DSPIC33EP128GS708 datasheet(241/484 Pages) MICROCHIP

241 / 484 page

 2016-2018 Microchip Technology Inc.

DS70005258C-page 241

dsPIC33EPXXXGS70X/80X FAMILY

SPIxSTATL: SPIx STATUS REGISTER LOW

U-0

HS/R/C-0

HSC/R-0

U-0

HSC/R-0

—

FRMERR

SPIBUSY

—

SPITUR(1)

bit 15

bit 8

HSC/R-0

HS/R/C-0

HSC/R-1

U-0

HSC/R-1

U-0

HSC/R-0

SRMT

SPIROV

SPIRBE

—

SPITBE

—

SPITBF

SPIRBF

bit 7

bit 0

Legend:

C = Clearable bit

U = Unimplemented, read as ‘0’

R = Readable bit

W = Writable bit

HSC = Hardware Settable/Clearable bit

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

HS = Hardware Settable bit

bit 15-13

Unimplemented: Read as ‘0’

bit 12

FRMERR: SPIx Frame Error Status bit

1 = Frame error is detected

0 = No frame error is detected

bit 11

SPIBUSY: SPIx Activity Status bit

1 = Module is currently busy with some transactions

0 = No ongoing transactions (at time of read)

bit 10-9

Unimplemented: Read as ‘0’

bit 8

SPITUR: SPIx Transmit Underrun Status bit(1)

1 = Transmit buffer has encountered a Transmit Underrun condition

0 = Transmit buffer does not have a Transmit Underrun condition

bit 7

SRMT: Shift Register Empty Status bit

1 = No current or pending transactions (i.e., neither SPIxTXB or SPIxTXSR contains data to transmit)

0 = Current or pending transactions

bit 6

SPIROV: SPIx Receive Overflow Status bit

1 = A new byte/half-word/word has been completely received when the SPIxRXB was full

0 = No overflow

bit 5

SPIRBE: SPIx RX Buffer Empty Status bit

1 = RX buffer is empty

0 = RX buffer is not empty

Standard Buffer mode:

Automatically set in hardware when SPIxBUF is read from, reading SPIxRXB. Automatically cleared in

hardware when SPIx transfers data from SPIxRXSR to SPIxRXB.

Enhanced Buffer mode:

Indicates RXELM<5:0> = 000000.

bit 4

Unimplemented: Read as ‘0’

Note 1:

SPITUR is cleared when SPIEN = 0. When IGNTUR = 1, SPITUR provides dynamic status of the

Transmit Underrun condition, but does not stop RX/TX operation and does not need to be cleared by

software.

DSPIC33EP128GS708 Datasheet(PDF) 241 Page - Microchip Technology

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