Part 3: Ddr4 Dram - Alinx AXU2CGA User Manual

Part 3: DDR4 DRAM

There are two Micron DDR4 chips on the PS side of the AXU2CGA board,
which form a 32-bit data bus bandwidth and a total capacity of 1GB. There are
4 Micron DDR4 chips on the PS side of the AXU2CGB board, which form a
64-bit data bus bandwidth and a total capacity of 2GB. The maximum operating
speed of DDR4 SDRAM on the PS side can reach 1200MHz (data rate
2400Mbps). The specific configuration of DDR4 SDRAM is shown below.
Among them, U71 and U72 are only AXU2CGB mounted.
U3,U5,(U71,U72)
The hardware connection of DDR4 on the PS side is shown in Figure 3-1:
AXU2CGA PS side DDR4 SDRAM Pin Assignment:
Signal Name
PS_DDR4_DQS0_P
PS_DDR4_DQS0_N
PS_DDR4_DQS1_P
PS_DDR4_DQS1_N
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ZYNQ Ultrascale + FPGA Board AXU2CGA/B User Manual
Location
Table 3-1: DDR4 SDRAM Configuration
Figure 3-1: PS Side DDR4 DRAM Schematic
PS_DDR_DQS_P0_504
PS_DDR_DQS_N0_504
PS_DDR_DQS_P1_504
PS_DDR_DQS_N1_504
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Capacity
256M x 16bit
Pin Name
Manufacturer
Micron
Pin Number
AF21
AG21
AF23
AG23