Datasheet

 2010-2016 Microchip Technology Inc. DS40001412G-page 255
PIC18(L)F2X/4XK22
REGISTER 15-4: SSPxCON2: SSPx CONTROL REGISTER 2
R/W-0 R-0 R/W-0 R/S/HC-0 R/S/HC-0 R/S/HC-0 R/S/HC-0 R/W/HC-0
GCEN ACKSTAT ACKDT ACKEN
(1)
RCEN
(1)
PEN
(1)
RSEN
(1)
SEN
(1)
bit 7 bit 0
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
u = Bit is unchanged x = Bit is unknown -n/n = Value at POR and BOR/Value at all other Resets
‘1’ = Bit is set ‘0’ = Bit is cleared HC = Cleared by hardware S = User set
bit 7 GCEN: General Call Enable bit (in I
2
C Slave mode only)
1 = Enable interrupt when a general call address (0x00 or 00h) is received in the SSPxSR
0 = General call address disabled
bit 6 ACKSTAT: Acknowledge Status bit (in I
2
C mode only)
1 = Acknowledge was not received
0 = Acknowledge was received
bit 5 ACKDT: Acknowledge Data bit (in I
2
C mode only)
In Receive mode:
Value transmitted when the user initiates an Acknowledge sequence at the end of a receive
1 = Not Acknowledge
0 = Acknowledge
bit 4 ACKEN
(1)
: Acknowledge Sequence Enable bit (in I
2
C Master mode only)
In Master Receive mode:
1 = Initiate Acknowledge sequence on SDAx and SCLx pins, and transmit ACKDT data bit.
Automatically cleared by hardware.
0 = Acknowledge sequence idle
bit 3 RCEN
(1)
: Receive Enable bit (in I
2
C Master mode only)
1 = Enables Receive mode for I
2
C
0 = Receive idle
bit 2 PEN
(1)
: Stop Condition Enable bit (in I
2
C Master mode only)
SCKx Release Control:
1 = Initiate Stop condition on SDAx and SCLx pins. Automatically cleared by hardware.
0 = Stop condition Idle
bit 1 RSEN
(1)
: Repeated Start Condition Enabled bit (in I
2
C Master mode only)
1 = Initiate Repeated Start condition on SDAx and SCLx pins. Automatically cleared by hardware.
0 = Repeated Start condition Idle
bit 0 SEN
(1)
: Start Condition Enabled bit (in I
2
C Master mode only)
In Master mode:
1 = Initiate Start condition on SDAx and SCLx pins. Automatically cleared by hardware.
0 = Start condition Idle
In Slave mode:
1 = Clock stretching is enabled for both slave transmit and slave receive (stretch enabled)
0 = Clock stretching is disabled
Note 1: 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 SSPxBUF may not be written (or writes to the SSPxBUF are disabled).