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CD00253742 Datasheet, PDF (97/120 Pages) STMicroelectronics – XL-density performance line ARM-based 32-bit MCU
STM32F103xF, STM32F103xG
Electrical characteristics
Figure 50. I2S slave timing diagram (Philips protocol)(1)
CPOL = 0
tc(CK)
CPOL = 1
WS input
SDtransmit
SDreceive
tw(CKH)
tw(CKL)
th(WS)
tsu(WS)
LSB transmit(2)
tsu(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 51. I2S master timing diagram (Philips protocol)(1)
tf(CK)
tr(CK)
CPOL = 0
CPOL = 1
WS output
SDtransmit
SDreceive
tc(CK)
tw(CKH)
tv(WS)
tw(CKL)
th(WS)
LSB transmit(2)
MSB transmit
tv(SD_MT)
Bitn transmit
tsu(SD_MR)
LSB receive(2)
MSB receive
th(SD_MR)
Bitn receive
th(SD_MT)
LSB transmit
LSB receive
ai14884b
1. Based on characterization, 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 16554 Rev 3
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