STM32F051K4U6 Datasheet, PDF (90/104 Pages) STMicroelectronics – Low- and medium-density advanced ARM™-based 32-bit MCU with 16 to 64 Kbytes Flash, timers, ADC, DAC and comm. interfaces

STM32F051x
Figure 29. I2S slave timing diagram (Philips protocol)
tc(CK)
CPOL = 0
Electrical characteristics
CPOL = 1
WS input
SDtr_ansmit
SDreceive
tw(CKH)
tw(CKL)
th(W_S)
t_su(WS)
LSB transmit⁽²⁾
t_{su(SD_SR)}
LSB receive⁽²⁾
MSB transmit
MSB receive
tv(_{SD_ST)}
Bitn transmit
th(_{SD_SR)}
Bitn receive
th(_{SD_ST)}
LSB transmit
LSB receive
ai14881b
1. Measurement points are done at CMOS levels: 0.3 × VDD and 0.7 × VDD.
2. LSB transmit/receive of the previously transmitted byte. No LSB transmit/receive is sent before the first
byte.
Figure 30. I2S master timing diagram (Philips protocol)
tf(CK)
tr(CK)
CPOL = 0
CPOL = 1
WS output
SDtr_ansmit
SDreceive
tc(CK)
tw(CKH)
tv(W_S)
tw(CKL)
th(W_S)
tv(_{SD_MT)}
LSB transmit⁽²⁾
MSB transmit
Bitn transmit
t_{su(SD_MR)}
LSB receive⁽²⁾
MSB receive
th(_{SD_MR)}
Bitn receive
th(_{SD_MT)}
LSB transmit
LSB receive
ai14884b
1. Data based on characterization results, not tested in production.
2. LSB transmit/receive of the previously transmitted byte. No LSB transmit/receive is sent before the first
byte.
Doc ID 022265 Rev 3
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