TRIMSIR Trim System Initilazation Registers 0x40005400 0x00 0x400 registers RTC RTC Trim System Initialization Register. 0x08 X1TRIM RTC X1 Trim. 16 5 X2TRIM RTC X2 Trim. 21 5 LOCK Lock. 31 1 SIMO SIMO Trim System Initialization Register. 0x34 read-only CLKDIV SIMO Clock Divide. 0 3 DIV1 0 DIV16 1 DIV32 3 DIV64 5 DIV128 7 IPOLO IPO Low Trim System Initialization Register. 0x3C read-only IPO_LIMITLO IPO Low Limit Trim. 0 8 CTRL Control Trim System Initialization Register. 0x40 VDDA_LIMITLO VDDA Low Trim Limit. 0 7 VDDA_LIMITHI VDDA High Trim Limit. 8 7 IPO_LIMITHI IPO High Trim Limit. 15 9 INRO_SEL INRO Clock Select. 24 2 8KHZ 0 16KHZ 1 30KHZ 2 INRO_TRIM INRO Clock Trim. 29 3 INRO RTC Trim System Initialization Register. 0x44 TRIM16K INRO 16KHz Trim. 0 3 TRIM30K INRO 30KHz Trim. 3 3 LPCLKSEL INRO Low Power Mode Clock Select. 6 2 8KHZ 0 16KHZ 1 30KHZ 2