TJA1080ATSSLASH2SLASHT datasheet(14/49 Pages) NXP

14 / 49 page

TJA1080A

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 5 — 24 February 2011

14 of 49

NXP Semiconductors

TJA1080A

FlexRay transceiver

6.2.1 Normal mode

In Normal mode the transceiver is able to transmit and receive data via the bus lines BP

and BM. The output of the normal receiver is directly connected to pin RXD.

The transmitter behavior in Normal mode of operation, with no time-out present on pins

TXEN and BGE and the temperature flag not set, is given in Table 8.

In this mode pins INH1 and INH2 are set HIGH.

6.2.2 Receive-only mode

In Receive-only mode the transceiver can only receive data. The transmitter is disabled,

regardless of the voltages on pins BGE and TXEN.

In this mode pins INH1 and INH2 are set HIGH.

6.2.3 Standby mode

In Standby mode the transceiver has entered a low power mode which means very low

current consumption. In the Standby mode the device is not able to transmit or receive

data and the low power receiver is activated to monitor for bus wake-up patterns.

Standby mode can be entered if the correct polarity is applied to pins EN and STBN (see

Figure 5 and Table 4) or an undervoltage is present on pin VCC; see Figure 5.

In this mode, pin INH1 is set HIGH.

If the wake flag is set, pin INH2 is set to HIGH and pins RXEN and RXD are set to LOW,

otherwise pin INH2 is floating and pins RXEN and RXD are set to HIGH; see Section 6.5.

6.2.4 Go-to-sleep mode

In this mode the transceiver behaves as in Standby mode. If this mode is selected for a

longer time than the go-to-sleep hold time parameter (minimum hold time) and the wake

flag has been previously cleared, the transceiver will enter Sleep mode, regardless of the

voltage on pin EN.

Table 8.

Transmitter function table

BGE

TXEN

TXD

Transmitter

transmitter is disabled

transmitter is enabled; the bus lines are actively driven; BP is driven

HIGH and BM is driven LOW

transmitter is enabled; the bus lines are actively driven; BP is driven

LOW and BM is driven HIGH

TJA1080ATS/2/T Datasheet(PDF) 14 Page - NXP Semiconductors

TJA1080ATS/2/T Datasheet(HTML) 14 Page - NXP Semiconductors

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49

Datasheet Download

Link URL