参数资料
型号: IP-SRAM/QDRII
厂商: Altera
文件页数: 48/68页
文件大小: 0K
描述: IP QDRII SRAM CONTROLLER
标准包装: 1
系列: *
类型: MegaCore
功能: QDRII SRAM 控制器
许可证: 初始许可证
Interfaces & Signals
Figure 3–12. Isolated Read—Burst of Four (Narrow Mode)
avl_clk
avl_read
avl_data_rd[19:0]
avl_wait_request_rd
avl_data_read_valid
avl_data_rd[17:0]
qdrii_k
qdrii_a[19:0]
qdrii_rpsn
qdrii_cq
qdrii_cqn
0001
0001
0102
qdrii_q[17:0]
01 02 xx
xx
Figure 3–13 shows a single read request from the Avalon interface for a
burst of two. The principle is identical to the burst of four, but all the data
bits coming back are transferred onto the Avalon interface. The timing on
the QDRII SRAM interface is slightly different as the address is only
present for half a clock cycle.
Figure 3–13. Isolated Read—Burst of Two (Wide Mode)
avl_clk
avl_read
avl_data_rd[19:0]
avl_wait_request_rd
avl_data_read_valid
avl_data_rd[17:0]
qdrii_k
qdrii_a[19:0]
qdrii_rpsn
qdrii_cq
qdrii_cqn
qdrii_q[17:0]
0001
0001
01 02
0102
3–16 MegaCore Version 9.1
Altera Corporation
QDRII SRAM Controller MegaCore Function User Guide
November 2009
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