MCBSTM32EXL Keil, MCBSTM32EXL Datasheet - Page 606

• Manufacturer Part Number: MCBSTM32EXL
• Description: BOARD EVALUATION FOR STM32F103ZE
• Manufacturer: Keil

Specifications of MCBSTM32EXL

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Serial peripheral interface (SPI)
Note:
606/995
PCM standard
For the PCM standard, there is no need to use channel-side information. The two PCM
modes (short and long frame) are available and configurable using the PCMSYNC bit in
SPI_I2SCFGR.
Figure 227. PCM standard waveforms (16-bit)
For long frame synchronization, the WS signal assertion time is fixed 13 bits in master
mode.
For short frame synchronization, the WS synchronization signal is only one cycle long.
Figure 228. PCM standard waveforms (16-bit extended to 32-bit packet frame)
For both modes (master and slave) and for both synchronizations (short and long), the
number of bits between two consecutive pieces of data (and so two synchronization signals)
needs to be specified (DATLEN and CHLEN bits in the SPI_I2SCFGR register) even in slave
mode.
short
frame
CK
short
frame
WS
long
frame
WS
CK
WS
long
frame
WS
SD
SD
MSB
MSB
up to 13-bit
Doc ID 13902 Rev 9
up to 13-bit
16-bit
16-bit
LSB
LSB MSB
RM0008