TLE9221SX Datasheet, PDF (57/91 Pages) Infineon Technologies AG – FlexRay Transceiver

TLE9221SX
Operating Mode Description
Table 16 Mode changes by setting the wake-up flag ^{1) 2) 3) 4)}
No. Primary
STBN EN
Operating Mode
Wake- uV_BAT
up Flag Flag
uV_IO
Flag
uV_CC
Flag
Secondary Operating ERRN⁵⁾ RxD⁶⁾ RxEN⁶⁾ INH
Mode
Remarks
BD_Sleep
62 BD_Sleep
L
L
set “L” 2 => H 2 => H 2 => H 1 => BD_Standby
1 => L 1 => L 1 => L 1 => Not_Sleep ⁷⁾
63 BD_Sleep
L
H
set “L” 2 => H 2 => H 2 => H 1 => BD_Standby
1 => L 1 => L 1 => L 1 => Not_Sleep ⁷⁾
BD_Standby
64 BD_Standby
L
L
set “L” H
H
2 => H BD_Standby
1 => L 1 => L 1 => L Not_Sleep
7)_, 8)
BD_GoToSleep
65 BD_GoToSleep L
H
set “L” 2 => H 2 => H 2 => H 1 => BD_Standby
1 => L 1 => L 1 => L 1 => Not_Sleep
7)_, 8)
1) The table describes the states and signals of flags, operating modes and output pins. This table does not contain any timing information. Time for mode changes or the response time of
the digital outputs are specified in the electrical characteristics (compare with Table 21).
2) All flags are “low” active. “L” means the flag is set.
“X” = “don’t care”.
The color red stands for the event which triggered the mode transition.
For example: set “L” or set “H”.
The color blue stands for the consequence of the trigger event.
The numbers, “1 =>”, “2 =>” indicate the order of the consequences.
For example: “1=> BD_Normal” means the transceiver TLE9221SX changes over to BD_Normal mode.
“2=> H” means the flag is cleared after the TLE9221SX has changed over to BD_Normal mode.
“FB” stands for “Follow Bus” and means that depending on the signal on the FlexRay bus, the pins RxD and RxEN can either be “high” or “low”.
3) The wake-up flag stands for a detected wake-up event (compare with Chapter 7.3 and Table 10).
The uV_BAT flag is the same as the uV_BAT undervoltage flag, which is set after the uV_BAT undervoltage detection timer expires (compare with Chapter 8.3.1).
The uV_IO flag is the same as the uV_IO undervoltage flag, which is set after the uV_IO undervoltage detection timer expires (compare with Chapter 8.3.1).
The uV_CC flag is the same as the uV_CC undervoltage flag, which is set after the uV_CC undervoltage detection timer expires (compare with Chapter 8.3.1).
4) The ERRN output indicates the wake-up flag, the wake-up source bit and the error bit (compare with Table 9). The error bit is set only by the undervoltage bits, such as the uV_BAT
undervoltage bit (bit 8), the uV_CC undervoltage bit (bit 9) and the uV_IO undervoltage bit (bit 10). All other possible sources setting the error bit, such as, for example, a bus failure or an
overtemperature event, are considered as not set in this table.
5) The signal at the ERRN output pin depends on the host command applied and not on the current operating mode (compare with Chapter 6.3).
6) The signals at the RxD and RxEN outputs depend on the current operation mode, and are independent of the host command applied (compare with Table 5).
7) Setting the wake-up flag also resets all undervoltage flags.
8) In BD_Standby mode, only the uV_CC undervoltage flag can be active (see Table 14).
Data Sheet
57
Rev. 1.10, 2013-07-15