Datasheet

PIC18F97J94 FAMILY
DS30575A-page 428  2012 Microchip Technology Inc.
FIGURE 21-11: SYNCHRONOUS TRANSMISSION
FIGURE 21-12: SYNCHRONOUS TRANSMISSION (THROUGH TXEN)
bit 0 bit 1 bit 7
Word 1
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1Q2 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
bit 2 bit 0 bit 1 bit 7
TX1/CK1 Pin
Write to
TxREG1 Reg
Tx1IF bit
(Interrupt Flag)
TXEN bit
‘1’ ‘1’
Word 2
TRMT bit
Write Word 1
Write Word 2
Note: Sync Master mode, SPBRGx = 0, continuous transmission of two 8-bit words. This example is equally applicable to EUSART2 (TX2/CK2
and RX2/DT2).
RX1/DT1 Pin
(TXCKP = 0)
TX1/CK1 Pin
(TXCKP = 1)
RX1/DT1 Pin
TX1/CK1 Pin
Write to
TXREG1 reg
TX1IF bit
TRMT bit
bit 0
bit 1
bit 2
bit 6 bit 7
TXEN bit
Note: This example is equally applicable to EUSART2 (TX2/CK2 and RX2/DT2).