HD6417618 RENESAS [Renesas Technology Corp], HD6417618 Datasheet - Page 146

• Manufacturer Part Number: HD6417618
• Description: 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7618 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 7 Bus State Controller (BSC)
7.4.1
CMNCR is a 32-bit register that controls the common items for each area. Do not access external
memory other than area 0 until setting CMNCR is complete.
Rev. 6.00 Jun. 12, 2007 Page 114 of 610
REJ09B0131-0600
Bit
31 to 13
12
11 to 5
4
3
2
Common Control Register (CMNCR)
Bit Name

MAP


ENDIAN

Initial
Value
All 0
0
All 0
1
0/1*
1
R/W
R
R/W
R
R
R
R
Description
Reserved
These bits are always read as 0. The write value should
always be 0.
Space Specification
Selects the address map for the external address space.
The address maps to be selected are shown in tables 7.2
and 7.3.
0: Selects address map 1
1: Selects address map 2
Reserved
These bits are always read as 0. The write value should
always be 0.
Reserved
This bit is always read as 1. The write value should
always be 1.
Endian Flag
Fetches the external pin (MD5) state for specifying
endian at a power-on reset. The endian setting for all the
address spaces are set by this bit. This is a read-only bit.
0: External pin (MD5) for specifying endian was driven
1: External pin (MD5) for specifying endian was driven
Reserved
This bit is always read as 1. The write value should
always be 1.
low at a power-on reset. This LSI is operated as big
endian.
high at a power-on reset. This LSI is being operated as
little endian.