PIC18FXX20
FIGURE 18-6:
SYNCHRONOUS TRANSMISSION
Q1Q2 Q3Q4 Q1 Q2Q3 Q4Q1 Q2Q3 Q4Q1 Q2Q3 Q4Q1 Q2 Q3Q4
Q3Q4 Q1Q2 Q3Q4 Q1Q2 Q3Q4 Q1Q2 Q3 Q4Q1 Q2Q3 Q4Q1 Q2Q3 Q4Q1 Q2Q3 Q4
RC7/RX1/DT1
pin
bit 0
bit 1
Word 1
bit 2
bit 7
bit 0
bit 1
Word 2
bit 7
RC6/TX1/CK1
pin
Write to
TXREG Reg
Write Word1
Write Word2
TXIF bit
(Interrupt Flag)
TRMT
TRMT bit
'1'
'1'
TXEN bit
Note: Sync Master mode; SPBRG = 0. Continuous transmission of two 8-bit words.
FIGURE 18-7:
SYNCHRONOUS TRANSMISSION (THROUGH TXEN)
RC7/RX1/DT1 pin
bit0
bit2
bit1
bit6
bit7
RC6/TX1/CK1 pin
Write to
TXREG reg
TXIF bit
TRMT bit
TXEN bit
2003 Microchip Technology Inc.
Advance Information
DS39609A-page 209