HD6437101 RENESAS [Renesas Technology Corp], HD6437101 Datasheet - Page 136

• Manufacturer Part Number: HD6437101
• Description: 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 7 Bus State Controller (BSC)
On-Chip ROM Disabled Mode (for SH7109 only)
Note:
7.5
7.5.1
BCR1 is a 16-bit readable/writable register that enables access to the MMT and MTU control
registers and specifies the bus size of the CS0 space.
The AOSZ bit of BCR1 is written to during the initialization stage after a power-on reset. Do not
change the values thereafter. In on-chip ROM enabled mode, do not access any of the CS0 space
until completion of register initialization.
Rev.1.00 Sep. 18, 2008 Page 102 of 522
REJ09B0069-0100
Address
H'0000 0000 to H'0000 7FFF
H'0000 8000 to H'0000 FFFF
H'0001 0000 to H'0001 FFFF
H'0002 0000 to H'0002 FFFF
H'0003 0000 to H'0003 FFFF
H'0004 0000 to H'001F FFFF
H'0020 0000 to H'0023 FFFF
H'0024 0000 to H'FFFF 7FFF
H'FFFF 8000 to H'FFFF BFFF On-chip
H'FFFF C000 to H'FFFF CFFF Reserved Reserved Reserved Reserved Reserved
H'FFFF D000 to H'FFFF DFFF
H'FFFF E000 to H'FFFF EFFF
H'FFFF F000 to H'FFFF 7FFF
H'FFFF F800 to H'FFFF FFFF
* Do not access reserved spaces. Operation cannot be guaranteed if they are accessed.
Register Descriptions
Bus Control Register 1 (BCR1)
When in single chip mode, spaces other than those for on-chip ROM, on-chip RAM, and
internal peripheral module are not available.
Space*
CS0
space
Reserved Reserved Reserved Reserved Reserved
Reserved Reserved Reserved Reserved Reserved
Reserved Reserved Reserved Reserved Reserved
peripheral
module
On-chip
RAM
Memory
External
space
On-chip
peripheral
module
On-chip
RAM
SH7105
256
kbytes
16 kbytes 16 kbytes 16 kbytes 8, 16 bits
Reserved
8 kbytes
SH7109
256
kbytes
Reserved Reserved
4 kbytes
Size
SH7107
256
kbytes
4 kbytes
Bus
Width
8 bits
32 bits