DESIGN OF A CUSTOM ASIC INCORPORATING CAN™ AND 1 ...

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LIST <strong>OF</strong> TABLES 2.1 Port Adapters for 1 – Wire® Devices ..........................................................................................18 2.2 1 – Wire® Bus Operations ...........................................................................................................20 2.3 1 – Wire® Bit Search Information ...............................................................................................23 2.4 1 – Wire® Master and Slave Search Sequence............................................................................24 2.5 1 – Wire® Search Path Direction ................................................................................................25 3.1 Frame Types and Roles of Each Frame .......................................................................................47 3.2 Data Length Code Field ...............................................................................................................49 3.3 Types of Errors ............................................................................................................................61 3.4 Error Flag Output Timing ............................................................................................................62 3.5 Types of Segments and Their Roles ............................................................................................68 4.1 Address claim status and reserved bits ........................................................................................90 4.2 Time-Triggered vs. Event-Triggered ...........................................................................................94 4.3 Categorization of Real-Time Systems .........................................................................................96 4.4 Time Savings for a Read ROM Function ....................................................................................103 4.5 Parameters of Impact ...................................................................................................................107 4.6 Results Matrix ..............................................................................................................................108 4.7 Example results with N 20 .......................................................................................................110 5.1 1 – Wire® Register Addresses .....................................................................................................116 5.2 Clock Divisor Register Settings for Input Clock Rates ...............................................................128 xvii
5.3 Resource Utilization.....................................................................................................................131 5.4 Single Search ROM (single_search_rom) Test Results ...............................................................134 5.5 Multiple One-Wire Network (multi_ow_network) Test Results .................................................135 5.6 Scratchpad Memory (scratchpad_integrity) Test Results ............................................................137 5.7 Command Recognition (cmd_recognition) Test Results .............................................................138 5.8 Control Registers .........................................................................................................................145 5.9 Synchronization Jump Width (SJW) ...........................................................................................156 5.10 Baud Rate Prescaler ...................................................................................................................156 5.11 Time Segment Values ................................................................................................................158 5.12 Output Control Modes ...............................................................................................................159 5.13 Output Control Bits ....................................................................................................................161 5.14 CAN driver output levels .......................................................................................................161 5.15 Transmit Buffer Registers ..........................................................................................................161 5.16 Data Length Code Bits ...............................................................................................................163 5.17 Receive Buffer Registers ...........................................................................................................164 5.18 CAN Node Message Identifiers .............................................................................................169 5.19 Resource Utilization...................................................................................................................182 5.20 Bus-Off Test (bus_off_test) Results ..........................................................................................185 5.21 Send Basic Frame (send_frame_basic) Test Results .................................................................190 5.22 Send Extended Frame (send_frame_extended) Test Results .....................................................191 6.1 Resource Utilization.....................................................................................................................194 6.2 Test Results ..................................................................................................................................200 xviii
Page 1 and 2: DESIGN OF A CUSTOM ASIC INCORPORATI
Page 3 and 4: ABSTRACT The vast majority of today
Page 5 and 6: LIST OF ABBREVIATIONS AND SYMBOLS A
Page 7 and 8: ISO International Organization for
Page 9 and 10: SI Serial In SO Serial Out SOF Star
Page 11 and 12: ACKNOWLEDGEMENTS I would like to ex
Page 13 and 14: 2.4 Types of Devices...............
Page 15 and 16: 4.3.5 Communication Speed Different
Page 17: 5.3.21.1 Synchronization Test (test
Page 21 and 22: LIST OF FIGURES 2.1 1 - Wire® Netw
Page 23 and 24: 4.12 Read-Data Time Slot...........
Page 25 and 26: 6.4 DS1996 Address Registers ......
Page 27 and 28: manufacturing process. Structured o
Page 29 and 30: describes the 1 - Wire® and CAN co
Page 31 and 32: 2.2 1 - Wire® Overview The basis o
Page 33 and 34: All 1 - Wire® masters described in
Page 35 and 36: attachments, microcontroller with b
Page 37 and 38: Figure 2.3 Bidirectional port pin w
Page 39 and 40: 2.3.3 Synthesizable 1 - Wire® Bus
Page 41 and 42: Figure 2.7 UART/RS232 Serial Port I
Page 43 and 44: hardware. Through control registers
Page 45 and 46: Table 2.2 1 - Wire® Bus Operations
Page 47 and 48: 2.3.6 1 - Wire® Search Algorithm F
Page 49 and 50: detected. This ‘read two bits’
Page 51 and 52: in Figure 2.15. Alternatively, the
Page 53 and 54: of the bit, then write the desired
Page 55 and 56: 2.4.2 Device Functions and Typical
Page 57 and 58: and development (R&D) investments b
Page 59 and 60: 2.5 Network Types and Precedents As
Page 61 and 62: 2.5.2 1 - Wire® Network Topologies
Page 63 and 64: 2.5.3 1 - Wire® Network Limitation
Page 65 and 66: with a single selected slave. If an
Page 67 and 68: user group was founded in March of
Page 69 and 70:
protocol on multiple media for maxi
Page 71 and 72:
ecessive bit and the monitored stat
Page 73 and 74:
specification: Start-Of-Frame, Arbi
Page 75 and 76:
Cyclic Redundancy Check (CRC) Field
Page 77 and 78:
Arbitration FieldThe Arbitration Fi
Page 79 and 80:
SOF SOF Bit 28 Bit 27 Arbitration f
Page 81 and 82:
Afterwards it starts transmitting s
Page 83 and 84:
Figure 3.9 Structure of the Interfr
Page 85 and 86:
error occurs, an Error Frame is gen
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Table 3.4 Error Flag Output Timing
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3.5.2 Error-Passive A node becomes
Page 91 and 92:
where tNBT is the Nominal Bit Time
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Figure 3.12 Propagation Delay Betwe
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3.6.4 Synchronization t t t t (3.
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opposite value is inserted into the
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many systems, the bus length will b
Page 101 and 102:
CHAPTER 4 THE CHALLENGES OF INTERFA
Page 103 and 104:
In June 2004, Maxim Integrated Prod
Page 105 and 106:
Wearable sensor technology is a new
Page 107 and 108:
In traditional bus architectures, o
Page 109 and 110:
Figure 4.3 Centralized arbiter with
Page 111 and 112:
For the initial prototype design pr
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the ID of 31 transmits a ‘0’ (d
Page 115 and 116:
Recently, a technique has been prop
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procedure, then the address claim p
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paradigms are prevalent in the desi
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systems possess a higher flexibilit
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fixed identifier and hence a fixed
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348sm Cm 47 8 smbit 11-bit hea
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est-case latency occurs when the bu
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to break the 1 - Wire® network int
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ow, is most critical for power deli
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computations have device-specific p
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Table 4.7 Example results with N 2
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4.3.5 Communication Speed Different
Page 139 and 140:
anging” a port pin on a microproc
Page 141 and 142:
From Figure 5.1, the block I/O pins
Page 143 and 144:
5.2.2 Command Register In addition
Page 145 and 146:
specifies the selected bit value to
Page 147 and 148:
with i > m. This process is repeate
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Figure 5.6 Interrupt Register. OW_
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the INTR pin will be pulled high si
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master reset occurs. Table 5.2 show
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EN_FOW: Enable Force One Wire. Sett
Page 157 and 158:
READ_ROM - Used to read the 64-bit
Page 159 and 160:
5.2.8.1 Single Search ROM (single_s
Page 161 and 162:
5.2.8.3 Scratchpad Memory (scratchp
Page 163 and 164:
5.2.8.4 Command Recognition (cmd_re
Page 165 and 166:
TBF - The Transmit Buffer provides
Page 167 and 168:
compensate for the propagation dela
Page 169 and 170:
Figure 5.15 CAN Module memory map [
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‘0’, fast speed mode will be us
Page 173 and 174:
COMP-SEL: Comparator Select. When t
Page 175 and 176:
Figure 5.18 CAN Status Register. B
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that buffer is given to the CPU and
Page 179 and 180:
Acceptance Mask Registers (accepted
Page 181 and 182:
SJW1, SJW0: Synchronization Jump Wi
Page 183 and 184:
TSEG22 - TSEG10: Time Segment Bits.
Page 185 and 186:
The transmit clock (ttxclk) is used
Page 187 and 188:
5.3.13 CAN Module Transmit Buffer I
Page 189 and 190:
Figure 5.28 CAN Transmit Data Segme
Page 191 and 192:
5.3.20 CAN Node Overview As stated
Page 193 and 194:
Read Digital InputsRead the value o
Page 195 and 196:
the clock high time is either 5 µs
Page 197 and 198:
Yes Perform A/D Conversion on AN0 W
Page 199 and 200:
and GP2 and GP5 as outputs. With th
Page 201 and 202:
external INT pin, and then branches
Page 203 and 204:
Read MCP2515 Rx Buffer for Digital
Page 205 and 206:
When a valid message is received, t
Page 207 and 208:
Table 5.19 Resource Utilization. Re
Page 209 and 210:
For this test, only one CAN node wa
Page 211 and 212:
an Error Frame to be generated. Aft
Page 213 and 214:
messages, acknowledge messages, or
Page 215 and 216:
5.3.21.4 Send Basic Frame Test (sen
Page 217 and 218:
going from one node to 30 nodes (se
Page 219 and 220:
Table 6.1 Resource Utilization. Rev
Page 221 and 222:
6.2.1 Test Verification and Overvie
Page 223 and 224:
has read access to this register. T
Page 225 and 226:
system configuration used for this
Page 227 and 228:
or not depends on the number of rec
Page 229 and 230:
6.4. There are two receiving CAN no
Page 231 and 232:
CHAPTER 7 CONCLUSIONS AND FUTURE WO
Page 233 and 234:
a communication bus reset will occu
Page 235 and 236:
For the synthesizable CAN Controlle
Page 237 and 238:
additional CAN nodes were added to
Page 239 and 240:
Fall-Through Stack A LOW level on t
Page 241 and 242:
In conclusion, the prototype system
Page 243 and 244:
REFERENCES [1] IBM ASIC Products Ap
Page 245 and 246:
[22] “CAN - a brief tutorial for
Page 247 and 248:
[44] Microchip MCP2515 - Stand-Alon
Page 249 and 250:
[67] K. Tindell and A. Burns, “Gu
Page 251 and 252:
[88] “Verilog - A Language Refere
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