SPRUIL1D May 2019 – December 2024 DRA829J , DRA829J-Q1 , DRA829V , DRA829V-Q1 , TDA4VM , TDA4VM-Q1
Some device pads have debounce logic. The following WKUP_CTRL_MMR0 registers are used to configure the debounce period:
The CTRLMMR_WKUP_DBOUNCE_CFG1 register contains the debounce period for pads with PADCONFIGx[13-11] DEBOUNCE_SEL fields set to 1h. The CTRLMMR_WKUP_DBOUNCE_CFG2 register contains the debounce period for pads with PADCONFIGx[13-11] DEBOUNCE_SEL fields set to 2h and so on. The CTRLMMR_WKUP_DBOUNCE_CFG6 register contains the debounce period for pads with PADCONFIGx[13-11] DEBOUNCE_SEL fields set to 6h.
The debounce logic is not associated with all signals that can be multiplexed on a pad. Only certain signals can use it.
For information about the PADCONFIGx registers, see Pad Configuration Registers.
Table 5-8 shows the debounce period values to load in the CTRLMMR_WKUP_DBOUNCE_CFGx[5-0] DB_CFG field.
The debounce clock selection should happen before the consumer of the debounced signals is enabled as the clock multiplexers for the debounce logic are NOT glitch-free.
CTRLMMR_WKUP_DBOUNCE_CFGx[5-0] DB_CFG Decimal Value | GPIO Case (32.768kHz(1)) | EQEP Case (20MHz(1)) | CTRLMMR_WKUP_DBOUNCE_CFGx[5-0] DB_CFG Decimal Value | GPIO Case (20MHz(1)) | EQEP Case (250MHz(1)) | |
---|---|---|---|---|---|---|
Delay[ms] | Delay[µs] | Delay[µs] | Delay[ns] | |||
0 | bypassed | bypassed | 32 | 0.05 | 4 | |
1 | 1.95 | 3.2 | 33 | 0.1 | 8 | |
2 | 2.93 | 4.8 | 34 | 0.15 | 12 | |
3 | 3.91 | 6.4 | 35 | 0.2 | 16 | |
4 | 4.88 | 8 | 36 | 0.25 | 20 | |
5 | 5.86 | 9.6 | 37 | 0.3 | 24 | |
6 | 6.84 | 11.2 | 38 | 0.35 | 28 | |
7 | 7.81 | 12.8 | 39 | 0.4 | 32 | |
8 | 8.79 | 14.4 | 40 | 0.45 | 36 | |
9 | 9.77 | 16 | 41 | 0.5 | 40 | |
10 | 10.74 | 17.6 | 42 | 0.55 | 44 | |
11 | 11.72 | 19.2 | 43 | 0.6 | 48 | |
12 | 12.7 | 20.8 | 44 | 0.65 | 52 | |
13 | 13.67 | 22.4 | 45 | 0.7 | 56 | |
14 | 14.65 | 24 | 46 | 0.75 | 60 | |
15 | 15.63 | 25.6 | 47 | 0.8 | 64 | |
16 | 16.6 | 27.2 | 48 | 0.85 | 68 | |
17 | 17.58 | 28.8 | 49 | 0.9 | 72 | |
18 | 18.55 | 30.4 | 50 | 0.95 | 76 | |
19 | 19.53 | 32 | 51 | 1 | 80 | |
20 | 20.51 | 33.6 | 52 | 1.05 | 84 | |
21 | 21.48 | 35.2 | 53 | 1.1 | 88 | |
22 | 15.63 | 25.6 | 54 | 25.6 | 2.048 | |
23 | 31.25 | 51.2 | 55 | 51.2 | 4.096 | |
24 | 46.88 | 76.8 | 56 | 76.8 | 6.144 | |
25 | 62.5 | 102.4 | 57 | 102.4 | 8.192 | |
26 | 78.13 | 128 | 58 | 128 | 10.24 | |
27 | 93.75 | 153.6 | 59 | 153.6 | 12.288 | |
28 | 109.38 | 179.2 | 60 | 179.2 | 14.336 | |
29 | 125 | 204.8 | 61 | 204.8 | 16.384 | |
30 | 140.63 | 230.4 | 62 | 230.4 | 18.432 | |
31 | 156.25 | 256 | 63 | 256 | 20.48 |