PIC16F870/871
TABLE 9-10: REGISTERS ASSOCIATED WITH SYNCHRONOUS SLAVE TRANSMISSION
Value on:
POR,
BOR
Value on all
other Resets
Address Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
(1)
0Ch
18h
19h
8Ch
98h
99h
PIR1
PSPIF
ADIF
RCIF
TXIF
—
CCP1IF TMR2IF TMR1IF 0000 -000 0000 -000
RCSTA
SPEN
RX9
SREN CREN ADDEN FERR
OERR
RX9D 0000 000x 0000 000x
TXREG USART Transmit Register
0000 0000 0000 0000
(1)
PIE1
PSPIE
CSRC
ADIE
TX9
RCIE
TXIE
—
—
CCP1IE TMR2IE TMR1IE 0000 -000 0000 -000
TXSTA
TXEN SYNC
BRGH
TRMT
TX9D 0000 -010 0000 -010
SPBRG Baud Rate Generator Register
0000 0000 0000 0000
Legend: x= unknown, -= unimplemented read as '0'. Shaded cells are not used for Synchronous Slave Transmission.
Note 1: Bits PSPIE and PSPIF are reserved on the PIC16F870; always maintain these bits clear.
TABLE 9-11: REGISTERS ASSOCIATED WITH SYNCHRONOUS SLAVE RECEPTION
Value on:
POR,
BOR
Value on all
other Resets
Address Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
(1)
0Ch
18h
1Ah
8Ch
98h
99h
PIR1
PSPIF
SPEN
ADIF
RX9
RCIF
TXIF
—
CCP1IF TMR2IF TMR1IF 0000 -000 0000 -000
RCSTA
SREN CREN ADDEN FERR
OERR
RX9D 0000 000x 0000 000x
RCREG USART Receive Register
0000 0000 0000 0000
(1)
PIE1
PSPIE
CSRC
ADIE
TX9
RCIE
TXIE
—
—
CCP1IE TMR2IE TMR1IE 0000 -000 0000 -000
TXSTA
TXEN SYNC
BRGH
TRMT
TX9D
0000 -010 0000 -010
0000 0000 0000 0000
SPBRG Baud Rate Generator Register
Legend: x= unknown, -= unimplemented read as '0'. Shaded cells are not used for Synchronous Slave Reception.
Note 1: Bits PSPIE and PSPIF are reserved on the PIC16F870, always maintain these bits clear.
1999 Microchip Technology Inc.
Preliminary
DS30569A-page 77
MICROCHIP [ MICROCHIP ]
