SH7763 Datasheet, PDF (1428/2026 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC Engine Family SH-4A Series

Section 32 PC Card Controller (PCC)
SH7763 memory
space
PC card address
space
General control
register bit settings
P0MMOD = 0
P0PA24 = x
H'18000000
Area 6
H'1A000000
Attribute memory/
common memory/
32 Mbytes
I/O space
32 Mbytes
P0REG
P0PA25
X: Don't cera
Attribute memory
32 Mbytes
Common memory
Total 64 Mbytes
I/O space
32Mbytes
P0PA25 = x
P0REG = 0 (attribute)
P0PA25 = 0
P0REG = 1 (common
memory)
P0PA25 = 0
P0REG = 1 (common
memory)
P0PA25 = x
P0REG = x
Pin PCCREG is always 0
Figure 32.2 Continuous 32-Mbyte Area Mode
Continuous 16-Mbyte Area Mode: Setting 1 in bit 3 (P0MMOD) of the general control register
enables the continuous 16-Mbyte area mode. In this mode, the attribute memory space and I/O
memory space are 16 Mbytes, and the common memory space is 64 Mbytes. In the common
memory space, set the PC card address in bit 2 (P0PA25) and bit 1 (P0PA24) of the general
control register to access an address of more than 16 Mbytes. By this operation, values are output
to A25 and A24 pins, enabling an address space of more than 16 Mbytes to be accessed (initial
value: 0 for P0PA25 and P0PA24). When an address of 16 Mbytes or less is accessed, no settings
are required. This bit does not affect access to attribute memory space or I/O memory space.
Figure 32.3 shows the relationship between the memory space of this LSI and the memory and I/O
spaces of the PC card in the continuous 16-Mbyte area mode. Although memory space and I/O
space are supported in area 6.
The attribute memory space, common memory space, and I/O space of the PC card are provided
as 16-Mbyte physical spaces in this mode. Therefore, this LSI automatically controls PCC_REG
pin (the value of bit 0 (P0REG) in the general control register is ignored). In area 6, the output of
PCC_REG pin is 0 when the attribute memory space or I/O space is accessed, and 1 when the
common memory space is accessed.
See the register descriptions in section 32.3, Register Descriptions for details of register settings.
Rev. 1.00 Oct. 01, 2007 Page 1362 of 1956
REJ09B0256-0100