SN32F280 Series
32-Bit Cortex-M0 Micro-Controller
SONiX TECHNOLOGY CO., LTD
Page 65
Version 1.1
1: Enable. (The noise on IC VDD 5V domain detected by NDT5V IP will
trigger.NDT interrupt IRQ0)
0
Reserved
R
0
3.3.12 Noise Detect Status register (SYS0_NDTSTS)
Address Offset: 0x2C
Bit
Name
Description
Attribute
Reset
31:2
Reserved
R
0
1
NDT5V_DET
Power noise status of NDT5V IP.
0: No power noise is detected.
1: Power noise is detected by NDT5V IP.
*Cleared by write 1 to SYS0_NDTSTS[1]
R/W
0
0
Reserved
R
0
3.3.13 Anti-EFT Ability Control register (SYS0_ANTIEFT)
Address Offset: 0x30
This register decides the HW anti-EFT ability.
Bit
Name
Description
Attribute
Reset
31:3
Reserved
R
0
2:0
AEFT[2:0]
HW anti-EFT ability.
000: No
010: Low
011: Medium
100: Strong
R/W
000
3.3.14 IHRC Frequency Adjustment register (SYS0_IHRCADJ)
Address Offset: 0x34
Total 400 counts available for IHRC frequency adjusting, and each step varies b/-0.2% from +/-0.3%.
Bit
Name
Description
Attribute
Reset
31:16
SYSKEY[15:0]
System register key
Read as 0. Behavior of writing to this register is ignored unless writing
0xA5A5 to SYSKEY at the same time.
W
0
15:12
Reserved
R
0
11:4
ADJ[7:0]
IHRC frequency adjusting bits.
R/W
0
3:2
Reserved
R
0
1
DIR
IHRC frequency adjusting direction bit
0: Positive
1: Negative
R/W
0
0
ADJEN
IHRC frequency adjustment enable bit
0: Disable
1: Enable
R/W
0