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PIC16(L)F1508/9
DS40001609E-page 178
2011-2015 Microchip Technology Inc.
FIGURE 21-7:
SPI DAISY-CHAIN CONNECTION
FIGURE 21-8:
SLAVE SELECT SYNCHRONOUS WAVEFORM
SCK
SCK
SCK
SCK
SDOx
SDOx
SDOx
SDOx
SDIx
SDIx
SDIx
SDIx
General I/O
SPI Master
SPI Slave
#1
SPI Slave
#2
SPI Slave
#3
SSx
SSx
SSx
Rev. 10-000082A
7/30/2013
SCKx
(CKP =
1
SCKx
(CKP =
0
Input
Sample
SDIx
bit 7
SDOx
bit 7
bit 6
bit 7
SSPxIF
Interrupt
CKE =
0
)
CKE =
0
)
Write to
SSPxBUF
SSPxSR to
SSPxBUF
SSx
Flag
bit 0
bit 7
bit 0
bit 6
SSPxBUF to
SSPxSR
Shift register SSPxSR
and bit count are reset