
-2
+ …+2
-8
).
0000 0000 (Default)
7.2.5
PLL Setting 5
Address 0x30005
R/W
7
6
5
4
3
2
1
0
PLL_DIV_INT
Default
0
1
0
0
0
0
0
0
Bits
Name
Description
7:0 PLL_DIV_INT PLL integer portion of divide ratio. Integer portion of PLL feedback divider.
0100 0000 (Default)
7.2.6
PLL Setting 6
Address 0x30008
R/W
7
6
5
4
3
2
1
0
PLL_OUT_DIV
Default
0
0
0
1
0
0
0
0
Bits
Name
Description
7:0
PLL_OUT_
DIV
Final PLL clock output divide value.
0001 0000 (Default)
7.2.7
PLL Setting 7
Address 0x3000A
R/W
7
6
5
4
3
2
1
0
PLL_CAL_RATIO
Default
1
0
0
0
0
0
0
0
Bits
Name
Description
7:0
PLL_CAL_
RATIO
PLL calibration ratio. See
for configuration details. Target value for PLL VCO calibration.
1000 0000 (Default)