HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 269

• Manufacturer Part Number: HD6417660
• Description: Renesas 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

9.4.3
CSnWCR is a 32-bit register which specifies various wait cycles for memory accesses. The bit
configuration of this register varies as shown below according to the memory type specified by the
CSn space bus control register (CSnBCR). Specify CSnBCR register first, then specify the
CSnWCR register.
CSnWCR is initialized by a power-on reset, but not by a manual reset or in standby mode and
holds the previous value.
Normal Space, Byte-Selection SRAM:
• CS0WCR
Bit
31 to 13 
12
11
Bit Name
SW1
SW0
CSn Space Wait Control Register (CSnWCR) (n=0, 3, 4)
Initial
Value
All 0
0
0
R/W
R
R/W
R/W
Description
Reserved
These bits are always read as 0. The write value should
always be 0. Is 1 is written to these bits, correct operation
cannot be guaranteed.
Number of Delay Cycles from Address, CSn Assertion to
RD, WEn Assertion
Specify the number of delay cycles from address and CSn
assertion to RD and WEn assertion.
00: 0.5 cycles
01: 1.5 cycles
10: 2.5 cycles
11: 3.5 cycles
Rev. 1.00, 02/04, page 231 of 804