Subversion Repositories mips_enhanced

SDRAM controller enable

CONFIG_SDCTRL

  Say Y here to enabled a 32/64-bit PC133 SDRAM controller.

SDRAM controller inverted clock

CONFIG_SDCTRL_INVCLK

  If you say Y here, the SDRAM clock will be inverted in respect to the

  system clock and the SDRAM signals. This will limit the SDRAM frequency

  to 50/66 MHz, but has the benefit that you will not need a PLL to

  generate the SDRAM clock. On FPGA targets, say Y. On ASIC targets,

  say N and tell your foundry to balance the SDRAM clock output.

64-bit data bus

CONFIG_SDCTRL_BUS64

  Say Y here to enable 64-bit data bus.

Page burst enable

CONFIG_SDCTRL_PAGE

  Say Y here to enable SDRAM page burst operation. This will implement

  read operations using page bursts rather than 8-word bursts and save

  about 500 gates (100 LUTs). Note that not all SDRAM supports page

  burst, so use this option with care.

Programmable page burst enable

CONFIG_SDCTRL_PROGPAGE

  Say Y here to enable programmable SDRAM page burst operation. This

  will allow to dynamically enable/disable page burst by setting

  bit 17 in MCFG2.