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Under
development
Preliminary Specifications REV.B3
Specifications in this manual are tentative and subject to change.
Mitsubishi Microcomputers
M32C/83 group
SINGLE-CHIP 16/32-BIT CMOS MICROCOMPUTER
Intelligent I/O (Serial I/O)
268
Figure 1. 23. 29. Group 0 and 1 related register (4)
Group i special communication interrupt detect register (i=0,1) (Note)
Symbol
Address
When reset
GiIRF (i=0,1)
00FE16, 013E16
0000 00XX2
RW
Bit name
Function
Bit
symbol
Note : Other than when in the special communication mode or HDLC data processing mode, either
use the reset state as is or write "0016".
Nothing is assigned. When write, set "0".
When read, their contents are indeterminate.
b7
b0
ABT
BSERR
Arbitration lost
detecting flag
Bit stuffing error
detecting flag
0 : Not detected
1 : Detected
0 : Not detected
1 : Detected
IRF0
IRF1
IRF2
Interrupt cause
determination
flag 0
IRF3
0 : Received data does not match data
compare register 0
1 : Received data matches data compare register 0
Interrupt cause
determination
flag 1
Interrupt cause
determination
flag 2
Interrupt cause
determination
flag 3
0 : Received data does not match data
compare register 1
1 : Received data matches data compare register 1
0 : Received data does not match data
compare register 2
1 : Received data matches data compare register 2
0 : Received data does not match data
compare register 3
1 : Received data matches data compare register 3
Group i SI/O expansion receive control register (i=0,1) (Note 1)
Symbol
Address
When reset
GiERC (i=0,1)
00FD16, 013D16
0016
RW
Bit name
Function
Bit
symbol
Note 1: Other than when in the special communication mode or HDLC data processing mode, either
use the reset state as is or write "0016".
Note 2: To use the CRC initialization function (when bit 2 of SI/O expansion mode register is set to "1"),
set bit 3 to "1".
b7
b0
CMP0E
CMP1E
CMP2E
Data compare
function 0
select bit
CMP3E
RCRCE
RSHTE
RBSF0
RBSF1
Receive CRC
enable bit
Receive shift
operation
enable bit
0 : Not enable
1 : Enable
0 : Receive shift operation disabled
1 : Receive shift operation enabled
0 : Does not compare the received data with
data compare register 0
1 : Compare the received data with data compare register 0
Data compare
function 1
select bit
Data compare
function 2
select bit
Data compare
function 3
select bit
Receive bit
stuffing "1" delete
select bit
Receive bit
stuffing "1" delete
select bit
0 : "1" is not deleted
1 : "1" is deleted
0 : "0" is not deleted
1 : "0" is deleted
0 : Does not compare the received data with
data compare register 1
1 : Compare the received data with data compare register 1
0 : Does not compare the received data with
data compare register 2
1 : Compare the received data with data compare register 2
0 : Does not compare the received data with
data compare register 3
1 : Compare the received data with data compare register 3
(Note 2)