SH7606 Datasheet, PDF (213/532 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperH™ RISC engine Family / SH7606 Series

Section 7 Bus State Controller (BSC)
When 32 Mbytes of the memory space are used as an IC memory card interface, a port is used to
generate the REG signal that switches between the common memory and attribute memory. When
the memory space used for the IC memory card interface is 16 Mbytes or less, pin A24 can be
used as the REG signal by allocating a 16-Mbyte common memory space and a 16-Mbyte attribute
memory space alternatively.
PCMCIA interface area is 32 Mbytes (An I/O port pin is used as the REG)
Area 5 : H'14000000
Area 5 : H'16000000
Area 6 : H'18000000
Area 6 : H'1A000000
Attribute memory/common memory
I/O space
Attribute memory/common memory
I/O space
PCMCIA interface area is 16 Mbytes (A24 is used as the REG)
Area 5 : H'14000000
Area 5 : H'15000000
Area 5 : H'16000000
H'17000000
Area 6 : H'18000000
Area 6 : H'19000000
Area 6 : H'1A000000
H'1B000000
Attribute memory
Common memory
I/O space
Attribute memory
Common memory
I/O space
Figure 7.33 Example of PCMCIA Space Assignment (CS5BWCR.SA[1:0] = B'10,
CS6BWCR.SA[1:0] = B'10)
Basic Timing for I/O Card Interface: Figures 7.34 and 7.35 show the basic timings for the
PCMCIA I/O card interface.
The I/O card and IC memory card interfaces are specified by an address to be accessed. When
area 5 of the physical space is specified as the PCMCIA and both bits SA1 and SA0 in CS5BWCR
are set to 1, the I/O card interface can automatically be specified by accessing the physical
addresses from H'16000000 to H'17FFFFFF and from H'14000000 to H'15FFFFFF. When area 6
of the physical space is specified as the PCMCIA and both bits SA1 and SA0 in CS6BWCR are
set to 1, the I/O card interface can automatically be specified by accessing the physical addresses
from H'1A000000 to H'1BFFFFFF and from H'18000000 to H'19FFFFFF.
Note that areas to be accessed as the PCMCIA I/O card must be non-cached (space P2).
Rev. 4.00 Sep. 13, 2007 Page 187 of 502
REJ09B0239-0400