Figure 332. I 2 S Philips Protocol Waveforms (16/32-Bit Full Accuracy, Cpol = 0); Figure 333. I 2 S Philips Standard Waveforms (24-Bit Frame With Cpol = 0); Figure 334. Transmitting 0X8Eaa33 - ST STM32F423 Reference Manual

Serial peripheral interface/ inter-IC sound (SPI/I2S)
Figure 332. I
Data are latched on the falling edge of CK (for the transmitter) and are read on the rising
edge (for the receiver). The WS signal is also latched on the falling edge of CK.
Figure 333. I
This mode needs two write or read operations to/from the SPIx_DR register.
•
In transmission mode:
If 0x8EAA33 has to be sent (24-bit):
•
In reception mode:
If data 0x8EAA33 is received:
962/1324
2
S Philips protocol waveforms (16/32-bit full accuracy, CPOL = 0)
2
S Philips standard waveforms (24-bit frame with CPOL = 0)

Figure 334. Transmitting 0x8EAA33

RM0430 Rev 8
RM0430