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en:ztex_boards:ztex_fpga_boards:memory_tutorial_1_11 [2011/12/07 20:28] – 84.181.93.233 | en:ztex_boards:ztex_fpga_boards:memory_tutorial_1_11 [2012/02/09 17:32] (current) – stefan | ||
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TIMESPEC " | TIMESPEC " | ||
NET " | NET " | ||
- | |||
- | ############################################################################ | ||
- | # VCC AUX VOLTAGE | ||
- | ############################################################################ | ||
- | CONFIG VCCAUX=2.5; | ||
############################################################################ | ############################################################################ | ||
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===== Insert the Core into your VHDL code ===== | ===== Insert the Core into your VHDL code ===== | ||
- | Please | + | Please |
- Add the following inputs/ | - Add the following inputs/ | ||
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===== Setup the clock resource ===== | ===== Setup the clock resource ===== | ||
- | On [[http:// | + | On [[http:// |
The common case that the clock is generated from another clock is ignored by the MIG. | The common case that the clock is generated from another clock is ignored by the MIG. | ||
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RESET0 <= RESET_IN or (not DCM0_LOCKED) or DCM0_CLK_STATUS(2); | RESET0 <= RESET_IN or (not DCM0_LOCKED) or DCM0_CLK_STATUS(2); | ||
</ | </ | ||
- | - Apply the changes / patch listed below to to '' | + | - Apply the changes / patch listed below to to '' |
--- memc3_infrastructure.orig.vhd 2010-08-20 11: | --- memc3_infrastructure.orig.vhd 2010-08-20 11: | ||
+++ memc3_infrastructure.vhd 2010-08-20 11: | +++ memc3_infrastructure.vhd 2010-08-20 11: | ||
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=== Example 3: 132 MHz memory clock (low power setup) === | === Example 3: 132 MHz memory clock (low power setup) === | ||
- | The memory | + | The memory and the parallel (on-chip) input termination of the FPGA consumes |
- | memory frequency to 132 MHz and by disabling the parallel termination the power consumption can be drastically reduced. (The memory bandwidth of this setting is 528 MByte/s, more than enough for the most application.) | + | memory frequency to 132 MHz and by disabling the parallel termination the power consumption can be drastically reduced. (The memory bandwidth of this setting is 528 MByte/s.) |
- | For this setting the '' | + | For this setting the '' |
The parallel termination can be disabled by commenting out the following lines in the ucf file: | The parallel termination can be disabled by commenting out the following lines in the ucf file: | ||
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- | {{indexmenu_n> | + | {{indexmenu_n> |