SH7721 datasheet(1029/1524 Pages) RENESAS

1029 / 1524 page

Section 29

PC Card Controller (PCC)

Rev. 3.00 Jan. 18, 2008 Page 967 of 1458

REJ09B0033-0300

Bit

Bit Name

Initial Value R/W

Description

P0USE

R/W

PCC0 Use/Not Use

Specifies that the PC Card Controller to be worked or

not worked.

0: PC Card Controller doesn't work

1: PC Card Controller works

Note:

When setting P0USE to 1, following settings are

required.

When P0USE is set to 1 and P0PCCT is set to

0, bits 21 and 20 (SA1 and SA0) in the

CS6BWCR register of BSC should be set to 0.

When P0USE and P0PCCT are set to 1, bits 21

and 20 (SA1 and SA0) in the CS6BWCR

Before P0USE is set to 1, bits 15 to 12 (TYPE3

to TYPE0) in CS6BBCR of BSC should be set to

0101.

P0MMOD

R/W

PCC0 Mode

Controls

PCC_REG and A24 pins for the PC card

connected to area 6. Specifies either A24 of the

address to be accessed or bit P0REG for outputting to

PCC_REG pin. When the common memory space is

accessed, specifies either A24 of the address to be

accessed or bit P0PA24 for outputting to A24 pin. By

this operation, continuous 32 or 16 Mbytes can be

selected for the address area of the common memory

space of the PC card.

0: Bit P0REG is output to

PCC_REG pin, and A24 of

address to be accessed is output to A24 pin

(continuous 32-Mbyte area mode)

1: A24 of address to be accessed is output to

PCC_REG pin. When the common memory space is

accessed, P0PA24 is output to A24 pin (continuous

16-Mbyte area mode)

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