r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 1030

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

20. Graphics Data Translation Accelerator (GDTA)
20.3.21 MC Command FIFO (MCCF)
MCCF is in the MC register block and receives commands. This register uses the FIFO method
and recognizes a maximum of eight command parameters according to the writing order. This
register does not retain the written values. This register is always read as 0.
Setting Method: When accessing this register, the MC_EN bit in GACER should be set to 1.
Access is possible only when the MC_EN bit is set to 1. If the MC_EN bit is 0, access is invalid
(writing is invalid; the read value is indefinite).
The following shows the setting contents assumed according to the writing order:
Rev.1.00 Jan. 10, 2008 Page 1000 of 1658
REJ09B0261-0100
Initial value:
Initial value:
Bit
31 to 0
R/W:
R/W:
BIt:
BIt:
Bit Name
MC_CF
31
15
W
W
0
0
30
14
W
W
0
0
29
13
W
W
0
0
Initial
Value
0
28
12
W
W
0
0
R/W
W
27
11
W
W
0
0
26
10
W
W
0
0
Description
Command FIFO Register
25
W
W
0
9
0
24
W
W
0
8
0
MC_CF
MC_CF
23
W
W
0
7
0
22
W
W
0
6
0
21
W
W
0
5
0
20
W
W
0
4
0
19
W
W
0
3
0
18
W
W
0
2
0
17
W
W
0
1
0
16
W
W
0
0
0