TJA1080ATS/1 NXP [NXP Semiconductors], TJA1080ATS/1 Datasheet - Page 23

• Manufacturer Part Number: TJA1080ATS/1
• Description: FlexRay transceiver
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
TJA1080A_2
Preliminary data sheet
6.7.1 Local wake-up source flag
6.7.2 Remote wake-up source flag
6.7.3 Wake flag
6.7.4 Power-on flag
6.7.5 Node configuration flag
6.7.6 Temperature medium flag
6.7 Flags
The local wake-up source flag can only be set in a low power mode. When a wake-up
event on pin WAKE is detected (see
The local wake-up source flag is reset by entering a low power mode.
The remote wake-up source flag can only be set in a low power mode if pin V
its operating range. When a remote wake-up event is detected on the bus lines (see
Section
reset by entering a low power mode.
The wake flag is set if one of the following events occurs:
In node configuration the wake flag is reset by entering Normal mode, a low power mode
or setting one of the undervoltage flags. In star configuration the wake flag is reset by
entering a low power mode or by recovery of the UV
The PWON flag is set if the internal supply voltage for the digital part becomes higher than
the lowest value it needs to operate. In node configuration, entering Normal mode resets
the PWON flag. In star configuration the PWON flag is reset when the UV
LOW (no undervoltage detected).
Configuration flag set means node configuration.
The temperature medium flag is set if the junction temperature exceeds T
normal power mode while pin V
flag is reset when the junction temperature drops below T
mode with pin V
power mode while pin V
is set.
•
•
•
•
•
Star configuration: If an undervoltage is present on pin V
reset) pins EN, STBN, TXD and BGE are set LOW (internally) and pin TXEN is set
HIGH (internally). If the UV
is present on pin V
the received data on TRXD or bus lines to all other branches.
The local or remote wake-up source flag is set (edge sensitive)
A positive edge is detected on pin STBN if V
Recovery of the UV
By recognizing activity on pins TRXD0 and TRXD1 (only in star configuration)
6.5.3) it sets the remote wake-up source flag. The remote wake-up source flag is
BAT
within its operating range or after a read of the status register in a low
Rev. 02 — 26 August 2008
IO
VBAT
BAT
and V
is within its operating range. No action will be taken if this flag
flag (only in node configuration)
CC
VIO
BAT
is within the operating range, the TJA1080A will forward
flag is set, pin INH1 is switched off. If an undervoltage
is within its operating range. The temperature medium
Section
6.5.4) it sets the local wake-up source flag.
IO
is present
VCC
signal (without t
j(warn)(medium)
IO
(even if the UV
TJA1080A
FlexRay transceiver
in a normal power
© NXP B.V. 2008. All rights reserved.
rec(uv)(VCC)
j(warn)(medium)
VCC
BAT
signal goes
VIO
is within
flag is
).
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