Texas Instruments Hercules TMS570LS04x/03x LaunchPad Evaluation Kit LAUNCHXL-TMS57004 LAUNCHXL-TMS57004 Datenbogen
Produktcode
LAUNCHXL-TMS57004
SPNS186A – OCTOBER 2012 – REVISED SEPTEMBER 2013
5.5
Controller Area Network (DCAN)
The DCAN supports the CAN 2.0B protocol standard and uses a serial, multimaster communication
protocol that efficiently supports distributed real-time control with robust communication rates of up to 1
megabit per second (Mbps). The DCAN is ideal for applications operating in noisy and harsh
environments (e.g., automotive and industrial fields) that require reliable serial communication or
multiplexed wiring.
protocol that efficiently supports distributed real-time control with robust communication rates of up to 1
megabit per second (Mbps). The DCAN is ideal for applications operating in noisy and harsh
environments (e.g., automotive and industrial fields) that require reliable serial communication or
multiplexed wiring.
5.5.1
Features
Features of the DCAN module include:
•
Supports CAN protocol version 2.0 part A, B
•
Bit rates up to 1 MBit/s
•
The CAN kernel can be clocked by the oscillator for baud-rate generation.
•
32 and 16 mailboxes on DCAN1 and DCAN2, respectively
•
Individual identifier mask for each message object
•
Programmable FIFO mode for message objects
•
Programmable loop-back modes for self-test operation
•
Automatic bus on after Bus-Off state by a programmable 32-bit timer
•
Message RAM protected by parity
•
Direct access to Message RAM during test mode
•
CAN Rx / Tx pins configurable as general purpose IO pins
•
Message RAM Auto Initialization
For more information on the DCAN see the device Technical Reference Manual.
5.5.2
Electrical and Timing Specifications
Table 5-10. Dynamic Characteristics for the DCANx TX and RX pins
Parameter
MIN
MAX
Unit
t
d(CANnTX)
Delay time, transmit shift register to CANnTX pin
(1)
15
ns
t
d(CANnRX)
Delay time, CANnRX pin to receive shift register
5
ns
(1)
These values do not include rise/fall times of the output buffer.
80
Peripheral Information and Electrical Specifications
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