Dual Mode CircLink™ Controller
Datasheet
2.6.2
Interface Restrictions .....................................................................................................................................34
2.7
CircLink Operation and Communication Modes ..........................................................................................35
2.7.1
Operational Mode ..........................................................................................................................................35
2.7.2
Communication Mode ....................................................................................................................................36
2.8
Sending in Peripheral Mode ...........................................................................................................................38
2.8.1
Example of Sending Control from CPU in Free Format Mode .......................................................................38
2.8.2
TX Control from CPU in Remote Buffer Mode ...............................................................................................39
2.9
Receive in Peripheral Mode............................................................................................................................39
2.9.1
Temporary Receive and Direct Receive ........................................................................................................40
2.9.2
Example of Receive Flow in Free Format Mode ............................................................................................43
2.9.3
Example of Receive Flow in Remote Buffer Mode.........................................................................................44
2.9.4
Warning Timer (WT) at Remote Buffer Receive ............................................................................................44
2.10
2.10.1
2.10.2
2.10.3
2.11
2.12
2.12.1
2.12.2
2.12.3
2.12.4
2.13
2.14
2.14.1
2.14.2
2.15
Standalone Mode .........................................................................................................................................47
General Description of Standalone Mode...................................................................................................47
Sending in Standalone Mode .....................................................................................................................47
Reception in Standalone Mode ..................................................................................................................50
Diagnostic Mode ..........................................................................................................................................54
Network Standard Time (NST) ....................................................................................................................55
Functions Provided by NST........................................................................................................................55
Time-synchronous Sequence.....................................................................................................................56
Phase Error ................................................................................................................................................57
nNSTCOUT Pulse Generation Cycle .........................................................................................................60
CMI Modem...................................................................................................................................................62
HUB Function...............................................................................................................................................62
Operation Example of HUB Function .........................................................................................................64
Timer Expansion in Multi-stage Cascade Connection ................................................................................65
8-Bit General-purpose I/O Port (New function) .........................................................................................66
Description of Registers ......................................................................................................................67
Chapter 3
3.1
Register Map....................................................................................................................................................67
3.2
Details of Register ...........................................................................................................................................70
3.2.1
COMR0 Register: Status/interrupt Mask Register..........................................................................................70
3.2.2
COMR1 Register: Diagnostic/Command Register .........................................................................................72
3.2.3
COMR2 Register: Page Register ...................................................................................................................74
3.2.4
COMR3 Register: Page-internal Address Register ........................................................................................75
3.2.5
COMR5 Register: Sub-address Register .......................................................................................................77
3.2.6
COMR6 Register: Configuration Register ......................................................................................................78
3.2.7
COMR7 Register............................................................................................................................................80
3.2.8
NST Register: Network Standard Time..........................................................................................................84
3.2.9
INTSTA Register: EC Interrupt Status ...........................................................................................................84
3.2.10
INTMSK Register: EC Interrupt Mask.........................................................................................................87
3.2.11
ECCMD Register: EC Command Register .................................................................................................88
3.2.12
RSID Register: Receive SID ......................................................................................................................89
3.2.13
SSID Register: SID.....................................................................................................................................89
3.2.14
RXFH Register: Receive Flag (higher side)................................................................................................90
3.2.15
RXFL Register: Receive Flag (lower side)..................................................................................................91
3.2.16
CMID Register: Clock Master Node ID.......................................................................................................92
3.2.17
MODE Register: Operation Mode Setup Register ......................................................................................93
3.2.18
CARRY Register: Carry Selection for External Output ...............................................................................95
3.2.19
RXMH register: Receive mode (higher side) ..............................................................................................96
3.2.20
RXML Register: Receive Mode (lower side)...............................................................................................97
3.2.21
MAXID Register: Selection of Max. ID........................................................................................................98
3.2.22
NID Register: Selection of the Node ID ......................................................................................................98
3.2.23
PS Register: Page Size Selection ..............................................................................................................99
Revision 0.1 (03-29-06)
Page 4
SMSC TMC2074
DATASHEET
SMSC [ SMSC CORPORATION ]
