RFSoC Data Converter Evaluation Tool User Guide 32
UG1287 (v2018.2) October 1, 2018 www.xilinx.com
Chapter 4: Clocking
X-Ref Target - Figure 4-7
Figure 4-7: RF-DAC Multi-Tile Sync Clocking Structure
DAC 2
DAC 3
PL DDR
+ MIG
DMA
Stream
Mux
DAC 4
DAC 5
DAC 6
DAC 7
333 MHz
DAC 0 Analog Clock (PCB)
DAC 1 Analog Clock (PCB)
SYSREF (PCB)
PL SYSREF (PCB)
PL REF CLK (PCB)
MMCM
PL CLK
(Fabric
Clock)
User_sysref_dac
User_sysref_dac
(Fabric Clock)
PL CLK
Example:
Fs = 6.4 GHz
Interpolation = x1
SYREF = 8 MHz
PL SYSREF = 8 MHz
PL REF CLK = 200 MHz
Tile0 _DAC_
Clock out
Tile 0
Tile 1
PS
GP
IO
Sync
logic
To Tile0
channels
Multi-Tile Control
PL CLK = 400 MHz
Clock
Converter
Clock
Converter
Loopback
Component
Loopback
Component
AXIS FIFO
64 KS
AXIS FIFO
64 KS
Clock
Converter
Loopback
Component
AXIS FIFO
64 KS
Clock
Converter
Loopback
Component
AXIS FIFO
64 KS
To Tile1
channels
PL CLK
Tile1 _DAC_
Clock out
Multi-Tile Control
DAC 0
DAC 1
PL CLK
X21250-092118
X-Ref Target - Figure 4-8if
Figure 4-8: RF-DAC Control Signals for Multi-Tile Sync (Sync Block)
DAC 2
DAC 3
DAC 4
DAC 5
DAC 6
DAC 7
DAC 0 Analog Clock (PCB)
DAC 1 Analog Clock (PCB)
SYSREF (PCB)
User_sysref_dac (Fabric Clock)
PL CLK
Tile0 _DAC_Clock out
Tile 0
Tile 1
Multi-Tile Control
DAC 0
DAC 1
N-stage
Sync logic
PS
GPIO
Channel 5-6 Control
N-stage
Sync logic
PS Clock
DAC 0 to DAC 3
DAC 4 to DAC 7
Tile0 _clk
Tile1 _clk
Multi-Tile Control
Channel 0-4 Control
PL CLK
BUFG
MUX
PL CLK
Tile0 _DAC_Clock out
Multi-Tile Control
BUFG
MUX
X21251-092118
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