Datasheet

 2002-2013 Microchip Technology Inc. DS30487D-page 109
PIC16F87/88
TABLE 11-10: REGISTERS ASSOCIATED WITH SYNCHRONOUS MASTER TRANSMISSION
FIGURE 11-9: SYNCHRONOUS TRANSMISSION
FIGURE 11-10: SYNCHRONOUS TRANSMISSION (THROUGH TXEN)
Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Value on:
POR, BOR
Value on
all other
Resets
0Bh, 8Bh,
10Bh,18Bh
INTCON GIE PEIE
TMR0IE INT0IE RBIE TMR0IF INT0IF RBIF 0000 000x 0000 000u
0Ch PIR1
— ADIF
(1)
RCIF TXIF SSPIF CCP1IF TMR2IF TMR1IF -000 0000 -000 0000
18h RCSTA SPEN
RX9 SREN CREN ADDEN FERR OERR RX9D 0000 000x 0000 000x
19h TXREG AUSART Transmit Data Register 0000 0000 0000 0000
8Ch PIE1
— ADIE
(1)
RCIE TXIE SSPIE CCP1IE TMR2IE TMR1IE -000 0000 -000 0000
98h TXSTA CSRC TX9 TXEN SYNC
— BRGH TRMT TX9D 0000 -010 0000 -010
99h SPBRG Baud Rate Generator Register 0000 0000 0000 0000
Legend: x = unknown, - = unimplemented, read as ‘0’. Shaded cells are not used for synchronous master transmission.
Note 1: This bit is only implemented on the PIC16F88. The bit will read ‘0’ on the PIC16F87.
bit 0 bit 1 bit 7
Word 1
Q1Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1Q2Q3 Q4Q1Q2 Q3 Q4Q1 Q2 Q3 Q4 Q3 Q4 Q1Q2 Q3Q4 Q1Q2 Q3 Q4 Q1Q2Q3 Q4Q1 Q2Q3 Q4 Q1Q2 Q3 Q4 Q1 Q2 Q3 Q4
bit 2 bit 0 bit 1 bit 7
RB2/SDO/
RB5/SS
/TX/
Write to
TXREG Reg
TXIF bit
(Interrupt Flag)
TXEN bit
‘1’ ‘1’
Word 2
TRMT bit
Write Word 1
Write Word 2
Note: Sync Master mode; SPBRG = 0. Continuous transmission of two 8-bit words.
RX/DT pin
CK pin
RB2/SDO/RX/DT pin
RB5/SS
/TX/CK pin
Write to
TXREG Reg
TXIF bit
TRMT bit
bit 0
bit 1
bit 2
bit 6 bit 7
TXEN bit