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Chapter 4: Functional Description 4–15
Logical Layer Interfaces
August 2014 Altera Corporation RapidIO II MegaCore Function
User Guide
Table 4–7 lists the write-request conversions the RapidIO II IP core performs for
RapidIO write request packets with
wrsize
value less than 4’b1100.
1001
(1)
0
0 1 0000_0000_1111_1100
1 1 1111_1100_0000_0000
1
0 1 0000_0000_0011_1111
1 1 0011_1111_0000_0000
1010
(1)
0
0 1 0000_0000_1111_1110
1 1 0000_0000_0111_1111
1
0 1 1111_1110_0000_0000
1 1 0111_1111_0000_0000
1011
0
0 1 0000_0000_1111_1111
1 1 1111_1111_0000_0000
1
0 1 1111_1111_1111_1111
1
(2)
1100
(3)
0 0 2 1111_1111_1111_1111
1 0 4 1111_1111_1111_1111
1101
(3)
0 0 6 1111_1111_1111_1111
1 0 8 1111_1111_1111_1111
1110
(3)
0 0 10 1111_1111_1111_1111
1 0 12 1111_1111_1111_1111
1111
(3)
0 0 14 1111_1111_1111_1111
1 0 16 1111_1111_1111_1111
Notes to Table 4–6:
(1) The RapidIO link partner should avoid read requests with this
rdsize
value, because the resulting byteenable
value is not allowed by the Avalon-MM specification. However, if the RapidIO II IP core receives a read request with
this
rdsize
value, the IP core issues these transactions on the I/O Logical layer Avalon-MM master interface with
the illegal byteenable values, to support systems in which user logic handles these byteenable values.
(2) This combination of
wdptr
and
rdsize
values is reserved. If the RapidIO II IP core receives this combination, it
sets the Unsupported Transaction bit (
UNSUPPORT_TRAN
) in the
Logical/Transport Layer Error Detect
CSR (Table 6–67 on page 6–43) and returns an
ERROR
response.
(3) If
rdsize
has a value greater than 4’b1011, and
address[0]
has the value of 1, the RapidIO II IP core sets the
Unsupported Transaction bit (
UNSUPPORT_TRAN
) in the
Logical/Transport Layer Error Detect
CSR
(Table 6–67 on page 6–43) and returns an
ERROR
response.
Table 4–7. Avalon-MM I/O Master Write Transaction Burstcount and Byteenable I (Part 1 of 3)
RapidIO Field Values Avalon-MM Signal Values
wrsize
(4
'
bxxxx)
wdptr
(1
'
bx)
address[0]
(1
'
bx)
Burstcount Byteenable (16
'
bxxxx_xxxx_xxxx_xxxx)
0000
0
0 1 0000_0000_1000_0000
1 1 1000_0000_0000_0000
1
0 1 0000_0000_0000_1000
1 1 0000_1000_0000_0000
Table 4–6. Avalon-MM I/O Master Read Transaction Burstcount (Part 2 of 2)
RapidIO Field Values Avalon-MM Signal Values
rdsize
(4
'
bxxxx)
wdptr
(1
'
bx)
address[0]
(1
'
bx)
Burstcount
Byteenable
(16
'
bxxxxxxxxxxxxxxxx)
- 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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