R0K572011S000BE Renesas Electronics America, R0K572011S000BE Datasheet - Page 238

• 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)
Notes: 1. When accessing SDRAM, there is no danger of data collision on the bus due to timing.
Page 210 of 1190
Bit
19 to 16 RRCV[3:0]
15 to 0
2. Writing to the CSn recovery cycle setting register (CSnREC) must be done while CSC
Bit Name
⎯
Consequently, there is no data recovery cycle setting for SDRAM. (The value is fixed at
0 cycles.)
for the corresponding channel is disabled (EXENB = 0). Only channel 0 (CS0) can be
enabled by setting EXENB = 1. To enable channel 0, stop the DMAC and set EXENB to
1 between the reset release and data write access to CS0.
Initial
Value
0000
All 0
R/W
R/W
R
Description
Post-Read Data Recovery Cycle Setting
These bits specify the number of data recovery cycles
to be inserted after read accesses to the external bus.
If a value other than 0 is selected, data recovery cycles
are inserted in the following cases:
If a read access to the external bus is followed by a
write access to the external bus. (Data recovery cycles
are inserted even when access is performed
sequentially to the same CSC channel.)
If a read access to the external bus is followed by a
read access to a different CSC channel. (No data
recovery cycles are inserted in cases of sequential
read accesses to the same CSC channel.)
Note that if idle cycles occur between accesses to the
external bus, the number of data recovery cycles
inserted is reduced by the number of idle cycles.
0000: 0 cycle
0001: 1 cycles
1111: 15 cycles
Reserved
These bits are always read as 0. The write value
should always be 0.
:
R01UH0026EJ0300 Rev. 3.00
SH7201 Group
Sep 24, 2010