Datasheet

PIC16F72X/PIC16LF72X
DS41341E-page 160 © 2009 Microchip Technology Inc.
FIGURE 16-6: SYNCHRONOUS TRANSMISSION
FIGURE 16-7: SYNCHRONOUS TRANSMISSION (THROUGH TXEN)
TABLE 16-6: REGISTERS ASSOCIATED WITH SYNCHRONOUS MASTER TRANSMISSION
Name Bit 7 Bit 6Bit 5Bit 4Bit 3Bit 2Bit 1Bit 0
Value on
POR, BOR
Value on
all other
Resets
INTCON GIE PEIE
T0IE INTE RBIE T0IF INTF RBIF 0000 000x 0000 000x
PIE1
TMR1GIE ADIE RCIE TXIE SSPIE CCP1IE TMR2IE TMR1IE 0000 0000 0000 0000
PIR1
TMR1GIF ADIF RCIF TXIF SSPIF CCP1IF TMR2IF TMR1IF 0000 0000 0000 0000
RCSTA SPEN
RX9 SREN CREN ADDEN FERR OERR RX9D 0000 000x 0000 000x
SPBRG BRG7 BRG6 BRG5 BRG4 BRG3 BRG2 BRG1 BRG0 0000 0000 0000 0000
TRISC TRISC7 TRISC6
TRISC5 TRISC4 TRISC3 TRISC2 TRISC1 TRISC0 1111 1111 1111 1111
TXREG
AUSART Transmit Data Register 0000 0000 0000 0000
TXSTA CSRC TX9 TXEN SYNC
— BRGH TRMT TX9D 0000 -010 0000 -010
Legend: x = unknown, - = unimplemented read as ‘0’. Shaded cells are not used for Synchronous Master Transmission.
bit 0 bit 1 bit 7
Word 1
bit 2 bit 0 bit 1 bit 7
RX/DT
Write to
TXREG Reg
TXIF bit
(Interrupt Flag)
TXEN bit
‘1’ ‘1’
Word 2
TRMT bit
Write Word 1
Write Word 2
Note: Synchronous Master mode, SPBRG = 0, continuous transmission of two 8-bit words.
pin
TX/CK pin
RX/DT pin
TX/CK pin
Write to
TXREG reg
TXIF bit
TRMT bit
bit 0
bit 1
bit 2
bit 6 bit 7
TXEN bit