NBBFC Non Battery-Backed Function Control Register. 0x40000800 0x00 0x400 registers REG0 Register 0. 0x00 read-write RDSGCSEL Hyperbus RDS Gray Code Select. 0 6 RDSGCSET Hyperbus RDS Set. 6 1 internal Select internal setting. 0 gray_code Select gray code. 1 HYPCGDLY Hyperbus Clock Generator Delay. 8 6 USBRCKSEL USB Reference Clock Select. 16 1 sys Generated clock from system clock. 0 dig Digital clock from a GPIO. 1 QSPI0SEL QSPI0 Function Select. 17 1 med Select SPI Medical functions. 0 qspi0 Select QSPI0 function. 1 I2C0DGEN0 I2C0 SDA Glitch Filter Enable. 20 1 dis Filter disabled. 0 en Filter enabled. 1 I2C0DGEN1 I2C0 SCL Glitch Filter Enable. 21 1 dis Filter disabled. 0 en Filter enabled. 1 I2C1DGEN0 I2C1 SDA Glitch Filter Enable. 22 1 dis Filter disabled. 0 en Filter enabled. 1 I2C1DGEN1 I2C1 SCL Glitch Filter Enable. 23 1 dis Filter disabled. 0 en Filter enabled. 1 REG1 Register 1. 0x04 read-write ACEN Auto-calibration Enable. 0 1 dis Disabled. 0 en Enabled. 1 ACRUN Autocalibration Run. 1 1 not Not Running. 0 run Running. 1 LDTRM Load Trim. 2 1 GAININV Invert Gain. 3 1 not Not Running. 0 run Running. 1 ATOMIC Atomic mode. 4 1 not Not Running. 0 run Running. 1 MU MU value. 8 12 REG2 Register 2. 0x08 read-write INTTRIM Initial Trim Setting. 0 9 MINTRM Minimum Trim Setting. 10 9 MAXTRM Maximum Trim Setting. 20 9 REG3 Register 3. 0x0C read-write DONECNT Automatic Calibration Done Counter Setting. 0 8