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Rev. 5.00, 09/03, page 232 of 760
Shadow Space: Areas 0 and 2–6 are decoded by physical addresses A28–A26, which correspond
to areas 000 to 110. Address bits 31–29 are ignored. This means that the range of area 0 addresses,
for example, is H'00000000 to H'03FFFFFF, and its corresponding shadow space is the address
space obtained by adding to it H'20000000 × n (n = 1–6). The address range for area 7, which is
on-chip I/O space, is H'1C000000 to H'1FFFFFFF. The address space H'1C000000 + H'20000000
× n–H'1FFFFFFF + H'20000000 × n (n = 0–7) corresponding to the area 7 shadow space is
reserved, and must not be used.
10.1.6 PCMCIA Support
The SH7709S supports PCMCIA standard interface specifications in physical space areas 5 and 6.
The interfaces supported are basically the “IC memory card interface” and “I/O card interface”
stipulated in JEIDA Specifications Ver. 4.2 (PCMCIA2.1).
Table 10.5 PCMCIA Interface Characteristics
Item Feature
Access Random access
Data bus 8/16 bits
Memory type Mask ROM, OTPROM, EPROM, EEPROM, flash memory, SRAM
Memory capacity Maximum 32 Mbytes
I/O space capacity Maximum 32 Mbytes
Other features Dynamic bus sizing of I/O bus width
*
The PCMCIA interface can be accessed from the address translation
area or non-address translation area.
Note: * Dynamic bus sizing of the I/O bus width is supported only in little-endian mode.
Common memory/Attribute memoryArea 5: H'14000000
Area 5: H'16000000
Common memory/Attribute memoryArea 6: H'18000000
I/O space
I/O space
A
rea 6: H'1A000000
Figure 10.4 PCMCIA Space Allocation