C8051F561-IQR Silicon Labs, C8051F561-IQR Datasheet - Page 248

• Manufacturer Part Number: C8051F561-IQR
• Description: 8-bit Microcontrollers - MCU 50 MIPS 32 kB 2 kB CAN2.0 SPI
• Manufacturer: Silicon Labs

Specifications of C8051F561-IQR

• Rohs: yes
• Core: 8051
• Data Bus Width: 8 bit
• Processor Series: C8051

C8051F55x/56x/57x
24.6. SPI Special Function Registers
SPI0 is accessed and controlled through four special function registers in the system controller: SPI0CN
Control Register, SPI0DAT Data Register, SPI0CFG Configuration Register, and SPI0CKR Clock Rate
Register. The four special function registers related to the operation of the SPI0 Bus are described in the
following figures.
248
SCK
(CKPOL=0, CKPHA=0)
SCK
(CKPOL=1, CKPHA=0)
MOSI
MISO
NSS (4-Wire Mode)
SCK
(CKPOL=0, CKPHA=1)
SCK
(CKPOL=1, CKPHA=1)
MOSI
MISO
NSS (4-Wire Mode)
Figure 24.6. Slave Mode Data/Clock Timing (CKPHA = 0)
Figure 24.7. Slave Mode Data/Clock Timing (CKPHA = 1)
MSB
MSB
MSB
MSB
Bit 6
Bit 6
Bit 6
Bit 6
Bit 5
Bit 5
Bit 5
Bit 5
Rev. 1.1
Bit 4
Bit 4
Bit 4
Bit 4
Bit 3
Bit 3
Bit 3
Bit 3
Bit 2
Bit 2
Bit 2
Bit 2
Bit 1
Bit 1
Bit 1
Bit 1
Bit 0
Bit 0
Bit 0
Bit 0