Technical Reference Manual
002-29852 Rev. *B
Bits Name
SW
HW
Default or
Enum
Description
2
CPHA
RW
R
0
Indicates the clock phase. This field, together with the
CPOL field, indicates when MOSI data is driven and
MISO data is captured:
- Motorola mode 0. CPOL is '0', CPHA is '0': MOSI is
driven on a falling edge of SCLK. MISO is captured on
a rising edge of SCLK.
- Motorola mode 1. CPOL is '0', CPHA is '1': MOSI is
driven on a rising edge of SCLK. MISO is captured on
a falling edge of SCLK.
- Motorola mode 2. CPOL is '1', CPHA is '0': MOSI is
driven on a rising edge of SCLK. MISO is captured on
a falling edge of SCLK.
- Motorola mode 3. CPOL is '1', CPHA is '1': MOSI is
driven on a falling edge of SCLK. MISO is captured on
a rising edge of SCLK.
In SPI Motorola submode, all four CPOL/CPHA modes
are valid.
in SPI NS submode, only CPOL=0 CPHA=0 mode is
valid.
in SPI TI submode, only CPOL=0 CPHA=1 mode is
valid.
3
CPOL
RW
R
0
Indicates the clock polarity. This field, together with the
CPHA field, indicates when MOSI data is driven and
MISO data is captured:
- CPOL is '0': SCLK is '0' when not transmitting data.
- CPOL is '1': SCLK is '1' when not transmitting data.
4
LATE_MISO_SAMPLE
RW
R
1
Changes the SCLK edge on which MISO is captured.
Only used in master mode.
When '0', the default applies (
for Motorola as determined by CPOL and CPHA,
for Texas Instruments on the falling edge of SCLK and
for National Semiconductors on the rising edge of
SCLK).
When '1', the alternate clock edge is used (which
comes half a SPI SCLK period later). Late sampling
addresses the round trip delay associated with
transmitting SCLK from the master to the slave and
transmitting MISO from the slave to the master.
5
SCLK_CONTINUOUS
RW
R
0
Only applicable in master mode.
'0': SCLK is generated, when the SPI master is
enabled and data is transmitted.
'1': SCLK is generated, when the SPI master is
enabled. This mode is useful for slave devices that use
SCLK for functional operation other than just SPI
functionality.
8
SSEL_POLARITY0
RW
R
0
Slave select polarity. SSEL_POLARITY0 applies to the
outgoing SPI slave select signal 0 (master mode) and
to the incoming SPI slave select signal (slave mode).
For Motorola and National Semiconductors submodes:
'0': slave select is low/'0' active.
'1': slave select is high/'1' active.
For Texas Instruments submode:
'0': high/'1' active precede/coincide pulse.
'1': low/'0' active precede/coincide pulse.
9
SSEL_POLARITY1
RW
R
0
Slave select polarity.
10
SSEL_POLARITY2
RW
R
0
Slave select polarity.
11
SSEL_POLARITY3
RW
R
0
Slave select polarity.
1392
2022-04-18
TRAVEO™ T2G Automotive MCU: TVII-B-E-4M body controller entry registers