SONIX SN32F264 - Multi-Frame; Auto-Sel

SN32F260 Series
32-Bit Cortex-M0 Micro-Controller
SONiX TECHNOLOGY CO., LTD Page 91 Version 1.5
8.4.2.2 MULTI-FRAME
SCK
CS
DATA
F0
msb
F0 F0 F0
lsb
F1
msb
F1 F1 F1
lsb
CS
DATA
F0
msb
F0 F0 F0
lsb
F1
msb
F1 F1 F1
lsb
SCK
SCK
SCK
SCK
CPOL=0
CPHA=1
CPOL=1
CPHA=0
CPOL=1
CPHA=1
CPOL=0
CPHA=0
SPI
TI
8.5 AUTO-SEL
The Auto-SEL function is disabled by default, and Auto-SEL data flow is controlled by HW if enabled.
If Auto-SEL function is disabled (SELDIS = 1), HW does NOT control SELn pin at all, SELn pin is GPIO.
If Auto-SEL function is enabled (SELDIS = 0), SPI HW controls the SELn activity.