DSPIC30F5011_06 Datasheet, PDF (90/224 Pages) Microchip Technology – High-Performance, 16-bit Digital Signal Controllers

dsPIC30F5011/5013
FIGURE 14-1:
SDIx
SDOx
SSx
SPI BLOCK DIAGRAM
Read
Internal
Data Bus
Write
SPIxBUF
Receive
SPIxBUF
Transmit
SPIxSR
bit 0
SS & FSYNC
Control
Shift
Clock
Clock
Control
Edge
Select
SCKx
Note: x = 1 or 2.
Secondary
Prescaler
1:1 – 1:8
Primary
Prescaler
FCY
1, 4, 16, 64
Enable Master Clock
FIGURE 14-2:
SPI MASTER/SLAVE CONNECTION
SPI Master
Serial Input Buffer
(SPIxBUF)
SDOx
SDIy
SPI Slave
Serial Input Buffer
(SPIyBUF)
Shift Register
(SPIxSR)
MSb
LSb
PROCESSOR 1
SDIx
Serial Clock
SCKx
SDOy
Shift Register
(SPIySR)
MSb
LSb
SCKy
PROCESSOR 2
Note: x = 1 or 2, y = 1 or 2.
DS70116F-page 88
© 2006 Microchip Technology Inc.