PIC24F32KA302-ISLASHML datasheet(172/364 Pages) MICROCHIP

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PIC24FV32KA304 FAMILY

DS39995D-page 172

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I2CxCON: I2Cx CONTROL REGISTER

R/W-0

U-0

R/W-0

R/W-1, HC

R/W-0

I2CEN

—

I2CSIDL

SCLREL

IPMIEN

A10M

DISSLW

SMEN

bit 15

bit 8

R/W-0

R/W-0, HC

GCEN

STREN

ACKDT

ACKEN

RCEN

PEN

RSEN

SEN

bit 7

bit 0

Legend:

HC = Hardware Clearable bit

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

bit 15

I2CEN: I2Cx Enable bit

1 = Enables the I2Cx module, and configures the SDAx and SCLx pins as serial port pins

0 = Disables the I2Cx module; all I2C™ pins are controlled by port functions

bit 14

Unimplemented: Read as ‘0’

bit 13

I2CSIDL: I2Cx Stop in Idle Mode bit

1 = Discontinues module operation when the device enters an Idle mode

0 = Continues module operation in Idle mode

bit 12

SCLREL: SCLx Release Control bit (when operating as I2C slave)

1 = Releases SCLx clock

0 = Holds SCLx clock low (clock stretch)

If STREN = 1:

The bit is R/W (i.e., software may write ‘0’ to initiate stretch and write ‘1’ to release clock). Hardware is

clear at the beginning of the slave transmission. Hardware is clear at the end of slave reception.

If STREN = 0:

The bit is R/S (i.e., software may only write ‘1’ to release clock). Hardware is clear at the beginning of

slave transmission.

bit 11

IPMIEN: Intelligent Peripheral Management Interface (IPMI) Enable bit

1 = IPMI Support mode is enabled; all addresses are Acknowledged

0 = IPMI Support mode is disabled

bit 10

A10M: 10-Bit Slave Addressing bit

1 = I2CxADD is a 10-bit slave address

0 = I2CxADD is a 7-bit slave address

bit 9

DISSLW: Disable Slew Rate Control bit

1 = Slew rate control is disabled

0 = Slew rate control is enabled

bit 8

SMEN: SMBus Input Levels bit

1 = Enables I/O pin thresholds compliant with the SMBus specification

0 = Disables the SMBus input thresholds

bit 7

GCEN: General Call Enable bit (when operating as I2C slave)

1 = Enables interrupt when a general call address is received in the I2CxRSR (module is enabled for

reception)

0 = General call address is disabled

bit 6

STREN: SCLx Clock Stretch Enable bit (when operating as I2C slave)

Used in conjunction with the SCLREL bit.

1 = Enables software or receives clock stretching

0 = Disables software or receives clock stretching

PIC24F32KA302-I/ML Datasheet(PDF) 172 Page - Microchip Technology

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