Technical Reference Manual
002-29852 Rev. *B
Bits Name
SW
HW
Default or
Enum
Description
12
SSEL_SETUP_DEL
RW
R
0
Indicates the SPI SELECT setup delay (between
SELECT activation and SCLK clock edge to sample
the first MOSI bit).
'0': 0.75 SPI clock cycles
'1': 1.75 SPI clock cycles
Only applies in SPI MOTOROLA submode and when
SCLK_CONTINUOUS=0, CTRL.OVS>=3.
above are ideal case at SCB block level, and there is
inaccuracy of one clk_scb cycle.
13
SSEL_HOLD_DEL
RW
R
0
Indicates the SPI SELECT hold delay (between SPI
clock edge to sample the last MOSI bit, and SELECT
deactivation).
'0': 0.75 SPI clock cycles
'1': 1.75 SPI clock cycles
Only applies in SPI MOTOROLA submode and when
SCLK_CONTINUOUS=0, CTRL.OVS>=3.
above are ideal case at SCB block level, and there is
inaccuracy of one clk_scb cycle.
14
SSEL_INTER_FRAME
_DEL
RW
R
0
Indicates the SPI SELECT inter-dataframe delay
(between SELECT deactivation and SELECT
activation).
'0': 1.5 SPI clock cycles
'1': 2.5 SPI clock cycles
Only applies in SPI MOTOROLA submode and when
SPI_CTRL.SSEL_CONTINUOUS=0, CTRL.OVS>=3.
above are ideal case at SCB block level, and there is
inaccuracy of one clk_scb cycle.
16
LOOPBACK
RW
R
0
Local loopback control (does NOT affect the
information on the pins). Only used in master mode.
Not used in National Semiconductors submode.
'0': No local loopback
'1': the SPI master MISO line is connected to the SPI
master MOSI line. In other words, in loopback mode
the SPI master receives on MISO what it transmits on
MOSI.
24:25 MODE
RW
R
3
Submode of SPI operation (3: Reserved).
SPI_MOTOROLA
0
SPI Motorola submode. In master mode, when not
transmitting data (Slave SELECT is inactive), SCLK is
stable at CPOL. In slave mode, when not selected,
SCLK is ignored; i.e. it can be either stable or clocking.
In master mode, when there is no data to transmit (TX
FIFO is empty), Slave SELECT is inactive.
SPI_TI
1
SPI Texas Instruments submode. In master mode,
when not transmitting data, SCLK is stable at '0'. In
slave mode, when not selected, SCLK is ignored; i.e. it
can be either stable or clocking. In master mode, when
there is no data to transmit (TX FIFO is empty), Slave
SELECT is inactive; i.e. no pulse is generated.
SPI_NS
2
SPI National Semiconductors submode. In master
mode, when not transmitting data, SCLK is stable at
'0'. In slave mode, when not selected, SCLK is
ignored; i.e. it can be either stable or clocking. In
master mode, when there is no data to transmit (TX
FIFO is empty), Slave SELECT is inactive.
1393
2022-04-18
TRAVEO™ T2G Automotive MCU: TVII-B-E-4M body controller entry registers