Texas Instruments LMK04828 User Manual

LMK04821 , LMK04826 , LMK04828
www.ti.com SNAS605AR –MARCH 2013–REVISED DECEMBER 2015
9.7.8.8 PLL2_LF_C4, PLL2_LF_C3
This register controls the integrated loop filter capacitors.
Table 72. Register 0x16D
POR
BIT NAME DESCRIPTION
DEFAULT
Internal loop filter components are available for PLL2, enabling either 3rd or 4th order loop
filters without requiring external components.
Internal loop filter capacitor C4 can be set according to the following table.
Field Value Resistance
0 (0x00) 10 pF
1 (0x01) 15 pF
2 (0x02) 29 pF
3 (0x03) 34 pF
4 (0x04) 47 pF
5 (0x05) 52 pF
7:4 PLL2_LF_C4 0
6 (0x06) 66 pF
7 (0x07) 71 pF
8 (0x08) 103 pF
9 (0x09) 108 pF
10 (0x0A) 122 pF
11 (0x0B) 126 pF
12 (0x0C) 141 pF
13 (0x0D) 146 pF
14 (0x0E) Reserved
15 (0x0F) Reserved
Internal loop filter components are available for PLL2, enabling either 3rd or 4th order loop
filters without requiring external components.
Internal loop filter capacitor C3 can be set according to the following table.
Field Value Resistance
0 (0x00) 10 pF
1 (0x01) 11 pF
2 (0x02) 15 pF
3 (0x03) 16 pF
4 (0x04) 19 pF
5 (0x05) 20 pF
3:0 PLL2_LF_C3 0
6 (0x06) 24 pF
7 (0x07) 25 pF
8 (0x08) 29 pF
9 (0x09) 30 pF
10 (0x0A) 33 pF
11 (0x0B) 34 pF
12 (0x0C) 38 pF
13 (0x0D) 39 pF
14 (0x0E) Reserved
15 (0x0F) Reserved
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Texas Instruments LMK04828 Specifications

General

Brand	Texas Instruments
Model	LMK04828
Category	Motherboard
Language	English