TMC2074-NE SMSC, TMC2074-NE Datasheet - Page 81

• Manufacturer Part Number: TMC2074-NE
• Description: Network Controller & Processor ICs Standalone Mode CircLink Cntlr
• Manufacturer: SMSC

Specifications of TMC2074-NE

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

Dual Mode CircLink™ Controller
Datasheet
NOTE:
SMSC TMC2074
- When reading/writing: ARCNET SETUP1 register
FOURNAKS (bit 6)
This bit specifies the number of NAK responses to the "Free Buffer Enquiry", function of the EXCNAK bit of
the diagnostic register. Setting 1 to this bit specifies 4 times, and to 0 specifies 128 times.
CKP [2:0] (bits 3 to 1)
INIMODE = 1 specifies the communication speed (transfer rate). This function is the same as that of the
CKP register described in 3.2.25, which is usually used instead of this register.
*1: Not equivalent to the ARCNET original specifications.
(Reduction the number of bits and function modifications)
Do not write to this register.
- When reading: ARCNET NEXT ID register
NEXTID [4:0] ( bit 4 to 0)
It is possible for the node to read out value of the node ID from a sending node. In CircLink, the following
ID value is fixed to the ID value of the node + 1. In case of no response after sending the token to the node
of ID value equaling to the node ID + 1 (absent receiver) and the token is passed to another node, the
NXTIDERR bit of the diagnostic register will be set to 1.
*1: Not equivalent to the ARCNET original specifications. (Function elimination)
*1
*1
COMR7-0010
[READ/WRITE]
COMR7-0011
[READ ONLY]
15-8
3-1
15-5
bit
4-0
7
6
5
4
0
bit
name
--------
--------
FOURNAKS
--------
--------
CKP2-0
--------
(Setup1 Register)
(Next ID Register)
name
--------
NEXTID4-0
DATASHEET
init. value
init. value
all "0"
0,0,0
0
1
0
0
0
0
0
Page 81
description
reserved (all "0")
reserved ("1")
Four NACKS
reserved ("0")
reserved ("0")
Clock Prescaler Bits 2,1,0
reserved ("0")
description
reserved (all "0")
Next Node ID
SUBAD=0010
SUBAD=0011
address:0Eh
address:0Eh
Revision 0.2 (10-23-08)