uja1023 NXP Semiconductors, uja1023 Datasheet - Page 4

• Manufacturer Part Number: uja1023
• Description: Uja1023 Lin-i/o Slave
• Manufacturer: NXP Semiconductors

Philips Semiconductors
7. Functional description
UJA1023_4
Product data sheet
7.1.1 LIN controller
7.1.2 LIN transceiver (including termination)
6.2 Pin description
7.1 Short description of the UJA1023
Table 3.
[1]
The UJA1023 combines all blocks necessary to work as a stand-alone LIN slave. Various
I/O functions typically used in a car are supported. For a more detailed description refer to
Section 7.2
The LIN 2.0 controller monitors and evaluates the LIN messages in order to process the
LIN commands. It supervises and executes the NAD assignment, ID assignment and
I/O-configuration and controls the operating modes of the UJA1023.
The NAD configuration is done by a combination of a LIN master request frame and a
setting done by either a daisy chain or plug ID code.
The LIN transceiver, which is LIN 2.0 / SAE J2602 compliant, is the interface between the
internal LIN controller and the physical LIN bus. The transmit data stream of the LIN
controller is converted into a bus signal with an optimized wave shape to minimize
Symbol
VIO
INH
BAT
LIN
GND
C1
C2
C3
P0
P1
P2
P3
P4
P5
P6
P7
I = input;
O = output;
I/O = input or output.
Pin description
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
to
Section
Type
I
O
I
I/O
I
I
I
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
7.6. The block diagram is shown in
Rev. 04 — 5 July 2006
[1]
Description
reference input for level adaptation of the I/O pins P0 to P7
inhibit output for controlling an external voltage regulator or
internal ADC
battery supply
LIN bus line
ground
configuration input 1 for LIN slave NAD assignment
configuration input 2 for LIN slave NAD assignment
configuration input / output 3 for LIN slave NAD assignment
bidirectional I/O pin 0
bidirectional I/O pin 1
bidirectional I/O pin 2
bidirectional I/O pin 3
bidirectional I/O pin 4
bidirectional I/O pin 5
bidirectional I/O pin 6
bidirectional I/O pin 7
Figure
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
1.
UJA1023
LIN-I/O slave
4 of 48