Altera JESD204B IP Manual do Utilizador Página 111
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Signal Clock Domain Direction Description
csr_f[7:0]
(35)
mgmt_clk
Input
Indicates the number of octets per frame. This 8-
bit bus represents the F value in zero-based
binary format. For example, if F = 2, the csr_
f[7:0] = "00000001". This design example
supports the following values:
• 00000000
• 00000001
• 00000011
• 00000111
Any programmed value beyond the supported
range may result in undeterminable behavior in
the transport layer. You must ensure that the
csr_f[7:0] value always match the system
parameter F value.
Connect this signal to the RX DLL csr_f[]
output pin.
csr_n[4:0]
(35)
mgmt_clk
Input
Indicates the converter resolution. This 5-bit bus
represents the N value in zero-based binary
format. For example, if N = 16, the csr_n[4:0] =
"01111". This design example supports the
following values:
• 01011
• 01100
• 01101
• 01110
• 01111
Any programmed value beyond the supported
range may result in undeterminable behavior in
the transport layer. You must ensure that the
csr_n[4:0] value always match the system
parameter N value.
Connect this signal to the RX DLL csr_n[]
output pin.
RX Path Operation
The data transfer protocol between the Avalon-ST interface and the RX path transport layer is data
transfer without backpressure. Therefore, the sink shall always be ready to sample the incoming data
whenever data at the source is valid.
5-30
RX Path Operation
UG-01142
2015.05.04
Altera Corporation
JESD204B IP Core Design Guidelines
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- JESD204B IP Core User Guide 1
- Contents 2
- Item Description 4
- Datapath Modes 8
- IP Core Variation 8
- Run-Time Configuration 9
- Channel Bonding 10
- About the JESD204B IP Core 13
- Getting Started 15
- Upgrading IP Cores 16
- IP Core Status Description 17
- Design Walkthrough 20
- Programming an FPGA Device 25
- Pin Assignments 26
- JESD204B IP Core Parameters 30
- Parameter Value Description 31
- JESD204B IP Core Testbench 35
- Configuration Preset Value 36
- Testbench Simulation Flow 37
- Subscribe 38
- Frame Clock 39
- Transmitter 41
- TX Data Link Layer 42
- Configura‐ 43
- Description 43
- MSB 6 5 4 3 2 1 LSB 43
- User Data Phase 44
- Receiver 45
- RX Data Link Layer 46
- Frame Alignment 47
- Lane Alignment 47
- ILAS Data 48
- Initial Lane Synchronization 48
- RX PHY Layer 49
- Operation 50
- Scrambler/Descrambler 51
- SYNC_N Signal 51
- Link Reinitialization 53
- Link Startup Sequence 54
- Device Clock 57
- Link Clock 58
- Local Multi-Frame Clock 59
- Clock Correlation 60
- Reset Scheme 61
- Reset Sequence 62
- Registers 80
- Access Type Definition 81
- Design Example Components 84
- PLL Reconfiguration 85
- Operation Avalon-MM 86
- Interface Signal 86
- Byte Address 86
- Offset (6bits) 86
- Bit Value 86
- Transceiver Reset Controller 87
- Pattern Generator 87
- Pattern Checker 88
- Transport Layer 89
- F Parameter f 90
- (txframe_clk frequency) f 90
- (rxframe_clk frequency) 90
- TX Path Data Remapping 100
- Altera Corporation 100
- Send Feedback 100
- UG-01142 104
- 2015.05.04 104
- F FRAMECLK_DIV TX Latency 105
- Parameter Description Value 106
- Related Information 113
- RX Path Data Remapping 114
- Serial Port Interface (SPI) 117
- Control Unit 118
- Memory Block (ROM) 119
- Finite State Machine (FSM) 120
- System Parameters 121
- Run-Time Reconfiguration 124
- System Interface Signals 125
- Signal Clock 128
- Direction Description 128
- PHY (Stratix V and Arria V) 133
- Implementation Guidelines 139
- Programmable RBD Offset 140
- Programmable LMFC Offset 143
- K K K K K RK K K K K 146
- D D D DK D D 146
- DK D DK K K 146
- Clocking Scheme 148
- JESD204B Parameters 148
- SPI Programming 149
- Additional Information 155
- Date Version Changes 156
- How to Contact Altera 157
- Contact Method Address 158
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