HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 936

• Manufacturer Part Number: HD6417320
• Description: Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 26
Rev. 3.00 Jan. 18, 2008 Page 874 of 1458
REJ09B0033-0300
Bit
9
8
7 to 0
Bit Name
AU1
AU0

LCD Controller (LCDC)
Initial Value
0
0
All 0
R/W
R/W
R/W
R
Description
Access Unit Select
Select access unit of VRAM. This bit is enabled when
ROT = 1 (rotate the display). When ROT = 0, 16-burst
memory read operation is carried out whatever the
AU setting is.
00: 4-burst
01: 8-burst
10: 16-burst
11: 32-burst
Notes: 1. Above burst lengths are used for 32-bit
Reserved
These bits are always read as 0. The write value
should always be 0.
2. When displaying a rotated image, the
bus. For 16-bit bus, the burst lengths are
twice the lengths of 32-bit bus.
burst length is limited depending on the
number of column address bits and bus
width of connected SDRAM. For details,
see tables 26.3 and 26.4.