20. Graphics Data Translation Accelerator (GDTA)
Rev.1.00 Jan. 10, 2008 Page 979 of 1658
REJ09B0261-0100
20.3.1 GA Mask Register (GACMR) GACMR is in the GDTA common register block and enables writing to the GA enable register (GACER). Writing to GACER is enabled by writing of the key code to this register. In the initial state, the key code is not written and writing to GACER is disabled.
161718192021222324252627282931 30
0000000000000000
GACM
R/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/W R/W
BIt:
Initial value:
R/W:
01234567891011121315 14
0000000000000000
GACM
R/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/WR/W R/W
BIt:
Initial value:
R/W:
Bit Bit Name
Initial
Value R/W Description
31 to 0 GACM 0 R/W Write the key code [H'A55A 0FF0] to enable writing to
GACER. If a value other than the key code is written,
writing to the GA enable register is disabled.