M306V2 Mitsubishi, M306V2 Datasheet - Page 142

• Manufacturer Part Number: M306V2
• Description: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
• Manufacturer: Mitsubishi

142
Fig. 2.11.40 I
Fig. 2.11.41 Interrupt request signal generation timing
This bit is used for master/slave specification for data communication. When this bit is “0,” the slave is
specified, so that a START condition and a STOP condition generated by the master are received,
and data communication is performed in synchronization with the clock generated by the master.
When this bit is “1,” the master is specified and a START condition and a STOP condition are gener-
ated, and also the clocks required for data communication are generated on the SCL.
The MST bit is cleared to “0” in one of the following conditions.
Note: The START condition duplication prevention function disables the following: the START condi-
Bit 7: Communication mode specification bit (master/slave specification bit: MST)
• Immediately after completion of 1-byte data transmission when arbitration lost is detected
• When a STOP condition is detected.
• When occurence of a START condition is disabled by the START condition duplication preventing
• At reset
function (See note).
tion generation; bit counter reset, and SCL output with the generation. This bit is valid from
setting of BB flag to the completion of 1-byte transmittion/reception (occurrence of transmission/
reception interrupt request) <IICIRQ>.
I
2
b7 b6 b5 b4 b3 b2 b1 b0
2
Ci status register (i = 0, 1)
Ci status register (i = 0, 1)
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
Notes 1: These bits and flags can be read out, but cannot be written.
Bit Symbol
AAS
TRX
MST
I I C I R Q
LRB
AD0
PIN
BB
AL
2: This bit can be written only “1.”
S C L
P I N
Symbol
IIC0S1
IIC1S1
Last receive bit
General call detecting
flag (See note)
Slave address comparison
flag (See note)
Arbitration lost detecting
flag (See note)
I
interrupt request bit
Bus busy flag
Communication mode
specification bits
2
C-BUS interface i
Bit name
Address
02EA
02E2
16
16
0 : Last bit = “0”
1 : Last bit = “1”
0 : No general call detected
1 : General call detected
0 : Address mismatch
1 : Address match
0 : Not detected
1 : Detected
0 : Interrupt request issued
1 : No interrupt request issued (See note 2)
0 : Bus free
1 : Bus busy
b7b6
0 0 : Slave receive mode
0 1 : Slave transmit mode
1 0 : Master receive mode
1 1 : Master transmit mode
and ON-SCREEN DISPLAY CONTROLLER
When reset
0001000?
0001000?
MITSUBISHI MICROCOMPUTERS
Function
M306V2ME-XXXFP
2
2
(See note 1)
(See note 1)
(See note 1)
(See note 1)
(See note 1)
M306V2EEFP
R W
Rev. 1.0