PIC18F6520-I Datasheet, PDF (211/380 Pages) Micrel Semiconductor – 64/80-Pin High-Performance, 256 Kbit to 1 Mbit Enhanced Flash Microcontrollers with A/D

PIC18F6520/8520/6620/8620/6720/8720
FIGURE 18-6:
SYNCHRONOUS TRANSMISSION
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
RC7/RX1/DT1
pin
RC6/TX1/CK1
pin
bit 0
bit 1
bit 2
Word 1
Write to
TXREG Reg
TXIF bit
(Interrupt Flag)
Write Word 1
Write Word 2
TRM^TT^Rb^Mit^T
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 7
bit 0
bit 1
bit 7
Word 2
‘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
bit 0
bit 1
bit 2
bit 6
bit 7
RC6/TX1/CK1 pin
Write to
TXREG reg
TXIF bit
TRMT bit
TXEN bit
 2004 Microchip Technology Inc.
DS39609B-page 209