LPC2925 NXP Semiconductors, LPC2925 Datasheet - Page 30

• Manufacturer Part Number: LPC2925
• Description: (LPC2921 - LPC2925) ARM9 microcontroller
• Manufacturer: NXP Semiconductors

NXP Semiconductors
LPC2921_2923_2925_0
Preliminary data sheet
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6.13.2.1 Pin description
6.13.2 LIN
6.13.3 I
The LPC2921/2923/2925 contain two LIN 2.0 master controllers. These can be used as
dedicated LIN 2.0 master controllers with additional support for sync break generation and
with hardware implementation of the LIN protocol according to spec 2.0.
The key features are:
The two LIN 2.0 master controllers in the LPC2921/2923/2925 have the pins listed below.
The LIN pins are combined with other functions on the port pins of the
LPC2921/2923/2925.
subsection 3.43, LIN master controller.
Table 18.
Remark: Both LIN channels can be also configured as UART channels.
The LPC2921/2923/2925 each contain two I
The I
(SCL) and a serial data line (SDA). Each device is recognized by a unique address and
can operate as either a receiver-only device (e.g., an LCD driver) or as a transmitter with
the capability to both receive and send information (such as memory). Transmitters and/or
receivers can operate in either master or slave mode, depending on whether the chip has
to initiate a data transfer or is only addressed. The I
controlled by more than one bus master connected to it.
The main features if the I
Symbol
LIN0/1 TXD
LIN0/1 RXD
2
•
•
•
•
•
•
•
•
•
•
•
•
C-bus serial I/O controllers
Complete LIN 2.0 message handling and transfer
One interrupt per LIN message
Slave response time-out detection
Programmable sync-break length
Automatic sync-field and sync-break generation
Programmable inter-byte space
Hardware or software parity generation
Automatic checksum generation
Fault confinement
Fractional baud rate generator
I
and do not support powering off of individual devices connected to the same bus
lines.
Easy to configure as master, slave, or master/slave.
2
2
C0 and I
C-bus is bidirectional for inter-IC control using only two wires: a serial clock line
LIN controller pins
Pin name
TXDL0/1
RXDL0/1
2
C1 use standard I/O pins with bit rates of up to 400 kbit/s (Fast I
Rev. 00.01 — 24 October 2008
Table 18
2
C-bus interfaces are:
Direction
OUT
IN
shows the LIN pins. For more information see
Description
LIN channel 0/1 transmit data output
LIN channel 0/1 receive data input
2
C-bus controllers.
ARM9 microcontroller with CAN and LIN
LPC2921/2923/2925
2
C is a multi-master bus, and it can be
© NXP B.V. 2008. All rights reserved.
Ref. 1
2
C-bus)
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