12. DDR2-SDRAM Interface (DBSC2)
Rev.1.00 Jan. 10, 2008 Page 484 of 1658
REJ09B0261-0100
12.4.3 SDRAM Command Control Register (DBCMDCNT) The SDRAM command control register (DBCMDCNT) is a readable/writable register. It is initialized only upon power-on reset. The CMD2 to CMD0 bits in DBCMDCNT are always read as 000.
161718192021222324252627282931 30
0000000000000000
⎯⎯
RRRRRRRRRRRRRRRR
BIt:
Initial value:
R/W:
01234567891011121315 14
0000000000000000
CMD0CMD1CMD2⎯⎯
R/WR/WR/WRRRRRRRRRRRRR
BIt:
Initial value:
R/W:
Bit Bit Name
Initial
Value R/W Description
31 to 3 All 0 R Reserved
These bits are always read as 0. The write value should
always be 0.
Operation when a value other than 0 is written is not
guaranteed.