MITSUBISHI MICROCOMPUTERS
M37274EFSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
2
I C Address Register
b7 b6 b5 b4 b3 b2 b1 b0
I2C address register (S0D) [Address 00F716]
B
Name Functions
After reset R W
0: Read
1: Write
0
Read/write bit
(RBW)
0
R —
1
to
7
The address data transmitted from
the master is compared with the
contents of these bits.
Slave address
(SAD0 to SAD6)
0
R W
2
I C Address Register
Address 00F716
2
I C Status Register
b7 b6 b5 b4 b3 b2 b1 b0
I2C status register (S1) [Address 00F816
]
B
Name
Functions
After reset R W
0
Indeterminate
Last receive bit (LRB)
(See note)
0 : Last bit = “0 ”
1 : Last bit = “1 ”
R —
1
2
General call detecting flag
(AD0) (See note)
0 : No general call detected
1 : General call detected
0
R —
Slave address comparison
flag (AAS) (See note)
0 : Address mismatch
1 : Address match
0
R —
3
4
5
Arbitration lost detecting flag 0 : Not detected
0
R —
(AL) (See note)
1 : Detected
I2C-BUS interface interrupt
request bit (PIN)
0 : Interrupt request issued
1 : No interrupt request issued
0
R —
Bus busy flag (BB)
0 : Bus free
1 : Bus busy
0
R W
6, 7 Communication mode
specification bits
b7 b6
0
R W
0
0 : Slave recieve mode
(TRX, MST)
0
1
1
1 : Slave transmit mode
0 : Master recieve mode
1 : Master transmit mode
Note : These bits and flags can be read out, but cannnot be written.
2
I C Status Register
Address 00F816
132
RENESAS [ RENESAS TECHNOLOGY CORP ]
