HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 1023

• Manufacturer Part Number: HD6417320
• Description: Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

(2)
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 each address of 16
Mbytes unit. 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). 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.
Figures 29.3 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. 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 29.3, Register Descriptions for details of register settings.
H'18000000
H'1A000000
Continuous 16-Mbyte Area Mode
Area 6
Figure 29.3
Common memory
Attribute memory
This LSI memory
I/O space
space
16
16
16
Mbytes
Mbytes
Mbytes
Continuous 16-Mbyte Area Mode (Area 6)
Not
used
P0PA25
P0PA24
Attribute memory 16
(Pin PCCREG is alwys 0)
(Pin PCCREG is always 1)
(Pin PCCREG is alwys 0)
I/O space 16
PC card address
Common mermoy
Rev. 3.00 Jan. 18, 2008 Page 961 of 1458
Total 64
space
Section 29
Mbytes
Mbytes
Mbytes
P0PA25 = x, P0PA24 = x
P0PA25 = 0, P0PA24 = 0
P0PA25 = 0, P0PA24 = 1
P0PA25 = 1, P0PA24 = 0
P0PA25 = 1, P0PA24 = 1
P0PA25 = x, P0PA24 = x
General control
register bit settings
P0MMOD = 1
P0REG = x
PC Card Controller (PCC)
REJ09B0033-0300
x: Don't care