PIC24FJ16GA MICROCHIP [Microchip Technology], PIC24FJ16GA Datasheet - Page 138

• Manufacturer Part Number: PIC24FJ16GA
• Description: 28/44-Pin General Purpose, 16-Bit Flash Microcontrollers
• Manufacturer: MICROCHIP [Microchip Technology]

PIC24FJ64GA004 FAMILY
REGISTER 14-1:
DS39881C-page 136
bit 15
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 15
bit 14
bit 13
bit 12-11
bit 10-8
bit 7
bit 6
bit 5
bit 4-2
Note 1:
SPIEN
SRMPT
R/W-0
R-0
(1)
If SPIEN = 1, these functions must be assigned to available RPn pins before use. See Section 9.4
“Peripheral Pin Select” for more information.
SPIEN: SPIx Enable bit
1 = Enables module and configures SCKx, SDOx, SDIx and SSx as serial port pins
0 = Disables module
Unimplemented: Read as ‘0’
SPISIDL: Stop in Idle Mode bit
1 = Discontinues module operation when device enters Idle mode
0 = Continues module operation in Idle mode
Unimplemented: Read as ‘0’
SPIBEC2:SPIBEC0: SPIx Buffer Element Count bits (valid in Enhanced Buffer mode)
Master mode:
Number of SPI transfers pending.
Slave mode:
Number of SPI transfers unread.
SRMPT: Shift Register (SPIxSR) Empty bit (valid in Enhanced Buffer mode)
1 = SPIx Shift register is empty and ready to send or receive
0 = SPIx Shift register is not empty
SPIROV: Receive Overflow Flag bit
1 = A new byte/word is completely received and discarded. The user software has not read the previous
0 = No overflow has occurred
SRXMPT: Receive FIFO Empty bit (valid in Enhanced Buffer mode)
1 = Receive FIFO is empty
0 = Receive FIFO is not empty
SISEL2:SISEL0: SPIx Buffer Interrupt Mode bits (valid in Enhanced Buffer mode)
111 = Interrupt when SPIx transmit buffer is full (SPITBF bit is set)
110 = Interrupt when last bit is shifted into SPIxSR; as a result, the TX FIFO is empty
101 = Interrupt when the last bit is shifted out of SPIxSR; now the transmit is complete
100 = Interrupt when one data is shifted into the SPIxSR; as a result, the TX FIFO has one open spot
011 = Interrupt when SPIx receive buffer is full (SPIRBF bit set)
010 = Interrupt when SPIx receive buffer is 3/4 or more full
001 = Interrupt when data is available in receive buffer (SRMPT bit is set)
000 = Interrupt when the last data in the receive buffer is read; as a result, the buffer is empty
SPIROV
R/C-0
data in the SPIxBUF register.
U-0
—
(SRXMPT bit is set)
SPIxSTAT: SPIx STATUS AND CONTROL REGISTER
C = Clearable bit
W = Writable bit
‘1’ = Bit is set
SRXMPT
SPISIDL
R/W-0
R/W-0
(1)
SISEL2
R/W-0
U-0
—
Preliminary
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
SISEL1
R/W-0
U-0
—
SPIBEC2
SISEL0
R/W-0
R-0
© 2008 Microchip Technology Inc.
x = Bit is unknown
SPIBEC1
SPITBF
R-0
R-0
SPIBEC0
SPIRBF
R-0
R-0
bit 8
bit 0