TMC2084-HD SMSC, TMC2084-HD Datasheet - Page 44

• 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)
MRCV
TKNRETF
RCPUM
If own node is the CM node, this flag always is ”0.”
If other node is CM node, this flag is ”1” by default. Be sure to clear this bit before you use
it to confirm the synchronization to the CM node.
*About approval condition for Synchronous lock /unlock state
- Unlock to lock state (NSTUNLOC=0)
The difference between own NST and NST from CM node enters within +/-2. And NST
from CM node must be received three times or more continuously, and all of those
differences must be within +/-2.
- Lock to unlock state (NSTUNLOC=1)
The difference between own NST and NST from CM node doesn’t enter within +/-2. Or
NST from CM node must be received three times or more continuously, and all of those
differences are not within +/-2.
Indicates that own packet was received normally.
1: Own packet was received.
0: Own packet was not received.
Receiving the broadcasted packet or others packet does not affect this bit.
Indicates that a token was retransmitted (Token retry).
1: Token retry was performed;
0: No token retry was performed
When a token did not arrive at the destination (own ID + 1), TMC2084 transmit it to the
same destination one more time. This may happen when the next node does not exist or
some reason like noise prevents token to arrive at the destination (own ID + 1). When non-
consecutive node ID numbers are used, this always happen at the neighboring node of
unused ID number.
Indicates that the C.P in the received packet had an invalid value; the correct value is 38h
for PSSL = H or 78h for PSSL = L. Potential cause: the host node has an incorrect
configuration. The received packet is discarded.
1: The C.P in the received packet had a value other than 38h/78h.
0: It had 38h/78h.
In the event that the C.P in the received packet exceeded the Page Size (40h for PLLS =
H or 80h for PSSL = L) or it was equal to the value (01h or 02h) that means the header
area, RXERR is asserted instead of RCPUM.
RCPUM=1 is generated by receiving the broadcast packet that it transmits when the
TMC2072/74 is set to Standalone mode when BRE=1 is set.
DATASHEET
Page 44
Standalone Mode CircLink
SMSC TMC2084
TM
Datasheet
Controller