PIC18CXX8
FIGURE 16-6: SYNCHRONOUS TRANSMISSION
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
RC7/RX/DT
Bit 0
Bit 1
Bit 2
Bit 7
Bit 0
Bit 1
Bit 7
pin
Word 1
Word 2
RC6/TX/CK
pin
Write to
TXREG reg
TXIF bit
(Interrupt flag)
Write Word 1
Write Word 2
TRMT bitTRMT
’1’
’1’
TXEN bit
Note: Sync Master mode; SPBRG = ’0’; continuous transmission of two 8-bit words.
FIGURE 16-7: SYNCHRONOUS TRANSMISSION (THROUGH TXEN)
RC7/RX/DT pin
bit0
bit1
bit2
bit6
bit7
RC6/TX/CK pin
Write to
TXREG reg
TXIF bit
TRMT bit
TXEN bit
DS30475A-page 178
Advanced Information
2000 Microchip Technology Inc.