PIC16LC771 datasheet(69/224 Pages) MICROCHIP

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Advance Information

DS41120C-page 69

PIC16C717/770/771

SYNC SERIAL PORT CONTROL REGISTER2 (SSPCON2: 91h)

R/W-0

GCEN

ACKSTAT

ACKDT

ACKEN

RCEN

PEN

RSEN

SEN

bit 7

bit 0

bit 7

GCEN: General Call Enable bit (In I2C Slave mode only)

= Enable interrupt when a general call address (0000h) is received in the SSPSR.

= General call address disabled.

bit 6

ACKSTAT: Acknowledge Status bit (In I2C Master mode only)

In Master Transmit mode:

= Acknowledge was not received from slave

= Acknowledge was received from slave

bit 5

ACKDT: Acknowledge Data bit (In I2C 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.

= Not Acknowledge (NACK)

= Acknowledge (ACK)

bit 4

ACKEN: Acknowledge Sequence Enable bit (In I2C Master mode only).

In Master Receive mode:

= Initiate Acknowledge sequence on SDA and SCL pins, and transmit ACKDT data bit.

Automatically cleared by hardware.

= Acknowledge sequence IDLE

bit 3

RCEN: Receive Enable bit (In I2C Master mode only).

= Enables Receive mode for I2C

= Receive IDLE

bit 2

PEN: STOP Condition Enable bit (In I2C Master mode only).

SCK Release Control

= Initiate STOP condition on SDA and SCL pins. Automatically cleared by hardware.

= STOP condition IDLE

bit 1

RSEN: Repeated START Condition Enabled bit (In I2C Master mode only)

= Initiate Repeated START condition on SDA and SCL pins. Automatically cleared by

hardware.

= Repeated START condition IDLE

bit 0

SEN: START Condition Enabled bit (In I2C Master mode only)

= Initiate START condition on SDA and SCL pins. Automatically cleared by hardware.

= START condition IDLE

Note:

For bits ACKEN, RCEN, PEN, RSEN, SEN: If the I2C 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

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