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| PIC18F2220 Datasheet, PDF (209/388 Pages) Microchip Technology – 28/40/44-Pin High-Performance, Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology | |||
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PIC18F2220/2320/4220/4320
FIGURE 18-7:
SYNCHRONOUS TRANSMISSION (THROUGH TXEN)
RC7/RX/DT pin
bit 0
bit 1
bit 2
bit 6
bit 7
RC6/TX/CK pin
Write to
TXREG reg
TXIF bit
TRMT bit
TXEN bit
TABLE 18-8: REGISTERS ASSOCIATED WITH SYNCHRONOUS MASTER TRANSMISSION
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
INTCON GIE/
GIEH
PIR1
PSPIF(1)
PIE1
PSPIE(1)
IPR1
PSPIP(1)
PEIE/
GIEL
ADIF
ADIE
ADIP
TMR0IE INT0IE
RCIF
RCIE
RCIP
TXIF
TXIE
TXIP
RBIE
SSPIF
SSPIE
SSPIP
TMR0IF INT0IF RBIF
CCP1IF TMR2IF TMR1IF
CCP1IE TMR2IE TMR1IE
CCP1IP TMR2IP TMR1IP
0000 000x
0000 0000
0000 0000
1111 1111
0000 000u
0000 0000
0000 0000
1111 1111
RCSTA SPEN RX9 SREN CREN ADDEN FERR OERR RX9D 0000 -00x 0000 -00x
TXREG USART Transmit Register
0000 0000 0000 0000
TXSTA CSRC TX9 TXEN SYNC â BRGH TRMT TX9D 0000 -010 0000 -010
SPBRG Baud Rate Generator Register
0000 0000 0000 0000
Legend: x = unknown, - = unimplemented, read as â0â. Shaded cells are not used for synchronous master transmission.
Note 1: The PSPIF, PSPIE and PSPIP bits are reserved on the PIC18F2X20 devices; always maintain these bits clear.
 2003 Microchip Technology Inc.
DS39599C-page 207
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