PIC18F23K22 Datasheet, PDF (261/492 Pages) Microchip Technology – 28/40/44-Pin, Low-Power, High-Performance Microcontrollers with nanoWatt XLP Technology

PIC18(L)F2X/4XK22
REGISTER 15-6: SSPXADD: MSSPx ADDRESS AND BAUD RATE REGISTER (I²C MODE)
R/W-0
bit 7
R/W-0
R/W-0
R/W-0
R/W-0
ADD<7:0>
R/W-0
R/W-0
R/W-0
bit 0
Legend:
R = Readable bit
u = Bit is unchanged
‘1’ = Bit is set
W = Writable bit
x = Bit is unknown
‘0’ = Bit is cleared
U = Unimplemented bit, read as ‘0’
-n/n = Value at POR and BOR/Value at all other Resets
Master mode:
bit 7-0
ADD<7:0>: Baud Rate Clock Divider bits
SCLx pin clock period = ((ADD<7:0> + 1) *4)/FOSC
10-Bit Slave mode — Most Significant Address byte:
bit 7-3
bit 2-1
bit 0
Not used: Unused for Most Significant Address byte. Bit state of this register is a “don’t care”. Bit
pattern sent by master is fixed by I²C specification and must be equal to ‘11110’. However, those bits
are compared by hardware and are not affected by the value in this register.
ADD<2:1>: Two Most Significant bits of 10-bit address
Not used: Unused in this mode. Bit state is a “don’t care”.
10-Bit Slave mode — Least Significant Address byte:
bit 7-0
ADD<7:0>: Eight Least Significant bits of 10-bit address
7-Bit Slave mode:
bit 7-1
bit 0
ADD<7:1>: 7-bit address
Not used: Unused in this mode. Bit state is a “don’t care”.
 2010 Microchip Technology Inc.
Preliminary
DS41412B-page 261