
2002 Microchip Technology Inc.
Preliminary
DS30485A-page 177
PIC18FXX39
FIGURE 17-6:
SYNCHRONOUS TRANSMISSION
FIGURE 17-7:
SYNCHRONOUS TRANSMISSION (THROUGH TXEN)
bit 0
bit 1
bit 7
Word 1
Q1 Q2 Q3Q4 Q1 Q2 Q3 Q4 Q1 Q2Q3 Q4 Q1 Q2 Q3 Q4Q1 Q2 Q3 Q4
Q3Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
bit 2
bit 0
bit 1
bit 7
RC7/RX/DT
RC6/TX/CK
Write to
TXREG Reg
TXIF bit
(Interrupt Flag)
TRMT
TXEN bit
'1'
Word 2
TRMT bit
Write Word1
Write Word2
Note:
Sync Master mode; SPBRG = '0'. Continuous transmission of two 8-bit words.
pin
RC7/RX/DT pin
RC6/TX/CK pin
Write to
TXREG reg
TXIF bit
TRMT bit
bit0
bit1
bit2
bit6
bit7
TXEN bit