Peripherals
Address
Controls
Data
32
eCAN0INT
eCAN1INT
Enhanced CAN Controller
Message Controller
Mailbox RAM
(512 Bytes)
Memory Management
Unit
eCAN Memory
(512 Bytes)
Registers and Message
Objects Control
CPU Interface,
Receive Control Unit,
Timer Management Unit
32-Message Mailbox
of 4 × 32-Bit Words
32
32
32
eCAN Protocol Kernel
Receive Buffer
Transmit Buffer
Control Buffer
Status Buffer
SN65HVD23x
3.3-V CAN Transceiver
CAN Bus
Figure 4−7. eCAN Block Diagram and Interface Circuit
Table 4−5. 3.3-V eCAN Transceivers for the TMS320F281x and TMS320C281x DSPs
SUPPLY
VOLTAGE
SLOPE
CONTROL
PART NUMBER
LOW-POWER MODE
VREF
OTHER
T
A
SN65HVD230
SN65HVD230Q
SN65HVD231
SN65HVD231Q
SN65HVD232
SN65HVD232Q
3.3 V
3.3 V
3.3 V
3.3 V
3.3 V
3.3 V
Standby
Standby
Sleep
Adjustable
Adjustable
Adjustable
Adjustable
None
Yes
Yes
−−
−−
−−
−−
−−
−−
−40°C to 85°C
−40°C to 125°C
−40°C to 85°C
−40°C to 125°C
−40°C to 85°C
−40°C to 125°C
Yes
Sleep
Yes
None
None
None
None
None
Diagnostic
Loopback
SN65HVD233
SN65HVD234
SN65HVD235
3.3 V
3.3 V
3.3 V
Standby
Standby & Sleep
Standby
Adjustable
Adjustable
Adjustable
None
None
None
−40°C to 125°C
−40°C to 125°C
−40°C to 125°C
−−
Autobaud
Loopback
70
SPRS174L
April 2001 − Revised December 2004
TI [ TEXAS INSTRUMENTS ]
