SNAS605AS March 2013 – May 2020 LMK04821 , LMK04826 , LMK04828
PRODUCTION DATA.
This register controls the integrated loop filter resistors.
BIT | NAME | POR DEFAULT | DESCRIPTION | |
---|---|---|---|---|
7:6 | NA | 0 | Reserved | |
5:3 | PLL2_LF_R4 | 0 | Internal loop filter components are available for PLL2, enabling either 3rd- or 4th-order loop filters without requiring external components.
Internal loop filter resistor R4 can be set according to the following table. |
|
Field Value | Resistance | |||
0 (0x00) | 200 Ω | |||
1 (0x01) | 1 kΩ | |||
2 (0x02) | 2 kΩ | |||
3 (0x03) | 4 kΩ | |||
4 (0x04) | 16 kΩ | |||
5 (0x05) | Reserved | |||
6 (0x06) | Reserved | |||
7 (0x07) | Reserved | |||
2:0 | PLL2_LF_R3 | 0 | Internal loop filter components are available for PLL2, enabling either 3rd- or 4th-order loop filters without requiring external components.
Internal loop filter resistor R3 can be set according to the following table. |
|
Field Value | Resistance | |||
0 (0x00) | 200 Ω | |||
1 (0x01) | 1 kΩ | |||
2 (0x02) | 2 kΩ | |||
3 (0x03) | 4 kΩ | |||
4 (0x04) | 16 kΩ | |||
5 (0x05) | Reserved | |||
6 (0x06) | Reserved | |||
7 (0x07) | Reserved |