TMC2084-HT SMSC, TMC2084-HT Datasheet - Page 33

• 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

Standalone Mode CircLink
Datasheet
NOTE:
*NOTE:
SMSC TMC2084
START TRANSMIT command (CMD7 - 0 = 0000 - 0011 = 03h)
Operation: Enables the transmit trigger and starts the transmission of the INPUT DATA packet. After
receiving this command, packets the TMC2084 can transmit are limited to INPUT DATA packets. The
SOFTWARE RESET command disables transmission from the TMC2084.
Response: The INPUT DATA packet is broadcasted only one time upon receiving own token regardless of
the transmit trigger configuration. After that the transmissions depend on the transmit trigger configuration.
If the transmit trigger is configured for the external trigger and:
If the external trigger input (either nPISTR1 or 2) is low when TMC2084 comes out of reset, then both the
input data and the NST are returned with zeroes set as their values. If the external trigger input is High, it
returns the data taken from the INPUT PORTs and NST at the time the INITIAL SETTING packet is
received. However, when the NST latch is not used, typically current contents of the counter are
transmitted as the NST value.
For the START TRANSMIT commands that are received after the first START TRANSMIT command, it
returns the data that are taken from the input data and the NST at the time the preceding external trigger is
inputted. However, when the NST latch is not used, usually the current contents of the counter are
transmitted as NST value.
INITIALIZE OUTPUT PORT command (CMD7 - 0 = 0000 to 0111 = 07h)
Operation: Places all of OUTPUT PORTs in high-impedance state.
Response: If any START TRANSMIT command is already received, then TMC2084 sends the INPUT
DATA packet upon receiving own token. Otherwise, it sends nothing.
SOFTWARE RESET command (CMD7 - 0 = 1000 to 1111 = 8Fh)
Operation: Executes the software reset (i.e., it resets the communication section of the TMC2084), sets all
I/O ports to high-impedance state and initializes the configuration data configured through the network to
default values, then adds TMC2084 to the network automatically. The transmit trigger is also disabled
(disabled transmission).
Response: None
After receiving the software reset command, software reset is executed within 100 μS (@2.5 Mbps) or
less.
(The100 μS becomes 50 μS at 5 Mbps, and 200 μS at 1.25 Mbps)
TM
Controller
DATASHEET
Page 33
Revision 0.2 (10-23-08)