Technical Reference Manual
002-29852 Rev. *B
Bits Name
SW
HW
Default or
Enum
Description
14
S_NOT_READY_ADDR
_NACK
RW
R
1
This field is used during an address match or general
call address in internally clocked mode
Only used when:
- EC_AM_MODE is '0', EC_OP_MODE is '0',
S_GENERAL_IGNORE is '0] and non EZ mode.
Functionality is as follows:
- 1: a received (matching) slave address is
immediately NACK'd when the receiver FIFO is full.
- 0: clock stretching is performed (till the receiver FIFO
is no longer full).
For externally clocked logic (EC_AM is '1') on an
address match or general call address (and
S_GENERAL_IGNORE is '0'). Only used when (NOT
used when EC_AM is '1' and EC_OP is '1' and
address match and EZ mode):
- EC_AM is '1' and EC_OP is '0'.
- EC_AM is '1' and general call address match.
- EC_AM is '1' and non EZ mode.
Functionality is as follows:
- 1: a received (matching or general) slave address is
always immediately NACK'd. There are two
possibilities:
1). the SCB clock is available (in Active system power
mode) and it handles the rest of the current transfer. In
this case the I2C master will not observe the NACK.
2).SCB clock is not present (in DeepSleep system
power mode). In this case the I2C master will observe
the NACK and may retry the transfer in the future
(which gives the internally clocked logic the time to
wake up from DeepSleep system power mode).
- 0: clock stretching is performed (till the SCB clock is
available). The logic will handle the ongoing transfer as
soon as the clock is enabled.
15
S_NOT_READY_DATA
_NACK
RW
R
1
Only used when:
- non EZ mode
Functionality is as follows:
- 1: a received data element byte the slave is
immediately NACK'd when the receiver FIFO is full.
- 0: clock stretching is performed (till the receiver FIFO
is no longer full).
16
LOOPBACK
RW
R
0
Local loopback control (does NOT affect the
information on the pins). Only applicable in
master/slave mode.
When '0', no loopback
When '1', loopback is enabled internally in the
peripheral, and as a result unaffected by other I2C
devices. This allows a SCB I2C peripheral to address
itself.
30
SLAVE_MODE
RW
R
0
Slave mode enabled ('1') or not ('0').
31
MASTER_MODE
RW
R
0
Master mode enabled ('1') or not ('0'). Note that both
master and slave modes can be enabled at the same
time. This allows the IP to address itself.
1408
2022-04-18
TRAVEO™ T2G Automotive MCU: TVII-B-E-4M body controller entry registers