r5s72060w200fpv Renesas Electronics Corporation., r5s72060w200fpv Datasheet - Page 280

• Manufacturer Part Number: r5s72060w200fpv
• Description: 32-bit Risc Microcomputer Superhtm Risc Engine Family / Sh7200 Series
• Manufacturer: Renesas Electronics Corporation.

Section 8 Bus State Controller (BSC)
Rev. 2.00 Dec. 09, 2005 Page 256 of 1152
REJ09B0191-0200
Bit
11
10
9
Bit Name
RFSH
RMODE
PDOWN
Initial
Value
0
0
0
R/W
R/W
R/W
R
Description
Refresh Control
Specifies whether or not the refresh operation of the
SDRAM is performed.
0: No refresh
1: Refresh
Refresh Control
Specifies whether to perform auto-refresh or self-
refresh when the RFSH bit is 1. When the RFSH bit is
1 and this bit is 1, self-refresh starts immediately.
When the RFSH bit is 1 and this bit is 0, auto-refresh
starts according to the contents that are set in
registers RTCSR, RTCNT, and RTCOR.
0: Auto-refresh is performed
1: Self-refresh is performed
Power-Down Mode
Specifies whether the SDRAM will enter the power-
down mode after the access to the SDRAM. With this
bit being set to 1, after the SDRAM is accessed, the
CKE signal is driven low and the SDRAM enters the
power-down mode.
0: The SDRAM does not enter the power-down mode
1: The SDRAM enters the power-down mode after
after being accessed.
being accessed.