77
Figure 6-1 Function Block Diagram of the QDRII+ SRAM x4 Demonstration
The QDRIIA/B/C/D_REFCLK is generated from Si5340B which configured 275MHz for
QDRII+ 550MHz by Clock Config module. QDRIIA/B/C/D_REFCLK has no default
frequency output so that they must be configured first.
In this demonstration, each QDRII+ SRAM has its own PLL, DLL and OCT resources.
The Arria 10 EMIF QDRII IP uses a Hard PHY and a soft Controller. The Hard PHY
capable of performing key memory interface functionality such as read/write leveling,
FIFO buffering to lower latency and improve margin, timing calibration, and on-chip
termination.
The Avalon bus read/write test (RW_test) modules read and write the entire memory
space of each QDRII+ SRAM through the Avalon interface of each controller. In this
project, the RW_test module will first write the entire memory and then compare the
Содержание TR10a-HL
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Страница 71: ...71 Figure 5 14 Si5340A Demo Figure 5 15 Si5340B Demo...
Страница 82: ...82 Figure 6 3 Progress and Result Information for the QDRII Demonstration...
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Страница 111: ...111 Figure 8 5QSFP Transceiver Loopback Test in Progress Figure 8 6QSFP Transceiver Loopback Done...