HD6417641 RENESAS [Renesas Technology Corp], HD6417641 Datasheet - Page 357

• Manufacturer Part Number: HD6417641
• Manufacturer: RENESAS [Renesas Technology Corp]

• CS3WCR
Bit
31 to 15
14
13
12
11
10
Bit Name

WTRP1*
WTRP0

WTRCD1
WTRCD0
Initial
Value
All 0
0
0
0
0
1
R/W
R
R/W
R/W
R
R/W
R/W
Description
Reserved
These bits are always read as 0. The write value
should always be 0.
Number of Auto-Precharge Completion Wait Cycles
Specify the number of minimum precharge completion
wait cycles during the periods shown below.
•
•
•
•
•
The setting for areas 2 and 3 is common.
00: No cycle
01: 1 cycle
10: 2 cycles
11: 3 cycles
Reserved
This bit is always read as 0. The write value should
always be 0.
Number of Wait Cycles between ACTV Command and
READ(A)/WRIT(A) Command
Specify the minimum number of wait cycles from
issuing the ACTV command to issuing the
READ(A)/WRIT(A) command. The setting for areas 2
and 3 is common.
00: No cycle
01: 1 cycle
10: 2 cycles
11: 3 cycles
From the start of auto-precharge to issuing of the
ACTV command for the same bank
From issuing of the PRE/PALL command to issuing
of the ACTV command for the same bank
Until entering the power-down mode or deep
power-down mode
From issuing of the PALL command to issuing of
the REF command in auto refreshing
From issuing of the PALL command to issuing of
the SELF command in self refreshing
Rev. 4.00 Sep. 14, 2005 Page 307 of 982
Section 12 Bus State Controller (BSC)
REJ09B0023-0400