Datasheet

dsPIC30F1010/202X
DS70178C-page 148 Preliminary © 2006 Microchip Technology Inc.
FIGURE 13-5: SPI SLAVE, FRAME MASTER CONNECTION DIAGRAM
FIGURE 13-6: SPI SLAVE, FRAME SLAVE CONNECTION DIAGRAM
EQUATION 13-1: RELATIONSHIP BETWEEN DEVICE AND SPI CLOCK SPEED
TABLE 13-1: SAMPLE SCKx FREQUENCIES
FCY = 40 MHz
Secondary Prescaler Settings
1:1 2:1 4:1 6:1 8:1
Primary Prescaler Settings 1:1 Invalid Invalid 7500 5000 3750
4:1 7500 3750 1875 1250 937.5
16:1 1875 937.5 469 312.5 234.4
64:1 469 234.4 117 78.1 58.6
F
CY = 5 MHz
Primary Prescaler Settings 1:1 5000 2500 1250 833 625
4:1 1250 625 313 208 156
16:1 313 156 78 52 39
64:17839201310
Note: SCKx frequencies shown in kHz.
SDOx
SDIx
dsPIC33F
Serial Clock
SSx
SCKx
Frame Sync
Pulse
SDIx
SDOx
PROCESSOR 2
SSx
SCKx
(SPI Slave, Frame Slave)
SDOx
SDIx
dsPIC33F
Serial Clock
SSx
SCKx
Frame Sync
Pulse
SDIx
SDOx
PROCESSOR 2
SSx
SCKx
(SPI Master, Frame Slave)
Primary Prescaler * Secondary Prescaler
F
CY
FSCK =