TMC2084-HT SMSC, TMC2084-HT Datasheet - Page 20

• Manufacturer Part Number: TMC2084-HT
• Description: IC CTRLR CIRCLINK TM 48-TQFP
• Manufacturer: SMSC
• Series: CircLink™r

Specifications of TMC2084-HT

• Controller Type: I/O Controller
• Interface: Transceiver
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-TQFP, 48-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Other names: 638-1025

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