Altera CPRI IP Core Manuel d'utilisateur Page 134
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- Table des matières
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
7–18 Chapter 7: Software Interface
MAP Interface and AUX Interface Configuration Registers
CPRI MegaCore Function December 2013 Altera Corporation
User Guide
enable
[0] RW Enable mapping of IQ sample into current timeslot.
1'h0
Note to Table 7–35:
(1) Currently configurable entry in the advanced mapping Rx table. This register applies only to
map_mode
01, 10, or 11, the advanced mapping
modes.
Table 7–35. CPRI_MAP_TBL_RX—Advanced Mapping Rx Configuration Table—Offset: 0x110
(1)
(Part 2 of 2)
Field Bits Access Function Default
Table 7–36. CPRI_MAP_TBL_TX—Advanced Mapping Tx Configuration Table—Offset: 0x114
(1)
Field Bits Access Function Default
RSRV
[31:29] UR0 Reserved.
3’h0
width
[28:24] RW
Width of IQ sample in timeslot. Specified as 1/2 the
number of bits in the IQ sample.
This field is used in 15-bit mode with advanced mapping
mode 01 and in 16-bit mode with all advanced mapping
modes. In 15-bit mode with advanced mapping modes 10
and 11, you must set this field to the value of 15 to indicate
the full 30 bits of the 32-bit timeslot.
5'h0
RSRV
23:21] UR0 Reserved.
3’h0
position
[20:16] RW
Starting bit position of IQ sample in timeslot. Specified as
1/2 the bit position number.
This field is used in 15-bit mode with advanced mapping
mode 01 and in 16-bit mode with all advanced mapping
modes. In 15-bit mode with advanced mapping modes 10
and 11, you must set this field to the offset of the next
available bit for your 30-bit sample in the current 32-bit
timeslot.
5'h0
RSRV
[15:WIDTH_N_MAP+8] UR0 Reserved.
0
ac
[WIDTH_N_MAP +7:8] RW AxC interface number.
0
RSRV
[7:1] UR0 Reserved.
7'h0
enable
[0] RW Enable mapping of IQ sample into current timeslot.
1'h0
Note to Table 7–36:
(1) Currently configurable entry in the advanced mapping Tx table. This register applies only to
map_mode
01, 10, or 11, the advanced mapping
modes.
Table 7–37. CPRI_MAP_OFFSET_RX—MAP Rx Frame Offset
(1), (2)
—Offset: 0x118 (Part 1 of 2)
Field Bits Access Function Default
RSRV
[31:17] UR0 Reserved.
15'h0
map_rx_hf_resync
[16] RW
Enables synchronization every hyperframe instead of every radio
frame. When asserted, the
map_rx_offset_z
field is ignored.
1’h0
map_rx_offset_z
[15:8] RW
Hyperframe number for start of MAP receiver AxC container block
write to each enabled mapN Rx buffer.
8’h0
- User Guide 1
- CPRI MegaCore Function 1
- Contents 3
- Chapter 5. Testing Features 4
- ContentsContents v 5
- General Description 8
- CPRI IP Core Features 10
- Device Family Support 11
- MegaCore Verification 12
- Release Information 14
- Installation and Licensing 15
- OpenCore Plus Evaluation 16
- 2. Getting Started 17
- Specifying Parameters 18
- Simulation Files 19
- Simulating the Design 20
- Supporting the Transceivers 21
- Specifying Constraints 21
- 3. Parameter Settings 25
- Operation Mode Parameter 26
- Line Rate Parameter 26
- Enable Autorate Negotiation 27
- Rx Elastic Buffer Depth 27
- Include MAC Block 28
- Include HDLC Block 29
- Mapping Mode 29
- Application Layer Parameters 30
- Words” on page 4–42 32
- 4. Functional Description 33
- Architecture Overview 34
- CPRI IP Core Clocks 35
- Clocking Structure 36
- Notes to Table 4–2: 42
- Reset Requirements 43
- MegaCore 44
- Function 44
- MAP Interface Mapping Modes 45
- Basic AxC Mapping Mode 46
- MAP Interface 47
- Note to Table 4–5: 49
- Note to Table 4–6: 49
- Advanced AxC Mapping Modes 50
- MAP Receiver Interface 50
- Notes to Table 4–7: 51
- MAP Receiver in FIFO Mode 52
- MAP Transmitter Interface 56
- Notes to Table 4–10: 57
- MAP Transmitter in FIFO Mode 58
- Auxiliary Interface 62
- AUX Receiver Module 63
- Avalon-ST 32-bit interface 64
- AUX Transmitter Module 66
- Note to Figure 4–19: 67
- MII Transmitter 70
- MII Receiver 71
- CPU Interface 73
- Control Word Order 78
- Transmitting Ethernet Traffic 80
- Receiving Ethernet Traffic 81
- Accessing the HDLC Channel 82
- Note to Table 4–15: 83
- Features 84
- Physical Layer Architecture 84
- Receiver 85
- High-Speed Transceiver 86
- Rx Elastic Buffer 86
- Descrambling 87
- Frame Synchronization 87
- Alarm Indications 88
- Reset Control Word 89
- Transmitter 90
- Scrambling 91
- Tx Elastic Buffer 91
- External Loopback 93
- CPRI IP Core 93
- Internal Reverse Loopback 94
- Physical Layer Loopback Mode 94
- (1) (2) (3) 96
- MAP Receiver Signals 99
- 6–2 Chapter 6: Signals 100
- MAP Interface Signals 100
- MAP Transmitter Signals 101
- 6–4 Chapter 6: Signals 102
- Auxiliary Interface Signals 103
- AUX Receiver Signals 104
- AUX Transmitter Signals 105
- 6–8 Chapter 6: Signals 106
- Extended Rx Status Signals 107
- CPRI MII Receiver Signals 108
- CPRI MII Transmitter Signals 108
- CPU Interface Signals 109
- CPRI Data Signals 110
- Layer 1 Error Signal 111
- Autorate Negotiation Signals 111
- 6–14 Chapter 6: Signals 112
- Physical Layer Signals 112
- Transceiver Signals 113
- 6–16 Chapter 6: Signals 114
- Note to Table 6–14: 115
- 6–18 Chapter 6: Signals 116
- 7. Software Interface 117
- Note to Table 7–5: 119
- CPRI_HW_RESET 123
- register, refer to “Reset 123
- Requirements” on page 4–11 123
- Note to Table 7–13: 124
- Note to Table 7–16: 125
- Note to Table 7–17: 126
- Note to Table 7–20: 126
- Notes to Table 7–21: 127
- Notes to Table 7–28: 130
- Notes to Table 7–29: 130
- Note to Table 7–32: 133
- Note to Table 7–33: 133
- Note to Table 7–34: 133
- Note to Table 7–35: 134
- Note to Table 7–36: 134
- Notes to Table 7–37: 135
- Notes to Table 7–38: 135
- Notes to Table 7–39: 136
- Notes to Table 7–40: 136
- Note to Table 7–45: 137
- Ethernet Registers 138
- HDLC Registers 143
- Note to Figure 8–1: 150
- Test Sequence 151
- Running the Testbench 153
- A. Initialization Sequence 155
- Negotiation 157
- Notes for Figure B–1: 158
- Running Autorate Negotiation 159
- Notes to Table C–3: 167
- D. Advanced AxC Mapping Modes 173
- Fifteen-Bit Width Mode 175
- Sixteen-Bit Width Mode 176
- Note to Figure D–2: 177
- Delay Requirements 179
- RE SlaveREC Master 180
- Rx Path Delay 181
- Most CPRI IP Core Variations 181
- Single-Hop Delay Measurement 182
- Notes to Table E–1: 183
- Notes to Table E–2: 184
- Notes to Table E–3: 186
- Arria V GT 9.8 Gbps 188
- Notes to Table E–4: 189
- Tx Path Delay 190
- Note to Table E–6: 192
- T_txv_TX 194
- in Figure E–1 on page E–2 194
- Round-Trip Delay 196
- Round-Trip Cable Delay 196
- Families 202
- Round-Trip Delay Calculation 205
- Multi-Hop Delay Measurement 206
- Additional Information 213
- Document Revision History 214
- How to Contact Altera 218
- Typographic Conventions 218
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