Adi_Ebiu_Sdram_Ebufe; Visualdsp++ 5.0 Device Drivers And System; Adi_Ebiu_Sdram_Pupsd - Analog Devices VisualDSP++ 5.0 Service Manual

Setting Control Values in the EBIU Module
For example, SDRAM self-refresh is enabled when the processor mode is
put into "deep sleep" via the power management module.
mation, see "Power Management Module" on page 3-1.
ADI_EBIU_SDRAM_SRFS_DISABLE
ADI_EBIU_SDRAM_SRFS_ENABLE
The default value is specified by the following macro:
#define ADI_EBIU_SDRAM_SRFS_DEFAULT
ADI_EBIU_SDRAM_SRFS_DISABLE

ADI_EBIU_SDRAM_EBUFE

This enumeration specifies whether the EBIU uses external buffers when
several SDRAM devices are used in parallel. This enumeration corre-
sponds to the
EBUFE
ADI_EBIU_SDRAM_EBUFE_DISABLE
ADI_EBIU_SDRAM_EBUFE_ENABLE
The default value is specified by the following macro:
#define ADI_EBIU_SDRAM_EBUFE_DEFAULT
ADI_EBIU_SDRAM_EBUFE_DISABLE

ADI_EBIU_SDRAM_PUPSD

This enumeration specifies whether the power-up start sequence is delayed
by 15 cycles. This enumeration corresponds to the
SCLK
register.
EBIU_SDGCTL
ADI_EBIU_SDRAM_PUPSD_NODELAY
ADI_EBIU_SDRAM_PUPSD_15CYCLES
4-42
Disables SDRAM self-refresh on inactivity.
Enables SDRAM self-refresh on inactivity.
bit in the
EBIU_SDGCTL
Disables the use of external buffers when several
SDRAM devices are used in parallel.
Enables the use of external buffers when several
SDRAM devices are used in parallel.
No delay to the power-up start sequence.
Power-up start sequence is delayed by 15

VisualDSP++ 5.0 Device Drivers and System

Services Manual for Blackfin Processors
For more infor-
register.
PUPSD
bit in the
cycles.
SCLK