Realtek RTD2120-series
confidential
22
Register::PLL_control
0xFF10
Name
Bits
Read/Write
Reset State
Comments
PLL_STA
7
R
1
PLL status
0: normal operation
1: PLL abnormal or PLL power down
DVSET
6:5
R/W
2
Test mode vctrl set
11(0.8v)
10(1.0v)
01(1.2v)
00(1.4v)
reserved
4:3
--
0
WD_RST
2
R/W
0
0: No effect
1: Watchdog reset
WD_SET
1
R/W
0
0: No effect
1: Watchdog set
PWDN_PLL
0
R/W
1
0: normal operation
1: power down PLL
Register::PLL_filter_control
0xFF11
Name
Bits
Read/Write
Reset State
Comments
reserved
7:4
--
0
VR
3:2
R/W
0
Loop filter resister
00: 16.32k
01: 19.12k
10: 21.92k
11: 24.72k
PLL_IP
1:0
R/W
2
Charge Pump current
Ich=5u+bit[1]*10u+ bit[0]*5u
Register::PLL_M_N_DIV
0xFF12
Name
Bits
Read/Write
Reset State
Comments
M_CODE
7:4
R/W
1
Actual M = 1
N_CODE
3:2
R/W
0
Actual N = 1
DIV
1:0
R/W
0
Divider value
00:1
01:1/2
10:1/4
11:1/8
3.3V to 1.8V Regulator
max
typ
min
Input voltage(V)
2
Output current(mA)
80