TMC2084-HD SMSC, TMC2084-HD Datasheet - Page 20

• Manufacturer Part Number: TMC2084-HD
• Description: Network Controller & Processor ICs DUAL MODE CircLink Cntlr
• Manufacturer: SMSC

Specifications of TMC2084-HD

• Product: Controller Area Network (CAN)
• Number Of Transceivers: 1
• Data Rate: 5 Mbps
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 3 V
• Supply Current (max): 25 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Package / Case: TQFP-48
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Revision 0.2 (10-23-08)
Example 3: Configuring Port D as an INPUT PORT
The figure below shows the case where the port D is configured as INPUT PORT. The port D remains in
high impedance state while the reset signal (reset) remains low level. During this high-impedance state,
data defined by an external pull-up (High) or pull-down (Low) resister must be inputted to port D and any
external input data to port D should be inhibited to avoid conflict. This requires the external tri-state buffer
to inhibit input data during the reset period.
A hold time greater than 5 ns is required to retrieve the data configured by the shared pins and place it on
the onchip memory. Thus, the buffer is added to provide a delay time for the control signal of the external
tri-state buffer.
generator
Register
Reset
Only port D remains in Hi-Z while
nRESET = L
.
Inside of LSI
DATASHEET
nRESET
PD7-0
Page 20
Configuration
by shared pins
H
L
Delay >5ns
Reset signal
Standalone Mode CircLink
SMSC TMC2084
TM
Input data
Datasheet
Controller