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ISD91200 Series Technical Reference Manual
Release Date: Sep 16, 2019
- 225 -
Revision 2.4
SPI0_MOSI0 and SPI0_MOSI1 pin, same as Master mode.
SPI Controller
Master
SPICLKx
MISOx[1:0]
MOSIx[1:0]
SPISSx0
SPISSx1
Slave 0
SCLK
MISO
MOSI
SS
Slave 1
SCLK
MISO
MOSI
SS
MISOx[0]
MISOx[1]
MOSIx[0]
MOSIx[1]
Figure 5-41 2-Bit Mode System Architecture
SPI_CLK
SPI_SS
CLKP=0
CLKP=1
SS_LVL=0
SS_LVL=1
SPI_MOSI0
SPI_MISO0
TX0[30]
TX0[16]
TX0[15]
TX0[14]
LSB
TX0[0]
RX0[30]
RX0[16]
RX0[14]
LSB
RX0[0]
MSB
RX0[31]
RX0[15]
MSB
TX0[31]
SPI_MOSI1
SPI_MISO1
TX1[30]
TX1[16]
TX1[15]
TX1[14]
LSB
TX1[0]
RX1[30]
RX1[16]
RX1[14]
LSB
RX1[0]
MSB
RX1[31]
RX1[15]
MSB
TX1[31]
Figure 5-42 2-Bit Mode (Slave Mode)
5.9.4.16
Dual/Quad I/O Mode
The SPI controller supports dual and quad I/O transfer when setting the DUALIOEN bit or the
QUADIOEN bit (SPI0_CTL[21], SPI0_CTL[22]) to 1. Many SPI Serial Flash devices support Dual/ Quad