ISD91200 Series Technical Reference Manual
Release Date: Sep 16, 2019
- 29 -
Revision 2.4
5.2.5
System Manager Control Registers
Register
Offset
R/W
Description
Reset Value
SYS Base Address:
SYS_BA = 0x5000_0000
SYS_PDID
0x00
R
Product ID
0xXXXX_XXXX
SYS_RSTSTS
0x04
R/W
System Reset Source Register
0x0000_0XXX
SYS_IPRST0
0x08
R/W
IP Reset Control Resister0
0x0000_0000
SYS_IPRST1
0x0C
R/W
IP Reset Control Resister1
0x0000_0000
SYS_GPSMTEN
0x30
R/W
GPIOA/B input type control register
0xFFFF_0000
SYS_GPA_MFP
0x38
R/W
GPIOA multiple alternate functions control register
0x0000_0000
SYS_GPB_MFP
0x3C
R/W
GPIOB multiple alternate functions control register
0x0000_0000
SYS_WKCTL
0x54
R/W
WAKEUP pin control register
0x0000_0006
SYS_REGLCTL
0x100
R/W
Register Lock Control
0x0000_0000
SYS_IRCTCTL
0x110
R/W
Oscillator Frequency Adjustment control register
0xXXXX_XXXX
SYS_OSC10KTRIM
0x114
R/W
10kHz Oscillator (LIRC) Trim Register
0xXXXX_XXXX
SYS_OSCTRIM0
0x118
R/W
Internal oscillator trim register 0
0xXXXX_XXXX
SYS_OSCTRIM1
0x11C
R/W
Internal oscillator trim register 1
0xXXXX_XXXX
SYS_OSCTRIM2
0x120
R/W
Internal oscillator trim register 2
0xXXXX_XXXX
SYS_XTALTRIM
0x124
R/W
External Crystal oscillator trim register
0xXXXX_XXXX
Reserved
0x128
R/W
System reserved, keep POR value
0xXXXX_XXXX
Note: In BSP register structure, the prefix is structure name, and register be no prefix, for example
SYS_ is the prefix, SYS_XTALTRIM will be SYS->XTALTRIM