ATA6834 ATMEL Corporation, ATA6834 Datasheet - Page 13

• Manufacturer Part Number: ATA6834
• Description: (ATA6833 / ATA6834) BLDC Motor Driver and LIN System Basis Chip
• Manufacturer: ATMEL Corporation

Figure 3-7.
9122D–AUTO–09/09
of transmitting node)
(Input to transmitting node)
(Transceiver supply
(Output of receiving node1)
(Output of receiving node2)
VS
Definition of Bus Timing Parameters
TXD
RXD
RXD
TH
TH
TH
TH
The recessive BUS level is generated from the integrated 30 k pull-up resistor in series with an
active diode. This diode protects against reverse currents on the bus line in case of a voltage dif-
ference between the bus line and VSUP (V
necessary to use the IC as a LIN slave. If this IC is used as a LIN master, the LIN pin is termi-
nated by an external 1 k resistor in series with a diode to VBAT.
As PWM communication directly over the LIN transceiver in both directions is possible, there is
no TXD timeout feature implemented in the LIN transceiver.
Dom(max)
Rec(max)
Dom(min)
Rec(min)
t
rx_pdf(1)
t
Bit
LIN Bus Signal
t
t
Bus_dom(min)
Bus_dom(max)
t
rx_pdr(2)
ATA6833/ATA6834 [Preliminary]
t
Bit
BUS
> V
t
SUP
Bus_rec(min)
t
t
rx_pdr(1)
Bus_rec(max)
). No additional termination resistor is
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t
Bit
receiving node1
receiving node2
Thresholds of
Thresholds of
t
rx_pdf(2)
13