SH7727 Datasheet, PDF(971/1109 Page) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7700 Series

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SH7727 Datasheet, PDF (971/1109 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7700 Series

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Section 30 PC Card Controller (PCC)

Bit 1âPCC0 Battery Warning (P0BW): Indicates whether the BVD2 and BVD1 pins of the PC

card are in the state in which âthe battery must be changed although the data is guaranteedâ when

the PC card connected to area 6 is on the IC memory card interface. When the BVD2 and BVD1

pins are 0 and 1, respectively, the P0BW bit is set to 1; in other cases, the P0BW bit remains at 0.

This bit is updated when the BVD2 and BVD1 pins are changed. Write 0 to bit 1 in order to clear

this bit to 0. This bit is not changed if 1 is written. This bit always reads 0 on the I/O card

interface.

Bit 1: P0BW

0

1

Description

BVD2 and BVD1 of the PC card are not in the battery warning state when

the PC card is in the IC memory card interface

(Initial value)

BVD2 and BVD1 of the PC card are in the battery warning state and âthe

battery must be changed although the data is guaranteedâ when the PC

card is on the IC memory card interface

Bit 0âPCC0 Battery Dead (P0BD): Indicates whether the BVD2 and BVD1 pins of the PC card

are in the state in which âthe battery must be changed since the data is not guaranteedâ when the

PC card connected to area 6 is on the IC memory card interface. When the BVD2 and BVD1 pins

are 1 and 0 or 0 and 0, the P0BD bit is set to 1; in other cases, the P0BD bit remains at 0. This bit

is updated when the BVD2 and BVD1 pins are changed. Write 0 to bit 0 in order to clear this bit

to 0. This bit is not changed if 1 is written. This bit always reads 0 on the I/O card interface.

Bit 0: P0BD

0

1

Description

BVD2 and BVD1 of the PC card are not in the state in which âthe battery

must be changed since the data is not guaranteedâ when the PC card is on

the IC memory card interface

(Initial value)

BVD2 and BVD1 of the PC card are in the state in which âthe battery must

be changed since the data is not guaranteedâ when the PC card is on the IC

memory card interface

Rev. 5.00 Dec 12, 2005 page 899 of 1034

REJ09B0254-0500

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