HD6417616 RENESAS [Renesas Technology Corp], HD6417616 Datasheet - Page 287

• Manufacturer Part Number: HD6417616
• Description: 32-Bit RISC Microcomputer SuperH™ RISC engine Family/SH7600 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Bits 5 and 4—Bus Size Specification for Area 2 (CS2) (A2SZ1, A2SZ0): Effective only when
ordinary space is set.
Bits 3 and 2—Bus Size Specification for Area 1 (CS1) (A1SZ1, A1SZ0)
Bits 1 and 0—Reserved: These bits are always read as 0. The write value should always be 0.
7.2.3
Initialize the BASEL, EDO, and BWE bits after a power-on reset and do not write to them
thereafter. To change other bits by writing to them, write the same value as they are initialized to.
Do not access any space other than CS0 until the register initialization ends.
Bits 15 to 12—Reserved bits: These bits are always read as 0. The write value should always be 0.
Bit 5: A2SZ1
0
1
Bit 3: A1SZ1
0
1
Initial value:
Initial value:
Bus Control Register 3 (BCR3)
R/W:
R/W:
Bit:
Bit:
Bit 4: A2SZ0
0
1
0
1
Bit 2: A1SZ0
0
1
0
1
DSWW1 DSWW0
R/W
15
—
R
0
7
0
R/W
14
—
R
0
6
0
Description
Reserved (do not set)
Byte (8-bit) size
Word (16-bit) size
Longword (32-bit) size
Description
Reserved (do not set)
Byte (8-bit) size
Word (16-bit) size
Longword (32-bit) size
13
—
—
R
R
0
5
0
12
—
—
R
R
0
4
0
Rev. 2.00 Mar 09, 2006 page 261 of 906
Section 7 Bus State Controller (BSC)
A4LW2 AHLW2 A1LW2
R/W
11
—
R
1
3
0
BASEL
R/W
R/W
10
1
2
0
REJ09B0292-0200
EDO
R/W
R/W
9
1
1
0
(Initial value)
(Initial value)
A0LW2
BWE
R/W
R/W
8
1
0
0