Figure 6.14-11 Automatic Slave Selection (Ssactpol = 0, Suspitv < 0X3) - Nuvoton ISD94124BYI Technical Reference Manual

SS1 and SS
(SPIn_SSCTL[1:0])
TXEMPTY
(SPIn_STATUS[16])
SPIx_SSy pin
SPIx_CLK pin
Note:
n, x: Controller number (x = 0, 1, 2), y: Slave selection pin channel number in SPI0 (y = 0, 1)
Figure 6.14-11 Automatic Slave Selection (SSACTPOL = 0, SUSPITV < 0x3)
6.14.5.3 Byte Reorder and Suspend Function
When the transfer is set as MSB first (LSB = 0) and the REORDER (SPIn_CTL[19]) is set to 1, the
data stored in the TX buffer and RX buffer will be rearranged in the order as [Byte0, Byte1, Byte2,
Byte3] in 32-bit transfer (DWIDTH = 0). The sequence of transmitted/received data will be Byte0,
Byte1, Byte2, and then Byte3. If the DWIDTH is set as 24-bit transfer mode, the data in TX buffer
and RX buffer will be rearranged as [unknown byte, Byte0, Byte1, Byte2]. The SPI controller will
transmit/receive data with the sequence of Byte0, Byte1 and then Byte2. Each byte will be
transmitted/received with MSB first. The rule of 16-bit mode is the same as above. Byte Reorder
function is only available when DWIDTH is configured as 16, 24, and 32 bits.
Sep 9, 2019
ISD94100 Series Technical Reference Manual
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