TMC2072-MD SMSC, TMC2072-MD Datasheet - Page 47

• Manufacturer Part Number: TMC2072-MD
• Description: Network Controller & Processor ICs Peripheral Mode CircLink Cntlr
• Manufacturer: SMSC

Specifications of TMC2072-MD

• Product: Controller Area Network (CAN)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Peripheral Mode CircLink™ Controller
Datasheet
2.10
NOTE:
2.11
SMSC TMC2072
Diagnostic Mode = OFF , Node Number n=5
Diagnostic Mode = ON , Node Number n=5+1
* Because the #06 Node does not exist increment to 31
Node Number nDIAG Pin Node that give TOKEN Designate MAXID
Node Number nDIAG Pin Node that give TOKEN Designate MAXID
Diagnostic Mode
Diagnostic mode allows node number #31
The Diagnostic mode is set by setting the nDIAG pin to 0. The Diagnostic mode pin should be set only on
the node with largest node number (#n) in the network; on the other nodes it should be tied to 1.
Moreover, CircLink, when receiving a packet from node number #31, latches the last MSB (bit 7) of the last
byte and outputs it to the external output, FLASHO. This function is effective regardless of the nDIAG pin
status, and enables node #31(*1) to control the FLASHO outputs of other nodes. After hardware reset, the
external output FLASHO stays in Hi-Impedance state until a packet is received.
(*1)
Network Standard Time (NST)
Network standard time (NST) is a 16-bit free-running counter. Each node adjusts the time after receiving a
packet from the clock master node (CM node), ensuring that all nodes share the common standard time on
the network. This minimizes phase deviation among nodes to within about 100 μs.
#01
#02
#03
#04
#05
#01
#02
#03
#04
#05
#31
Changes depending on the page size setting (PS[1:0]: See Below).
128B (PS[1:0]=01)
256B (PS[1:0]=00)
32B (PS[1:0]=11)
64B (PS[1:0]=10)
Page Size
"1"
"1"
"1"
"1"
"1"
"1"
"1"
"1"
"1"
"0"
"1"
DATASHEET
(*1)
Page 47
to temporarily join a network consisting of 30 or less nodes.
Node ID For diagnosis
#06 *
#02
#03
#04
#05
#01
#02
#03
#04
#05
#01
#31(1Fh)
#15(Fh)
#7(7h)
#3(3h)
#31(Compulsion)
Revision 0.1 (06-07-07)
#05
#05
#05
#05
#05
#05
#05
#05
#05
#31