M3882 datasheet(32/62 Pages) RENESAS

32 / 62 page

Rev.1.01

Nov 14, 2005

page 32 of 60

REJ03B0089-0101

3882 Group

Fig. 26 Data bus buffer control register

Fig. 25 LPC control register

Data bus buffer status register i (i = 0, 1)

Bit name

Function

Bit symbol

OBFi

Output buffer full flag

0 : Buffer empty

1 : Buffer full

0 : Buffer empty

1 : Buffer full

This flag indicates the A2

status when IBFi flag is set.

Input buffer full flag

User definable flag

XA2i flag

IBFi

U2i

XA2i

U4i

U5i

U6i

U7i

User definable flag

This flag can be freely defined

by user.

This flag can be freely defined

by user.

Symbol

Address

When reset

DBBSTS0

002916

000000002

DBBSTS1

002C16

000000002

LPC control register

Bit name

Function

Bit symbol

SYNCSEL

SYNC output select bit

00:OK

01:Long & OK

10:Err

11:Long & Err

0 : Reset release(automatic)

1 : Reset

LPC interface software reset bit

LPCSR

Cannot write to this bit.

Returns "0"when read.

Symbol

Address

When reset

LPCCON

002A16

000000002

0 : P80 to P86 as port

1 : LPC interface enable

LPC interface enable bit

LPCEN

0 : Data bus buffer 0 disable

1 : Data bus buffer 0 enable

Data bus buffer 0 enable bit

DBBEN0

0 : Data bus buffer 1 disable

1 : Data bus buffer 1 enable

Data bus buffer 1 enable bit

DBBEN1

M3882 Datasheet(PDF) 32 Page - Renesas Technology Corp

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