HD6417616 RENESAS [Renesas Technology Corp], HD6417616 Datasheet - Page 286

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

Section 7 Bus State Controller (BSC)
7.2.2
Initialize BCR2 after a power-on reset and do not write to it thereafter. When writing to it, write
the same values as those the bits are initialized to. Do not access any space other than CS0 until
the register initialization ends.
The CS0 space bus size specification is set with pins MD4 and MD3. See section 3.3, CS0 Space
Bus Width of the CS0 Area, for details.
Bits 15 to 10—Reserved: These bits are always read as 0. The write value should always be 0.
Bits 9 and 8—Bus Size Specification for Area 4 (CS4) (A4SZ1, A4SZ0)
Bits 7 and 6—Bus Size Specification for Area 3 (CS3) (A3SZ1, A3SZ0). Effective only when
ordinary space is set.
Rev. 2.00 Mar 09, 2006 page 260 of 906
REJ09B0292-0200
Bit 9: A4SZ1
0
1
Bit 7: A3SZ1
0
1
Initial value:
Initial value:
Bus Control Register 2 (BCR2)
R/W:
R/W:
Bit:
Bit:
Bit 8: A4SZ0
0
1
0
1
Bit 6: A3SZ0
0
1
0
1
A3SZ1
R/W
15
—
R
0
7
1
A3SZ0
R/W
14
—
R
0
6
1
Description
Longword (32-bit) size
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
A2SZ1
R/W
13
—
R
0
5
1
A2SZ0
R/W
12
—
R
0
4
1
A1SZ1
R/W
11
—
R
0
3
1
A1SZ0
R/W
10
—
R
0
2
1
A4SZ1
R/W
—
R
9
0
1
0
(Initial value)
(Initial value)
A4SZ0
R/W
—
R
8
0
0
0