R0K572011S000BE Renesas Electronics America, R0K572011S000BE Datasheet - Page 290

• Manufacturer Part Number: R0K572011S000BE
• Description: KIT STARTER FOR SH7201
• Manufacturer: Renesas Electronics America
• Series: Renesas Starter Kits (RSK)r
• Type: MCUr

Specifications of R0K572011S000BE

• Contents: CPU Board, LCD Display Module, E8 Emulator, Cable, QuickStart Guide and CD-ROM
• For Use With/related Products: SH7201
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Section 9 Bus State Controller (BSC)
Page 262 of 1190
Note : * Driving the DQM pin high before the initialization sequence is recommended
Reset
Specify all SDRAM control pins as port outputs with the PFC
setting of PORTC to output high level
Channel m settings
(1) Confirm that all status bits in SDSTR have been cleared to 0
(2) Make settings to SDmMOD mode register
(3) Set DRAS, DRCD, DPCG, DCL, and DWR bits in SDmTR
(4) Set DSZ bits in SDmADR
Enable access
SDRAMCm control register operation enable setting
Dummy-read SDRAM area of all channels to be used
Disable access
SDRAMCm control register operation disable setting
Specify SDRAM control pins (except DQM pin*) as SDRAM
with the PFC setting of PORTC
Initialization sequence
(1) Set DPC, DARFC, and DARFI bits in SDIR0
(2) Set DINIRQ bit in SDIR1 to 1
(3) Wait for DINIST bit in SDIR1 to be cleared to 0
Channel m settings
(1) Confirm that all status bits in SDSTR have been cleared to 0
(2) Make settings to SDmMOD mode register
(3) Set DRAS, DRCD, DPCG, DCL, and DWR bits in SDmTR
(4) Set DSZ bits in SDmADR
Start auto-refresh
Set DRFEN bit in SDRFCNT1 to 1
Specify DQM pin as DQM* with the PFC setting of PORTC
Enable access
SDRAMCm control register operation enable setting
SDRAM access enabled
for some SDRAM modules. In this case, the setting may be necessary.
Figure 9.26 SDRAMC Setting Procedure
Perform settings
for all channels
to be used
Perform settings
for all channels
to be used
R01UH0026EJ0300 Rev. 3.00
SH7201 Group
Sep 24, 2010