Altera JESD204B IP User Manual Page 61
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Related Information
• Device Clock on page 4-20
• Link Clock on page 4-21
• Local Multi-Frame Clock on page 4-22
Reset Scheme
All resets in the JESD204B IP core are synchronous reset signals and should be asserted and deasserted
synchronously.
Note: Ensure that the resets are synchronized to the respective clocks for reset assertion and deassertion.
Table 4-4: JESD204B IP Core Resets
Reset Signal Associated Clock Description
txlink_rst_n
rxlink_rst_n
TX/RX Link Clock Active low reset controlled by the clock and
reset unit.
Altera recommends that you:
• Assert the txlink_rst_n/rxlink_rst_n
and txframe_rst_n /rxframe_rst_n
signals when the transceiver is in reset.
• Deassert the txlink_rst_n and txframe_
rst_n signals after the Altera PLL IP core is
locked and the tx_ready[] signal from the
Transceiver Reset Controller is asserted.
• Deassert the rxlink_rst_n and rxframe_
rst_n signals after the Transceiver CDR
rx_islockedtodata[] signal and rx_
ready[] signal from the Transceiver Reset
Controller are asserted.
The txlink_rst_n/rxlink_rst_n and
txframe_rst_n /rxframe_rst_n signals can
be deasserted at the same time. These resets
can only be deasserted after you configure the
CSR registers.
txframe_rst_n
rxframe_rst_n
TX/RX Frame Clock Active low reset controlled by the clock and
reset unit. If the TX/RX link clock and the TX/
RX frame clock has the same frequency, both
can share the same reset.
4-24
Reset Scheme
UG-01142
2015.05.04
Altera Corporation
JESD204B IP Core Functional Description
Send Feedback
- 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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