User's Manual

RB9500 Designer’s Guide (01-30-16) 18
RD State Machine
Control Register Table & Description
RB9500contains 51 x 8-bit control registers. MCU can access those control registers via
3-wire (SCS, SCK, SDIO) or 4-wire (SCS, SCK, SDIO, GIO1/GIO2) SPI interface (support
max. SPI data rate up to 10 Mbps). RB9500is simply controlled by registers and outputs its
status to MCU by GIO1 and GIO2 pins. See datasheet for the details.