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MC-ACT-SDRAMDDR-NET датащи(PDF) 3 Page - Actel Corporation

номер детали MC-ACT-SDRAMDDR-NET
подробное описание детали  Double Data Rate SDRAM Controller
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производитель  ACTEL [Actel Corporation]
домашняя страница  http://www.actel.com
Logo ACTEL - Actel Corporation

MC-ACT-SDRAMDDR-NET датащи(HTML) 3 Page - Actel Corporation

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Verification and Compliance
Functional and timing simulation has been performed on the DDR SDRAM Controller using VHDL Test Benches. Simulation vectors used for verification are provided
with the core.
Signal Descriptions
The following signal descriptions define the IO signals.
Signal
Direction
Width
Description
Global Signals
SYS_CLK
Input
1
System clock
DDR_CLK_FB
Input
1
ddr_clk from DDR SDRAM
FPGA_CLK
Output
1
primary H-CLOCK clock used by core and available for host
interface
RESET
Input
1
Active high system reset
Interface to System
SYS_DATA_I
Input
SYS_DATA_BITS System write data
SYS_DATA_M
Input
SYS_MASK_BITS System write data mask
SYS_ADDR
Input
SYS_ADDR_BITS System address
SYS_CMD
Input
7
DDR command bus
SYS_DATA_O
Output
SYS_DATA_BITS System read data
SYS_DATA_VALID
Output
1
High when sys_data_o is valid
SYS_CMD_ACK
Output
1
High when command is accepted
CTLR_READY
Output
1
High when controller can accept a cmd
READ_EN
Output
1
When high, controller needs new data in 2 clocks
Interface to DDR SDRAM
DDR_ADDR
Output
DDR_ADDR_BITS DDR SDRAM address bus
DDR_DQ
Output
DDR_DATA_BITS DDR SDRAM data bus
DDR_DQS
Input/Output
8
DDR SDRAM data strobe
DDR_RAS
Input/Output
1
DDR SDRAM row address strobe
DDR_CAS
Output
1
DDR SDRAM column address strobe
DDR_WE
Output
1
DDR SDRAM write enable
DDR_BANK
Output
DDR_BANK_BITS DDR SDRAM bank bus
DDR_CLK
Output
1
DDR SDRAM clock
DDR_CLKB
Output
1
DDR SDRAM inverted clock
DDR_CS
Output
1
DDR SDRAM chip select
DDR_CKE
Output
1
DDR SDRAM clock enable
DDR_DM
Output
DDR_MASK_BITS DDR SDRAM data mask bus
Table 2: Core I/O Signals


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