
Chapter 12 Serial Peripheral Interface (S12SPIV4)
MC9S12XDP512 Data Sheet, Rev. 2.17
Freescale Semiconductor
523
Table 12-6. Example SPI Baud Rate Selection (25 MHz Bus Clock)
SPPR2
SPPR1
SPPR0
SPR2
SPR1
SPR0
Baud Rate
Divisor
Baud Rate
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
2
4
8
16
32
64
128
256
4
8
16
32
64
128
256
512
6
12
24
48
96
192
384
768
8
16
32
64
128
256
512
1024
10
20
40
80
160
320
640
12.5 MHz
6.25 MHz
3.125 MHz
1.5625 MHz
781.25 kHz
390.63 kHz
195.31 kHz
97.66 kHz
6.25 MHz
3.125 MHz
1.5625 MHz
781.25 kHz
390.63 kHz
195.31 kHz
97.66 kHz
48.83 kHz
4.16667 MHz
2.08333 MHz
1.04167 MHz
520.83 kHz
260.42 kHz
130.21 kHz
65.10 kHz
32.55 kHz
3.125 MHz
1.5625 MHz
781.25 kHz
390.63 kHz
195.31 kHz
97.66 kHz
48.83 kHz
24.41 kHz
2.5 MHz
1.25 MHz
625 kHz
312.5 kHz
156.25 kHz
78.13 kHz
39.06 kHz