36.5.4 I2CxCON3

I2C Control Register 3
Name: I2CxCON3
Address: 0x01E9

Bit 76543210 
    BFREDRFME[1:0]ACNTMD[1:0] 
Access R/WR/WR/WR/WR/W 
Reset 00000 

Bit 4 – BFREDR Bus Free Time Divider Ratio

Selects the divider ratio for Bus Free Time selection. See BFRET bits for more information.

Bits 3:2 – FME[1:0] Fast Mode Enable

ValueDescription
11 Reserved
10 Fast Mode Plus (SCL frequency (FSCL) = FI2CxCLK/16)
01 Fast Mode (SCL frequency (FSCL) = FI2CxCLK/4)
00 Standard Mode (SCL frequency (FSCL) = FI2CxCLK/5)

Bits 1:0 – ACNTMD[1:0] ACNT Mode Selection

ValueNameDescription
xx ACNT = 0 ACNTMD bits ignored
11 ACNT = 1 Reserved
10 ACNT = 1 16 bits are loaded into I2CxCNT[15:0]
01 ACNT = 1 8 bits are loaded into I2CxCNT[15:8]
00 ACNT = 1 8 bits are loaded into I2CxCNT[7:0]