M16C6K9_15 Datasheet, PDF (156/294 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER Description

M16C/6K9 Group
LPC Bus Interface
Data bus buffer status register
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
DBBSTS0
DBBSTS1
DBBSTS2
DBBSTS3
Address
02C116
02C316
02C516
02C716
Bit symbol
Bit name
OBF
Output buffer full flag
IBF
Input buffer full flag
U2
User definable flag
XA2
XA2 flag
U4
User definable flag
U5
U6
U7
When reset
000000002
000000002
000000002
000000002
Function
0 : Buffer empty
1 : Buffer full
RW
0 : Buffer empty
1 : Buffer full
This flag can be freely defined
by user
This flag is indication the A2
status of the 16 bit slave address
when IBF flag is set
This flag can be freely defined
by user
Fig.GF-4 Data bus buffer status register
Rev.1.00 Jun 06, 2003 page 154 of 290