5.6.4.15 DCDC1 Register (offset = 0x16) [reset = 0x99]
DCDC1 is shown in Figure 5-50 and described in Table 5-22.
Return to Summary Table.
Note 1: This register is password protected. For more information, see Section 5.6.1.
Note 2: A 5-ms blanking time of the overvoltage and undervoltage monitoring occurs when a write is performed on the DCDC1 register.
Note 3: To change the output voltage of DCDC1, the GO bit or the GODSBL bit must be set to 1b in register 0x1A.
Figure 5-50 DCDC1 Register
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
PFM |
RESERVED |
DCDC1 |
R/W-1b |
R-0b |
R/W-19h |
Table 5-22 DCDC1 Register Field Descriptions
Bit |
Field |
Type |
Reset |
Description |
7 |
PFM |
R/W |
1b |
Pulse Frequency Modulation (PFM, also known as pulse-skip-mode) enable. PFM mode improves light-load efficiency. Actual PFM mode operation depends on load condition.
0b = Disabled (forced PWM)
1b = Enabled
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6 |
RESERVED |
R |
0b |
|
5-0 |
DCDC1 |
R/W, E2 |
19h |
DCDC1 output voltage setting
0h = 0.850
1h = 0.860
2h = 0.870
3h = 0.880
4h = 0.890
5h = 0.900
6h = 0.910
7h = 0.920
8h = 0.930
9h = 0.940
Ah = 0.950
Bh = 0.960
Ch = 0.970
Dh = 0.980
Eh = 0.990
Fh = 1.000
10h = 1.010
11h = 1.020
12h = 1.030
13h = 1.040
14h = 1.050
15h = 1.060
16h = 1.070
17h = 1.080
18h = 1.090
19h = 1.100
1Ah = 1.110
1Bh = 1.120
1Ch = 1.130
1Dh = 1.140
1Eh = 1.150
1Fh = 1.160
20h = 1.170
21h = 1.180
22h = 1.190
23h = 1.200
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24h = 1.210
25h = 1.220
26h = 1.230
27h = 1.240
28h = 1.250
29h = 1.260
2Ah = 1.270
2Bh = 1.280
2Ch = 1.290
2Dh = 1.300
2Eh = 1.310
2Fh = 1.320
30h = 1.330
31h = 1.340
32h = 1.350
33h = 1.375
34h = 1.400
35h = 1.425
36h = 1.450
37h = 1.475
38h = 1.500
39h = 1.525
3Ah = 1.550
3Bh = 1.575
3Ch = 1.600
3Dh = 1.625
3Eh = 1.650
3Fh = 1.675
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