SC9S12XS256J1MAA FREESCALE [Freescale Semiconductor, Inc], SC9S12XS256J1MAA Datasheet - Page 442
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SC9S12XS256J1MAA
Manufacturer Part Number
SC9S12XS256J1MAA
Description
HCS12 Microcontrollers
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
1.SC9S12XS256J1MAA.pdf
(736 pages)
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Serial Peripheral Interface (S12SPIV5)
15.3.2.4
Read: Anytime
Write: Has no effect
442
Module Base +0x0003
SPPR2
Reset
SPTEF
MODF
Field
SPIF
1
1
1
1
1
1
1
1
1
1
7
5
4
W
R
SPIF
SPIF Interrupt Flag — This bit is set after received data has been transferred into the SPI data register. For
information about clearing SPIF Flag, please refer to
0 Transfer not yet complete.
1 New data copied to SPIDR.
SPI Transmit Empty Interrupt Flag — If set, this bit indicates that the transmit data register is empty. For
information about clearing this bit and placing data into the transmit data register, please refer to
0 SPI data register not empty.
1 SPI data register empty.
Mode Fault Flag — This bit is set if the SS input becomes low while the SPI is configured as a master and mode
fault detection is enabled, MODFEN bit of SPICR2 register is set. Refer to MODFEN bit description in
Section 15.3.2.2, “SPI Control Register 2
register (with MODF set) followed by a write to the SPI control register 1.
0 Mode fault has not occurred.
1 Mode fault has occurred.
Table 15-7. Example SPI Baud Rate Selection (25 MHz Bus Clock) (Sheet 3 of 3)
SPI Status Register (SPISR)
0
7
SPPR1
1
1
1
1
1
1
1
1
1
1
= Unimplemented or Reserved
0
0
6
SPPR0
0
0
1
1
1
1
1
1
1
1
Figure 15-6. SPI Status Register (SPISR)
S12XS Family Reference Manual, Rev. 1.09
Table 15-8. SPISR Field Descriptions
SPTEF
1
5
SPR2
1
1
0
0
0
0
1
1
1
1
(SPICR2)”. The flag is cleared automatically by a read of the SPI status
MODF
SPR1
0
4
1
1
0
0
1
1
0
0
1
1
Description
Table
SPR0
15-9.
0
1
0
1
0
1
0
1
0
1
0
0
3
Baud Rate
Divisor
1792
1024
2048
0
0
2
896
128
256
512
16
32
64
Freescale Semiconductor
0
0
1
1.5625 Mbit/s
781.25 kbit/s
390.63 kbit/s
195.31 kbit/s
27.90 kbit/s
13.95 kbit/s
97.66 kbit/s
48.83 kbit/s
24.41 kbit/s
12.21 kbit/s
Baud Rate
Table
15-10.
0
0
0
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