tja1080a NXP Semiconductors, tja1080a Datasheet - Page 17

• Manufacturer Part Number: tja1080a
• Description: Flexray Transceiver
• Manufacturer: NXP Semiconductors

NXP Semiconductors
TJA1080A_3
Preliminary data sheet
Fig 7.
TRXDOUT is a virtual signal that indicates the state of the TRXD lines. TRXDOUT HIGH means TRXD lines switched as
output. TRXDOUT LOW means TRXD lines switched as input.
Timing diagram in star configuration
TRXDOUT
TRXD0
TRXD1
RXEN
TXEN
RXD
TXD
6.3.1 Star-idle mode
BM
BP
This mode is entered if one of the following events occurs:
In Star-idle mode the transceiver monitors pins TXEN, TRXD0 and TRXD1 and the bus
lines for activity. In this mode the transmitter is disabled.
•
•
•
•
star transmit
From Star-receive mode and Star-transmit mode if idle is detected on the bus lines, on
pin TXEN and on pins TRXD0 and TRXD1.
If the transceiver is in Star-locked mode and idle is detected on the bus lines and pin
TXEN for longer than t
If the transceiver is in Star-standby mode and the wake flag is set or no undervoltage
is present.
If the transceiver is in Star-sleep mode and the wake flag is set, the transceiver enters
Star-idle mode in order to obtain a stable starting point (no glitches on the bus lines
etc.).
star idle
Rev. 03 — 15 January 2009
to(locked-idle)
star receive
.
star idle
star transmit
TJA1080A
FlexRay transceiver
© NXP B.V. 2009. All rights reserved.
001aae440
star idle
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