Datasheet
PIC16F872
DS30221C-page 54 © 2006 Microchip Technology Inc.
REGISTER 9-3: SSPCON2: SYNC SERIAL PORT CONTROL REGISTER2 (ADDRESS: 91h)
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
GCEN ACKSTAT ACKDT ACKEN RCEN PEN RSEN SEN
bit 7 bit 0
bit 7 GCEN: General Call Enable bit (In I
2
C Slave mode only)
1 = Enable interrupt when a general call address (0000h) is received in the SSPSR
0 = General call address disabled
bit 6 ACKSTAT: Acknowledge Status bit (In I
2
C Master mode only)
In Master Transmit mode:
1 = Acknowledge was not received from slave
0 = Acknowledge was received from slave
bit 5 ACKDT: Acknowledge Data bit (In I
2
C Master mode only)
In Master Receive mode:
Value that will be transmitted when the user initiates an Acknowledge sequence at the end of
a receive.
1 = Not Acknowledge
0 = Acknowledge
bit 4 ACKEN: Acknowledge Sequence Enable bit (In I
2
C Master mode only)
In Master Receive mode:
1 = Initiate Acknowledge sequence on SDA and SCL pins, and transmit ACKDT data bit. Auto-
matically cleared by hardware.
0 = Acknowledge sequence IDLE
bit 3 RCEN: Receive Enable bit (In I
2
C Master mode only).
1 = Enables Receive mode for I
2
C
0 = Receive IDLE
bit 2 PEN: STOP Condition Enable bit (In I
2
C Master mode only)
SCK Release Control:
1 = Initiate STOP condition on SDA and SCL pins. Automatically cleared by hardware.
0 = STOP condition IDLE
bit 1 RSEN: Repeated START Condition Enabled bit (In I
2
C Master mode only)
1 = Initiate Repeated START condition on SDA and SCL pins. Automatically cleared by
hardware.
0 = Repeated START condition IDLE
bit 0 SEN: START Condition Enabled bit (In I
2
C Master mode only)
1 = Initiate START condition on SDA and SCL pins. Automatically cleared by hardware.
0 = START condition IDLE
Note: For bits ACKEN, RCEN, PEN, RSEN, SEN: If the I
2
C module is not in the IDLE
mode, this bit may not be set (no spooling), and the SSPBUF may not be written (or
writes to the SSPBUF are disabled).
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
- n = Value at POR ’1’ = Bit is set ’0’ = Bit is cleared x = Bit is unknown