Datasheet

 2003-2013 Microchip Technology Inc. DS39609C-page 209
PIC18F6520/8520/6620/8620/6720/8720
FIGURE 18-6: SYNCHRONOUS TRANSMISSION
FIGURE 18-7: SYNCHRONOUS TRANSMISSION (THROUGH TXEN)
bit 0 bit 1 bit 7
Word 1
Q1Q2 Q3Q4 Q1 Q2Q3 Q4Q1 Q2Q3 Q4Q1 Q2Q3 Q4Q1 Q2 Q3Q4 Q3Q4 Q1Q2 Q3Q4 Q1Q2 Q3Q4 Q1Q2 Q3 Q4Q1 Q2 Q3 Q4Q1 Q2Q3 Q4Q1 Q2Q3 Q4
bit 2 bit 0 bit 1 bit 7
RC7/RX1/DT1
RC6/TX1/CK1
Write to
TXREG Reg
TXIF bit
(Interrupt Flag)
TRMT
TXEN bit
‘1’ ‘1’
Word 2
TRMT bit
Write Word 1
Write Word 2
Note: Sync Master mode; SPBRG = 0. Continuous transmission of two 8-bit words.
pin
pin
RC7/RX1/DT1 pin
RC6/TX1/CK1 pin
Write to
TXREG reg
TXIF bit
TRMT bit
bit 0
bit 1
bit 2
bit 6 bit 7
TXEN bit