Espressif Systems ESP32 Technical Reference Manual page 64
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Also See for ESP32:
- Instruction set (103 pages) ,
- Hardware design manuallines (44 pages) ,
- Manual (29 pages)
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4.13 Registers
31
30
29
28
27
26
2
0
0
0
2
RTCIO_XTAL_X32N_DRV Select the drive strength of the pad. (R/W)
RTCIO_XTAL_X32N_HOLD Set to 1 to hold the output value on the pad, 0 for normal operation. (R/W)
RTCIO_XTAL_X32N_RDE 1: Pull-down on pad enabled; 0: Pull-down disabled. (R/W)
RTCIO_XTAL_X32N_RUE 1: Pull-up on pad enabled; 0: Pull-up disabled. (R/W)
RTCIO_XTAL_X32P_DRV Select the drive strength of the pad. (R/W)
RTCIO_XTAL_X32P_HOLD Set to 1 to hold the output value on the pad, 0 for normal operation. (R/W)
RTCIO_XTAL_X32P_RDE 1: Pull-down on pad enabled; 0: Pull-down disabled. (R/W)
RTCIO_XTAL_X32P_RUE 1: Pull-up on pad enabled; 0: Pull-up disabled. (R/W)
RTCIO_XTAL_DAC_XTAL_32K 32K XTAL bias current DAC value. (R/W)
RTCIO_XTAL_XPD_XTAL_32K Power up 32 KHz crystal oscillator. (R/W)
RTCIO_XTAL_X32N_MUX_SEL 1: route X32N pad to the digital IO_MUX, 0: route to RTC block. (R/W)
RTCIO_XTAL_X32P_MUX_SEL 1: route X32P pad to the digital IO_MUX, 0: route to RTC block. (R/W)
RTCIO_XTAL_X32N_FUN_SEL Select the RTC function. 0: select function0; 1: select function1. (R/W)
RTCIO_XTAL_X32N_SLP_SEL Sleep mode selection. Set this bit to 1 to put the pad to sleep. (R/W)
RTCIO_XTAL_X32N_SLP_IE Input enable of the pad in sleep mode. 1: enabled; 0: disabled. (R/W)
RTCIO_XTAL_X32N_SLP_OE Output enable of the pad. 1: enabled; 0: disabled. (R/W)
RTCIO_XTAL_X32N_FUN_IE Input enable of the pad. 1: enabled; 0: disabled. (R/W)
RTCIO_XTAL_X32P_FUN_SEL Select the RTC function. 0: select Function 0; 1: select Function 1. (R/W)
RTCIO_XTAL_X32P_SLP_SEL Sleep mode selection. Set this bit to 1 to put the pad to sleep. (R/W)
RTCIO_XTAL_X32P_SLP_IE Input enable of the pad in sleep mode. 1: enabled; 0: disabled. (R/W)
RTCIO_XTAL_X32P_SLP_OE Output enable of the pad in sleep mode. 1: enabled; 0: disabled. (R/W)
RTCIO_XTAL_X32P_FUN_IE Input enable of the pad. 1: enabled; 0: disabled. (R/W)
RTCIO_XTAL_DRES_XTAL_32K 32K XTAL resistor bias control. (R/W)
RTCIO_XTAL_DBIAS_XTAL_32K 32K XTAL self-bias reference control. (R/W)
Espressif Systems
Register 4.51: RTCIO_XTAL_32K_PAD_REG (0x0023)
25
24
23
22
21
20
19
18
17
0
0
0
0
1
0
0
0
16
15
14
13
12
11
10
9
0
0
0
0
0
0
63
ESP32 Technical Reference Manual V1.0
4 IO_MUX AND GPIO MATRIX
8
7
6
5
4
3
2
1
1
0
0
0
0
1
0
0
0
0
Reset
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