Can Controllers And Acceptance Filter - Philips LPC2119 User Manual

Philips Semiconductors
ARM-based Microcontroller

14. CAN CONTROLLERS AND ACCEPTANCE FILTER

The Controller Area Network (CAN) is a serial communications protocol which efficiently supports distributed real-time control
with a very high level of security. Its domain of application ranges from high speed networks to low cost multiplex wiring.
The LPC2119/2129/2292/2294 CAN block is intended to support multiple CAN buses simultaneously, allowing the device to be
used as a gateway, switch, or router among a number of CAN buses in industrial or automotive applications.
FEATURES
• 6 CAN controllers and buses (5 in the 48- and 64-pin packages)
• Data rates to 1 Mbits/second on each bus
• 32-bit register and RAM access
• Compatible with CAN specification 2.0B, ISO 11898-1
• Global Acceptance Filter recognizes 11- and 29-bit Rx Identifiers for all CAN buses
• Acceptance Filter can provide FullCAN-style automatic reception for selected Standard Identifiers
PIN DESCRIPTION
Table 121: CAN Pin Descriptions
Pin Name Type
RX6-1 Inputs
TX6-1 Outputs
MEMORY MAP OF THE CAN BLOCK
The CAN Controllers and Acceptance Filter occupy a number of VPB slots, as follows:
CAN Controllers and Acceptance Filter
Serial Inputs. From CAN transceivers.
Serial Outputs. To CAN transceivers.
Table 122: Memory Map of the CAN Block
Address Range Used For
E003 8000 - 87FF Acceptance Filter RAM
E003 C000 - C017 Acceptance Filter Registers
E004 0000 - 000B Central CAN Registers
E004 4000 - 405F CAN Controller 1 Registers
E004 8000 - 805F CAN Controller 2 Registers
E004 C000 - C05F CAN Controller 3 Registers
E005 0000 - 005F CAN Controller 4 Registers
E005 4000 - 405F CAN Controller 5 Registers
E005 8000 - 805F CAN Controller 6 Registers
LPC2119/2129/2292/2294
Description
158
Preliminary User Manual
January 08, 2004