Inter-integrated circuit (I
2
C) interface RM0091
532/742 Doc ID 018940 Rev 1
23.7.9 PEC register (I2Cx_PECR)
Address offset: 0x20
Reset value: 0x0000 0000
Note: If the SMBus feature is not supported, this register is reserved and forced by hardware to
“0x00000000”. Please refer to Section 23.3: I2C implementation.
23.7.10 Receive data register (I2Cx_RXDR)
Address offset: 0x24
Reset value: 0x0000 0000
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res.
1514131211109876543210
Res. Res. Res. Res. Res. Res. Res. Res. PEC[7:0]
r
Bits 31:8 Reserved, must be kept at reset value.
Bits 7:0 PEC[7:0] Packet error checking register
This field contains the internal PEC when PECEN=1.
The PEC is cleared by hardware when PE=0 or when SWRST is set.
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res.
1514131211109876543210
Res. Res. Res. Res. Res. Res. Res. Res. RXDATA[7:0]
r
Bits 31:8 Reserved, must be kept at reset value.
Bits 7:0 RXDATA[7:0] 8-bit receive data
Data byte received from the I
2
C bus.
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