MCP19124 datasheet(198/236 Pages) MICROCHIP

198 / 236 page

MCP19124/5

DS20005619A-page 198

 2016 Microchip Technology Inc.

SSPMSK1: SSP MASK REGISTER 1

R/W-1

MSK<7:1>

MSK0

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 = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

bit 7-1

MSK<7:1>: Mask bits

= The received address bit n is compared to SSPADD<n> to detect I2C address match

= The received address bit n is not used to detect I2C address match

bit 0

MSK0: Mask bit for I2C Slave mode, 10-bit Address

I2C Slave mode, 10-bit address (SSPM<3:0> = 0111 or 1111):

= The received address bit 0 is compared to SSPADD0 to detect I2C address match

= The received address bit 0 is not used to detect I2C address match I2C Slave mode, 7-bit address,

the bit is ignored

SSPADD: MSSP ADDRESS AND BAUD RATE REGISTER 1

R/W-0

ADD<7:0>

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 = Value at POR

‘1’

= Bit is set

‘0’

= Bit is cleared

Master mode:

bit 7-0

ADD<7:0>: Baud Rate Clock Divider bits

SCL pin clock period = ((ADD<7:0> + 1) x 4)/FOSC

10-Bit Slave mode – Most Significant Address byte:

bit 7-3

Not used: Unused for Most Significant Address byte. Bit state of this register is a “don’t care”. Bit

pattern sent by master is fixed by I2C specification and must be equal to ‘11110’. However, those bits

are compared by hardware and are not affected by the value in this register.

bit 2-1

ADD<2:1>: Two Most Significant bits of 10-bit address.

bit 0

Not used: Unused in this mode. Bit state is a “don’t care”.

10-Bit Slave mode – Least Significant Address byte:

bit 7-0

ADD<7:0>: Eight Least Significant bits of 10-bit address

7-Bit Slave mode:

bit 7-1

ADD<7:1>: 7-bit address

bit 0

Not used: Unused in this mode. Bit state is a “don’t care”.

MCP19124 Datasheet(PDF) 198 Page - Microchip Technology

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