tja1082 NXP Semiconductors, tja1082 Datasheet - Page 5

• Manufacturer Part Number: tja1082
• Description: Flexray Node Transceiver
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 3.
[1]
[2]
[3]
[4]
[5]
[6]
[7]
TJA1082_2
Product data sheet
Mode
Normal
Standby
Power-off
The wake flag is set if a valid wake-up event is detected while switching to Standby mode.
The wake flag is set if a valid wake-up event is detected.
V
Pins ERRN and RXD reflect the state of the wake flag prior to the V
The internal signals at pins STBN, BGE and TXD are set LOW; the internal signals at pins TXEN, SCLK and SCSN are set HIGH.
V
Except when V
uvd(VCC)
CC
< V
[6]
th(rec)POR
Pin signalling in the different power modes
> V
STBN UV at
HIGH no
LOW
LOW
HIGH no
X
X
X
CC
6.1.1 Normal mode
CC
> V
at power-up and V
= 0; in this case BP and BM are floating.
V
no
no
yes
yes
X
th(det)POR
IO
[5]
[5]
[5]
In Normal mode, the transceiver transmits and receives data via the bus lines BP and BM.
The transmitter and the normal receiver are enabled, along with the undervoltage
detection function. The timing diagram for Normal mode is illustrated in
UV
at
V
no
no
yes
yes
no
yes
yes
.
CC
[3]
[3]
[3]
wake
LOW
high-
ERRN
LOW HIGH
error
flag
set
flag
set
wake
flag
set
error
flag
set
LOW
impedance
CC
[4]
< V
th(det)POR
error
flag
reset
wake
flag
reset
wake
flag
reset
error
flag
reset
[4]
Rev. 02.03 — 10 August 2009
at power-down (see
RXD
LOW
bus
DATA_
0
wake
flag
set
wake
flag
set
wake
flag
set
LOW
LOW
HIGH
[4]
[4]
HIGH
bus
DATA_1
or idle
wake
flag
reset
wake
flag
reset
wake
flag
reset
CC
[4]
[4]
undervoltage event.
Figure 6
SDO
high-
impedance
(in simple
error
indication
mode) or
enabled (in
SPI mode)
high-
impedance
and
Figure
Biasing
BP, BM
V
GND
GND
CC
7).
/ 2
[7]
UV-det
enabled enabled enabled
disabled
FlexRay node transceiver
Trans-
mitter
disabled enabled
© NXP B.V. 2009. All rights reserved.
TJA1082
Figure
3.
Low-
power
receiver
disabled
enabled
disabled
disabled
5 of 35
[1]
[2]
[2]