Altera RapidIO II MegaCore Function Uživatelský manuál Strana 124
- Strana / 218
- Tabulka s obsahem
- KNIHY
Hodnocené. / 5. Na základě hodnocení zákazníků
4–82 Chapter 4: Functional Description
Error Detection and Management
RapidIO II MegaCore Function August 2014 Altera Corporation
User Guide
■ Unsupported Transaction is declared when a request packet carries a transaction
type that is not supported in the
Destination
Operations
CAR (Table 6–29 on
page 6–30), whether an
ATOMIC
transaction type, a reserved transaction type, or an
implementation defined transaction type.
■ Illegal Transaction Decode is declared when a request packet for a supported
transaction is too short or if it contains illegal values in some of its fields such as in
these examples:
■ Request packet with
priority
=
3
.
■
NWRITE
,
NWRITE_R
, or
SWRITE
request packets without payload.
■
NWRITE
or
NWRITE_R
request packets with reserved
wrsize
and
wdptr
combination.
■
NWRITE
,
NWRITE_R
,
SWRITE
, or
NREAD
request packets for which the address does
not match any enabled address mapping window.
■
NREAD
request packet with
payload
.
■
NREAD
request with
rdsize
that is not an integral number of transfers on all byte
lanes. (The Avalon-MM interface specification requires that all byte lanes be
enabled for read transfers. Therefore, Read Avalon-MM master modules do not
have a byteenable signal).
■ Payload size does not match the size indicated by the
rdsize
or
wrsize
and
wdptr
fields.
Response Packets with ERROR Status
An
ERROR
response packet is sent for
NREAD
and
NWRITE_R
and Type 5
ATOMIC
request
packets that cause an
Illegal Transaction Decode
error to be declared. An
ERROR
response packet is also sent for
NREAD
requests if the
iom_rd_wr_readresponse
input
signal is asserted through the final cycle of the Avalon-MM read transfer.
Avalon-ST Pass-Through Interface
Packets with valid CRCs that are not recognized as being targeted to one of the
implemented Logical layer modules are passed to the Avalon-ST pass-through
interface for processing by user logic.
The RapidIO II IP core also provides hooks for user logic to report any error detected
by a user-implemented Logical layer module attached to the Avalon-ST pass-through
interface.
- User Guide 1
- RapidIO II MegaCore Function 1
- Contents 3
- Contents v 5
- Chapter 5. Signals 6
- Chapter 6. Software Interface 6
- Chapter 7. Testbench 6
- 1. About The RapidIO II 9
- MegaCore Function 9
- Releases 10
- RapidIO II IP Core Features 10
- Features 11
- Device Family Support 12
- IP Core Verification 13
- Hardware Testing 14
- Interoperability Testing 14
- Note to Table 1–3: 16
- Notes to Table 1–4: 16
- Installation and Licensing 17
- 2. Getting Started 19
- Simulating IP Cores 22
- Transceiver Settings 26
- External Transceiver PLL 26
- 3. Parameter Settings 31
- Note to Table 3–1: 32
- Enable 16-Bit Device ID Width 33
- Logical Layer Settings 34
- Capability Registers Settings 35
- Device ID 36
- Vendor ID 36
- Revision ID 36
- Assembly ID 36
- Assembly Information CAR 37
- Enable Flow Control Support 38
- Enable Switch Support 38
- Number of Ports 38
- Port Number 39
- Maximum PDU 39
- Destination Operations CAR 40
- Port General Control CSR 40
- Port 0 Control CSR 41
- Lane n Status 0 CSR 41
- Extended Features Pointer CSR 41
- 4. Functional Description 43
- Note to Table 4–2: 44
- Clocking and Reset Structure 45
- Notes to Table 4–3: 46
- RapidIO II 47
- Transactions 55
- Notes to Table 4–6: 57
- Notes to Table 4–7: 59
- Note to Table 4–8: 59
- Note to Figure 4–9: 66
- Note to Table 4–10: 70
- Notes to Table 4–11: 71
- Table 6–60 on page 6–40 72
- Note to Table 4–12: 73
- Maintenance Module 74
- Maintenance Interface Signals 75
- Doorbell Module Block Diagram 86
- Preserving Transaction Order 87
- Doorbell Module Signals 88
- Generating a Doorbell Message 88
- Receiving a Doorbell Message 89
- Transaction ID Ranges 90
- Notes to Table 4–24: 92
- Note to Table 4–26: 94
- Note to Table 4–27: 95
- field 97
- User Receiving Write Request 100
- Logical Layer Interfaces 101
- Transport Layer 112
- Receiver 113
- Transmitter 114
- Physical Layer 115
- Physical Layer Interfaces 116
- Low-level Interface Receiver 116
- CRC Checking and Removal 117
- Protocol Violations 119
- Fatal Errors 119
- Maintenance Avalon-MM Slave 120
- Maintenance Avalon-MM Master 121
- Port-Write Reception Module 122
- Input/Output Avalon-MM Slave 122
- Input/Output Avalon-MM Master 123
- 5. Signals 125
- Physical Layer Signals 126
- Low Latency Signals 127
- Multicast Event Signals 128
- Chapter 5: Signals 5–5 129
- Note to Table 5–7: 130
- Chapter 5: Signals 5–7 131
- 5–8 Chapter 5: Signals 132
- Register-Related Signals 133
- Avalon-MM Interface Signals 133
- Note to Table 5–12: 134
- Chapter 5: Signals 5–11 135
- Note to Table 5–15: 136
- Error Reporting Signals 137
- 5–14 Chapter 5: Signals 138
- 6. Software Interface 139
- Memory Map 140
- Physical Layer Registers 144
- Note to Table 6–9: 147
- Note to Table 6–14: 154
- Note to Table 6–15: 158
- Note to Table 6–17: 160
- Note to Table 6–22: 164
- Note to Table 6–23: 164
- Note to Table 6–24: 165
- Note to Table 6–25: 165
- Note to Table 6–26: 166
- Note to Table 6–27: 167
- Notes to Table 6–28: 168
- Notes to Table 6–29: 169
- Note to Table 6–30: 169
- Note to Table 6–31: 169
- Notes to Table 6–32: 170
- Note to Table 6–34: 171
- Note to Table 6–35: 171
- Note to Table 6–36: 172
- Note to Table 6–37: 172
- Transmit Port-Write Registers 174
- Receive Port-Write Registers 175
- Note to Table 6–59: 178
- Error Management Registers 180
- Note to Table 6–66: 181
- Notes to Table 6–67: 183
- Notes to Table 6–70: 185
- Notes to Table 6–71: 185
- Doorbell Message Registers 191
- Note to Table 6–89: 193
- 7. Testbench 195
- 7–2 Chapter 7: Testbench 196
- Testbench Overview 196
- Testbench Sequence 197
- 7–4 Chapter 7: Testbench 198
- Chapter 7: Testbench 7–5 199
- SWRITE Transactions 200
- NREAD Transactions 200
- NWRITE_R Transactions 201
- NWRITE Transactions 202
- Doorbell Transactions 202
- Port-Write Transactions 203
- Testbench Completion 204
- Chapter 7: Testbench 7–11 205
- 7–12 Chapter 7: Testbench 206
- A. Initialization Sequence 207
- MegaCore Function v12.1 209
- Additional Information 213
- Info–2 Additional Information 214
- Document Revision History 214
- Additional Information Info–3 215
- Info–4 Additional Information 216
- Note to Table: 217
- Info–6 Additional Information 218
- Typographic Conventions 218
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