TMC2084-HD SMSC, TMC2084-HD Datasheet - Page 43

• 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

Standalone Mode CircLink
Datasheet
NOTE:
NOTE:
SMSC TMC2084
This flag is asserted in the following events:
No error source bit is available for RXERR.
CMIECC
The state transition diagram for CMI describes that no potential symbol received is regarded as the
nearest potential symbol received. For an example, receiving no potential symbol 10 allows the CMI
receiver to interpret that the correct symbol either 11 or 00 was changed to 10 due to an error. Receiving
another 11 illegally immediately after symbol 11 enables the CMI receiver to think that the correct symbol
would be 00, inversely if the preceding 00 is received then the correct symbol would be 11. On the other
hand, receiving another 11 (00) immediately after 11 (00) allows selecting 01 as correct symbol. For more
information, see section 2.10 CMI Coding.
NSTUNLOC
a)
The C.P in the received packet exceeded the Page Size (40h or 80h) or it was equal to the
value (01h or 02h) that means the header area. Potential causes: Incorrect configuration in
host node side.
b)
The packet data of which frame format violated the token passing protocol was received.
Potential causes: Mismatch in the configuration for such as transmission rate or coding
scheme.
c)
The data size that was actually received was different from the value C.P indicated. The
device failure is only potential cause.
d)
The received packet data had incorrect CRC code. Potential causes: Unreliable physical
line.
e)
The CMI demodulator encountered error correction. (This is considered as an error only if
CMIERRMD = 1 is configured through network)
CP error
Frame error
Length error
CRC error
CMI decoding error (CMIERRMD = 1)
TM
Controller
Indicates that CMI decoder corrected an error in the received data.
1: An error was corrected.
0: Non error
Indicates the NST synchronization state between the CM and own nodes. For detail
information, see the section 2.9 NST Time Stamps.
1: Not locked to NST of the CM node.
0: Locked (synchronized) to NST of the CM node.
Although this flag has the same meaning as the NSTUNLOC bit of the FLAG OUTPUT, it
acts differently:
This status bit: Once It is set to ”1,” it remains in the ”1” state until it is cleared.
FLAG OUTPUT: The Lock/Unlock sate is reflected to the output pin immediately.
DATASHEET
Page 43
Revision 0.2 (10-23-08)